A randomised controlled trial of acceptance and commitment therapy and cognitive-behaviour therapy for generalised anxiety disorder
Open accessAbstract
The study examined the relative efficacy of group acceptance and commitment therapy (ACT) for generalised anxiety disorder (GAD) compared to group cognitive-behavioural therapy (CBT). Fifty-one individuals with GAD were randomly allocated to a 6-week intervention, either ACT or CBT. Participants were assessed at pre-treatment, post-treatment, and 3-month follow-up on symptom measures, quality of life, and process measures. Data from 38 participants (19 in each group) were available at post-assessment, indicating significant improvements on all measures for both treatment conditions. Treatment gains were maintained at follow-up, with significant further improvements in anxiety, depression and stress symptoms for both groups. While no between-group differences were found at treatment completion, a significant interaction indicating steeper reduction in worrying symptoms (d =.79) from pre- to post-assessment was found for the ACT group compared to the CBT group. Furthermore, in relation to worrying, at treatment completion 78.9% of participants in the ACT group achieved reliable change compared to 47.4% of participants in the CBT group. However, both groups showed equivalent reliable change rates of 60% at the follow-up assessment. The results suggest that group ACT was as efficacious as group CBT. While participants in the ACT group maintained treatment gains at follow-up, participants in the CBT group continued to improve between post-assessment and follow-up. © The Author(s), published by Cambridge.
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9 of 49 cited sources checked · 8 supported · 0 flagged · accuracy not yet measured
- Premisecitation
Application of ACT to mixed anxiety disorders (including GAD) led to improvements comparable to CBT.
“Research has demonstrated that the application of ACT to mixedanxiety disorders (including GAD) led to improvements that were comparable to CBT (e.g., Arch et al., 2012).”
Quote in the paperSubstantial claim1 of 1 sources checked- cites Arch et al., 2012 source
- Premisecitation
Apart from a pilot study investigating ACT and CBT for GAD in older individuals, there are no published, randomised controlled trials of ACT and CBT focusing exclusively on GAD.
“Currently, apart from a pilot study investigating ACT and CBT for GAD in older individuals (Wetherell et al., 2011), there are no published, randomised controlled trials of ACT and CBT focusing exclusively on GAD.”
Quote in the paperSubstantial claim1 of 1 sources checked- cites Wetherell et al., 2011 source
- Interpretationcitation
The current results are comparable to other randomised controlled trials of ACT and CBT, such as Forman et al. (2007) and Arch et al. (2012).
“These results are comparable to other randomised controlled trials of ACT and CBT, such as Forman, Herbert, Moitra, Yeomans, and Geller (2007) and Arch et al. (2012).”
Quote in the paperNot a substantial claim1 of 2 sources checked - Premisecitation
Forman et al. (2007) and Arch et al. (2012) found that ACT and CT/CBT interventions achieved similar improvements at treatment completion on either anxiety-specific measures or broader outcomes such as quality of life.
“Both of these studies found that ACT and CT/CBT interventions achieved similar improvements at treatment completion on either anxiety specific measures or broader outcomes (e.g., quality of life).”
Quote in the paperSubstantial claim1 of 2 sources checked - Findingown data
At treatment completion, 78.9% of participants in the ACT group achieved reliable change on worrying compared to 47.4% in the CBT group.
“at treatment completion 78.9% of participants in the ACT group achieved reliable change compared to 47.4% of participants in the CBT group.”
Quote in the paperNot a substantial claim
- Findingown data
Treatment gains were maintained at follow-up for both groups.
“Treatment gains were maintained at follow-up”
Quote in the paperSubstantial claim - Findingown data
There was a significant interaction indicating steeper reduction in worrying symptoms (d = .79) from pre- to post-assessment for the ACT group compared to the CBT group.
“a significant interaction indicating steeper reduction in worrying symptoms (d = .79)from pre-to post-assessment was found for the ACT group compared to the CBT group.”
Quote in the paperNot a substantial claim - Findingown data
Both groups showed equivalent reliable change rates of 60% at the follow-up assessment.
“both groups showed equivalent reliable change rates of 60% at the follow-up assessment.”
Quote in the paperSubstantial claim - Findingown data
Both treatment conditions showed significant improvements on all measures from pre- to post-assessment.
“indicating significant improvements on all measures for both treatment conditions.”
Quote in the paperSubstantial claim - Findingown data
Participants in the ACT group maintained treatment gains at follow-up.
“While participants in the ACT group maintained treatment gains at follow-up”
Quote in the paperNot a substantial claim - Findingown data
No between-group differences were found at treatment completion.
“While no between-group differences were found at treatment completion”
Quote in the paperSubstantial claim - Findingown data
Participants in the CBT group continued to improve between post-assessment and follow-up.
“participants in the CBT group continued to improve between post-assessment and follow-up.”
Quote in the paperNot a substantial claim - Findingown data
Both groups showed significant further improvements in anxiety, depression and stress symptoms at follow-up.
“with significant further improvements in anxiety, depression and stress symptoms for both groups.”
Quote in the paperNot a substantial claim - Findingown data
In the ITT analysis for the WW-II total, there was a significant main effect of time (F(1,49)=22.57, p<.001, partial η2=.320), with participants across groups reporting reduced beliefs in positive benefits of worrying from pre- to post-assessment.
“The results of the ITT analysis for the WW-II total showed the main effect of time, F(1, 49) = 22.57, p < .001,partial η 2 = .320,with participants across the groups reporting reduced beliefs in positive benefits of worrying from pre-to postassessment.”
Quote in the paperNot a substantial claim - Findingown data
For the PSWQ, a significant interaction was found between group and time, F(1, 36) = 4.95, p = .032, partial η2 = .121.
“Furthermore, a significant interaction was found between the group and time, F(1, 36) = 4.95, p = .032,partial η 2 = .121.”
Quote in the paperNot a substantial claim - Findingown data
Participants in both groups reported a significant reduction in their worrying symptoms from pre- to post-assessment.
“Furthermore, participants in both groups reported a significant reduction in their worrying symptoms from pre-to post-assessment.”
Quote in the paperNot a substantial claim - Findingown data
There was no main effect of group for the CAQ (F(1,35)=.035, p=.852, partial η2=.001).
“and no main effect of group, F(1, 35) = .035,p = .852,partial η 2 = .001.”
Quote in the paperNot a substantial claim - Findingown data
For the AAQ action subscale, there was a significant increase in acceptance of unwanted experiences from pre- to post-assessment across both groups (F(1,36)=30.63, p<.001, partial η2=.460).
“action subscale, F(1, 36) = 30.63,p < .001,partial η 2 = .460”
Quote in the paperNot a substantial claim - Findingown data
Ratings of distress and interference (ITT): significant main effect of time on distress ratings, F(2,98) = 24.96, p = .000, partial η2 = .337, indicating participants' levels of distress lowered over the course of treatment across both groups.
“The results of a 3 × 2 mixed factorial ANOVA revealed a significant main effect of time on distress ratings, F(2,98) = 24.96,p = .000,partial η 2 = .337,indicating that participants' levels of distress lowered over the course of treatment across both groups.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
Each treatment condition demonstrated significant improvements on all measures from pre- to post-assessment.
“The results suggested that each treatment condition demonstrated significant improvements on all measures from pre-to post-assessment.”
Quote in the paperSubstantial claim - Findingown data
In the ITT analysis for the AAQ-9, there was a significant main effect of time (F(1,48)=45.79, p<.001, partial η2=.488), with greater experiential acceptance across both treatment interventions from pre- to post-treatment.
“The mixed factorial analysis for the AAQ-9 using the ITT data showed the main effect of time, F(1, 48) = 45.79,p < .001,partial η 2 = .488,with greater experiential acceptance across both treatment interventions from pre-to post-treatment.”
Quote in the paperNot a substantial claim - Findingown data
Further significant improvements were found in stress from post- to 3-month follow-up across both groups (F(1,28)=47.26, p<.001, partial η2=.628).
“and stress symptoms, F(1, 28) = 47.26,p < .001,partial η 2 = .628,across both groups.”
Quote in the paperSubstantial claim - Findingown data
At post-assessment, 78.9% of participants in the ACT group reached reliable change on worrying (RCI > 1.96) compared to 47.4% in the CBT group.
“In relation to worrying, at post-assessment 78.9% of participants from the ACT group reached reliable change (RCI > 1.96) compared to 47.4% of participants in the CBT group.”
Quote in the paperSubstantial claim - Findingown data
Ratings of interference: no main effect of group, F(1, 49) = 2.85, p = .098, partial η2 = .055.
“There was no main effect of group, F(1, 49) = 2.85, p = .098,partial η 2 = .055.”
Quote in the paperNot a substantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
There was no significant time × group interaction for the AAQ action subscale (F(1,36)=3.80, p=.059, partial η2=.095).
“action subscale, F(1, 36) = 3.80, p = .059,partial η 2 = .095”
Quote in the paperNot a substantial claim - Findingown data
There was no significant time × group interaction for the WW-II total (F(1,36)=3.14, p=.085, partial η2=.080).
“There was no significant time × group interaction, F(1, 36) = 3.14, p = .085,partial η 2 = .080”
Quote in the paperNot a substantial claim - Findingown data
There was no significant time × group interaction for the CAQ (F(1,35)=.882, p=.354, partial η2=.025).
“There was no significant time × group interaction, F(1, 35) = .882,p = .354,partial η 2 = .025”
Quote in the paperSubstantial claim - Findingown data
There was no significant time × group interaction for the AAQ-9 (F(1,36)=3.85, p=.057, partial η2=.097).
“Even though no significant time × group interaction was found for the AAQ-9, F(1, 36) = 3.85, p = .057,partial η 2 = .097”
Quote in the paperNot a substantial claim - Findingown data
In the ITT analysis for the IUS, there was a significant main effect of time (F(1,48)=45.79, p<.001, partial η2=.488), with greater tolerance of uncertainty from pre- to post-assessment across both groups.
“Correspondingly, the mixed factorial analysis on the IUS, using the ITT data, showed a significant main effect of time, F(1, 48) = 45.79,p < .001,partial η 2 = .488,whereby a greater tolerance of uncertainty was reported by participants from pre-to post-assessment across both groups.”
Quote in the paperSubstantial claim - Findingown data
Apart from quality of life, where a moderate effect size was recorded (d=0.5), the changes on the outcome measures indicated large effect sizes.
“Apart from the measure of quality of life, whereby a moderate effect size was recorded (d = 0.5), the changes on the outcome measures indicated large effect sizes.”
Quote in the paperNot a substantial claim - Findingown data
Ratings of distress: significant main effect of group, F(1, 49) = 4.93, p = .031, partial η2 = .091.
“Also, a significant main effect of group was found, F(1, 49) = 4.93, p = .031,partial η 2 = .091.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
PSWQ ITT: significant reduction in worrying symptoms from pre-to post-assessment across both groups, F(1, 49) = 42.54, p < .001, partial η2 = .465.
“A significant reduction in worrying symptoms from pre-to post-assessment was found across both groups, F(1, 49) = 42.54,p < .001,partial η 2 = .465.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
Simple effect analysis showed that the groups differed at reported distress levels in the last treatment session, with the ACT group showing significantly lower levels of distress compared to the CBT group, F(1,49) = 8.44, p = .005, partial η2 = .147.
“Simple effect analysis showed that the groups differed at reported distress levels in the last treatment session, with the ACT group showing significantly lower levels of distress compared to the CBT group, F(1,49) = 8.44, p = .005,partial η 2 = .147.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
Treatment benefits were maintained at 3-month follow-up for both worrying and quality of life.
“Treatment benefits were maintained at 3-month follow-up for both worrying and quality of life”
Quote in the paperSubstantial claim - Findingown data
Ratings of interference: significant main effect of time, F(2, 98) = 26.15, p = .000, partial η2 = .348, showing that participants across both groups reported lower levels of interference of their symptoms with everyday life activities over the course of therapy.
“Significant main effect of time was also found, F(2, 98) = 26.15,p = .000,partial η 2 = .348,showing that participants, across both groups, reported lower levels of interference of their symptoms with everyday life activities over the course of therapy.”
Quote in the paperNot a substantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
For the PSWQ, there was a significant main effect of time, indicating significant reductions in pre-to post-levels of worrying across both groups, F(1, 36) = 59.90, p < .001, partial η2 = .625.
“For the PSWQ there was a significant main effect of time, indicating significant reductions in pre-to post-levels of worrying across both groups, F(1, 36) = 59.90, p < .001,partial η 2 = .625.”
Quote in the paperSubstantial claim - Findingown data
The time × group interaction for the IUS approached significance (F(1,37)=4.13, p=.050, partial η2=.106), indicating greater increase in tolerating uncertainty for the ACT group compared to the CBT group.
“Time × group interaction approached significance, F(1, 37) = 4.13, p = .050,partial η 2 = .106,indicating greater increase in tolerating uncertainty for participants in the ACT group as opposed to the CBT group.”
Quote in the paperNot a substantial claim - Findingown data
At post-assessment, 73.7% of participants in the ACT group achieved both reliable change and clinical significance compared to 42.1% in the CBT group.
“Furthermore, 73.7% of participants in the ACT group achieved both reliable change and clinical significance relative to 42.1% of participants in the CBT group.”
Quote in the paperSubstantial claim - Findingown data
For the CAQ, there was a significant main effect of time (F(1,35)=11.39, p=.002, partial η2=.245), suggesting both treatment groups demonstrated a significant reduction in cognitive avoidance strategies at treatment completion.
“The results on the CAQ showed a significant main effect of time, F(1, 35) = 11.39,p = .002,partial η 2 = .245,suggesting that both treatment groups demonstrated a significant reduction in using cognitive avoidance strategies at treatment completion.”
Quote in the paperSubstantial claim - Findingown data
For the AAQ willingness subscale, there was a significant increase in acceptance of unwanted experiences from pre- to post-assessment across both groups (F(1,36)=52.31, p<.001, partial η2=.592).
“willingness subscale, F(1, 36) = 52.31,p < .001,partial η 2 = .592.”
Quote in the paperNot a substantial claim - Findingown data
The ACT group demonstrated significantly steeper gains over the course of treatment on worrying, with a moderate interaction effect size (d=.79), compared to the CBT group.
“However, the ACT group demonstrated significantly steeper gains over the course of treatment, with moderate interaction effect size (d = .79),compared to the CBT group.”
Quote in the paperSubstantial claim - Findingown data
Further significant improvements were found in anxiety from post- to 3-month follow-up across both groups (F(1,28)=8.92, p=.006, partial η2=.242).
“anxiety, F(1, 28) = 8.92, p = .006,partial η 2 = .242”
Quote in the paperSubstantial claim - Findingown data
There was no significant time × group interaction for the AAQ willingness subscale (F(1,36)=3.95, p=.055, partial η2=.099).
“or willingness subscale, F(1, 36) = 3.95, p = .055,partial η 2 = .099”
Quote in the paperNot a substantial claim - Findingown data
Equivalent improvements were found on a measure of cognitive avoidance, with participants in both groups reporting less avoidance of cognitive and emotional materials.
“Equivalent improvements were found on a measure of cognitive avoidance, whereby participants in both groups reported less avoidance of cognitive and emotional materials.”
Quote in the paperSubstantial claim - Findingown data
Further significant improvements were found in depression from post- to 3-month follow-up across both groups (F(1,28)=6.25, p=.019, partial η2=.183).
“further significant improvements were found in relation to depression, F(1, 28) = 6.25, p = .019,partial η 2 = .183”
Quote in the paperSubstantial claim - Findingown data
There was no main effect of group for the IUS (F(1,35)=.440, p=.511, partial η2=.012).
“No main effect of group, F(1, 35) = .440,p = .511,partial η 2 = .012was found.”
Quote in the paperNot a substantial claim - Findingown data
For the IUS, there was a significant main effect of time (F(1,35)=68.21, p<.001, partial η2=.661), showing greater ability to handle uncertainty after treatment compared to pre-assessment across both groups.
“The results demonstrated a significant main effect of time, F(1, 35) = 68.21,p < .001,partial η 2 = .661,showing participants' greater ability to handle uncertainty after treatment completion compared to pre-assessment across both groups.”
Quote in the paperSubstantial claim - Findingown data
There was no main effect of group for the WW-II total in the ITT analysis (F(1,49)=.94, p=.335, partial η2=.019).
“There was no main effect of group, F(1, 49) = .94,p = .335,partial η 2 = .019”
Quote in the paperNot a substantial claim - Findingown data
For the WW-II total score, there was a significant main effect of time (F(1,36)=25.39, p<.001, partial η2=.414), demonstrating a significant decrease in positive beliefs about worrying from pre- to post-assessment across both groups.
“A significant main effect of time for the total score on the WW-II was found, demonstrating a significant decrease in positive beliefs about worrying from pre-to post-assessment across both groups, F(1, 36) = 25.39,p < .001,partial η 2 = .414.”
Quote in the paperNot a substantial claim - Findingown data
In the ITT analysis for the CAQ, there was a significant main effect of time (F(1,49)=12.14, p=.001, partial η2=.199).
“Similar results were obtained in the ITT analysis, with a significant main effect of time, F(1, 49) = 12.14, p = .001,partial η 2 = .199”
Quote in the paperSubstantial claim - Findingown data
There was no time × group interaction for the WW-II total in the ITT analysis (F(1,49)=3.37, p=.073, partial η2=.066).
“and no time × group interaction, F(1, 49) = 3.37, p = .073,partial η 2 = .066.”
Quote in the paperNot a substantial claim - Findingnone given
Significant treatment gains reported on process measures at post-assessment were sustained at the follow-up.
“Similarly, significant treatment gains reported on process measures at post-assessment were sustained at the follow-up.”
Quote in the paperSubstantial claim - Findingown data
Ratings of distress: significant time × group interaction, F(2, 98) = 3.50, p = .038, partial η2 = .067.
“There was a significant time × group interaction, F(2, 98) = 3.50, p = .038,partial η 2 = .067.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
In the ITT sample, there was a trend of steeper increase in acceptance and action subscales for the ACT group compared to the CBT group.
“A similar trend of steeper increase in acceptance and action subscales for the ACT group compared to the CBT group was noted for the ITT sample as well.”
Quote in the paperNot a substantial claim - Findingown data
There was no main effect of group for the WW-II total (F(1,36)=1.73, p=.197, partial η2=.046).
“and no main effect of group, F(1, 36) = 1.73, p = .197,partial η 2 = .046.”
Quote in the paperNot a substantial claim - Findingown data
For the AAQ-9, there was a significant main effect of time (F(1,36)=42.8, p<.001, partial η2=.543), indicating greater experiential acceptance across both groups at the end of treatment.
“The results showed a significant main effect of time for the AAQ-9, (1, 36) = 42.8,p < .001,partial η 2 = .543,indicating greater experiential acceptance across both groups at the end of treatment.”
Quote in the paperNot a substantial claim - Findingnone given
All treatment gains on process measures were maintained at the follow-up assessment.
“All treatment gains on process measures were maintained at the follow-up assessment.”
Quote in the paperNot a substantial claim - Findingown data
Changes in distress and interference over the course of therapy were greater for the ACT than for the CBT condition.
“Equally, the changes in distress and interference over the course of therapy were greater for the ACT than for the CBT condition.”
Quote in the paperSubstantial claim - Findingown data
Both groups showed similar improvements in participants' reported levels of depression, stress, anxiety, and quality of life from pre- to post-assessment.
“When compared to each other, both groups showed similar improvements in participants' reported levels of depression, stress, anxiety, and quality of life from preto post-assessment.”
Quote in the paperSubstantial claim - Findingown data
PSWQ ITT: no main effect of group, F(1, 49) = 1.51, p = .289, partial η2 = .023.
“No main effect of group was found, F(1, 49) = 1.51, p = .289,partial η 2 = .023.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
QOLI: significant improvement in quality of life across both groups from pre-to post-assessment, F(1, 32) = 10.71, p = .003, partial η2 = .251.
“A significant improvement in quality of life was noted across both groups from pre-to post-assessment, F(1, 32) = 10.71,p = .003,partial η 2 = .251.”
Quote in the paperNot a substantial claim - Findingown data
Ratings of interference: significant interaction effect, suggesting steeper changes in interference for the ACT group compared to the CBT group, F(2, 98) = 5.60, p = .003, partial η2 = .109.
“The results indicated a significant interaction effect, suggesting a steeper changes in interference for the ACT group compared to the CBT group, F(2, 98) = 5.60, p = .003,partial η 2 = .109.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
- Findingown data
There was no main effect of group for the IUS in the ITT analysis (F(1,48)=.21, p=.651, partial η2=.004).
“There was no main effect of group, F(1, 48) = .21,p = .651,partial η 2 = .004.”
Quote in the paperNot a substantial claim - Findingown data
There were no statistically significant differences in therapists' competences between the treatment groups.
“Furthermore, there were no statistically significant differences in therapists' competences between the treatment groups”
Quote in the paperSubstantial claim - Findingown data
This was particularly evident for the ACT group, whereby the majority of participants showed clinical improvements at the end of treatment.
“This was particularly evident for the ACT group, whereby the majority of participants showed clinical improvements at the end of treatment.”
Quote in the paperNot a substantial claim - Premisecitation
GAD has a low probability of spontaneous recovery.
“and has a low probability of spontaneous recovery (Wittchenn & Hoyer, 2001).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Wittchenn & Hoyer, 2001
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Study design and conductown data
Data from 38 participants (19 in each group) were available at post-assessment.
“Data from 38 participants (19 in each group) were available at post-assessment”
- Also stated in: § Participants · plain
“complete data from 38 participants was available at post-assessment, 19 in the ACT group and 19 in the CBT group.”
Quote in the paperSubstantial claim - Also stated in: § Participants · plain
- Premisecitation
The percentage of GAD individuals who do not respond optimally to CBT is larger than for other anxiety disorders.
“the percentage of GAD individuals who do not respond optimally to CBT is larger than for other anxiety disorders (Brown, Barlow, & Liebowitz, 1994).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Brown, Barlow, & Liebowitz, 1994
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Premisecitation
CBT demonstrated the smallest average effect size for GAD in comparison with effect sizes of CBT for other anxiety disorders.
“Newman and colleagues noted that CBT demonstrated the smallest average effect size for GAD in comparison with effect sizes of CBT for other anxiety disorders (Newman, Castonguay, Borkovec, Fisher, & Nordberg, 2008)”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Newman, Castonguay, Borkovec, Fisher, & Nordberg, 2008 source
- Premisecitation
Meta-analyses have supported CBT's effectiveness in reducing general anxiety symptoms and pathological worrying in GAD sufferers.
“several meta-analyses have supported its effectiveness in reducing general anxiety symptoms and pathological worrying in GAD sufferers (e.g., Borkovec & Ruscio, 2001;Covin, Ouimet, Seeds, & Dozois, 2008;Gould, Safren, Washington, & Otto, 2004;Westen & Morrison, 2001)”
Quote in the paperSubstantial claim0 of 3 sources checked- cites Borkovec & Ruscio, 2001
- cites Covin, Ouimet, Seeds, & Dozois, 2008 source
- cites Gould, Safren, Washington, & Otto, 2004
- Interpretationown data
Group ACT was as efficacious as group CBT.
“The results suggest that group ACT was as efficacious as group CBT.”
Quote in the paperSubstantial claim - Study design and conductown data
There were no significant differences between participants who withdrew from the study and those who commenced the group treatment on any demographic, outcome or process measures.
“There were no significant differences between participants who withdrew from the study and those who commenced the group treatment on any demographic, outcome or process measures.”
Quote in the paperNot a substantial claim - Study design and conductown data
Similar scores were obtained for each group treatment.
“Similar scores were obtained for each group treatment.”
Quote in the paperNot a substantial claim - Study design and conductown data
The inter-rater reliability for the current study was good with a kappa value of .74.
“The inter-rater reliability for the current study was good with a kappa value of .74.”
Quote in the paperNot a substantial claim - Premisecitation
Successful treatment of GAD often requires the individuals to attend around 16 individual sessions.
“as the successful treatment of GAD often requires the individuals to attend around 16 individual sessions”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Glaser, Blackledge, Shepherd, & Deane, 2009
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Premisecitation
People's ability to distance themselves from their thoughts and not perceive them as absolute truths was a common factor in both interventions.
“the same authors noted that people's ability to distance themselves from their thoughts and not perceive them as absolute truths was a common factor in both interventions.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Forman et al., 2012 source
- Study design and conductown data
The independent ratings indicated a 100% adherence to treatment protocols for each of the groups.
“The independent ratings indicated a 100% adherence to treatment protocols for each of the groups.”
Quote in the paperNot a substantial claim - Premisecitation
Providing prolonged psychological interventions in communities or clinical settings is often difficult because of limited resources or people's inability to afford costly sessions.
“providing prolonged psychological interventions in communities or clinical settings is often difficult because of limited resources or people's inability to afford costly sessions (Glaser, Blackledge, Shepherd, & Deane, 2009).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Glaser, Blackledge, Shepherd, & Deane, 2009
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Study design and conductcitation
Participants met diagnostic criteria for GAD, confirmed by telephone screening interviews using the ADIS-IV according to DSM-IV criteria.
“Telephone screening interviews using the Anxiety Disorders Interview Schedule for DSM-IV (ADIS-IV; Di Nardo, Brown, & Barlow, 1994) were undertaken to confirm a GAD diagnosis according to the DSM-IV criteria”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Di Nardo, Brown, & Barlow, 1994
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Study design and conductnone given
Participants who dropped out of therapy did not differ from those who completed treatment on any characteristics (demographics or clinical variables) or study measure.
“Participants who dropped out of therapy did not differ from those who completed treatment on any characteristics (demographics or clinical variables) or study measure.”
Quote in the paperNot a substantial claim - Study design and conductown data
No significant differences between the ACT and CBT groups at pre-assessment on any demographic characteristics, clinical ratings, outcome or process measures were found.
“no significant differences between the groups on any demographic characteristics, clinical ratings, outcome or process measures were found.”
Quote in the paperSubstantial claim - Interpretationreasoning
A short, 6-week group therapy, either ACT or CBT, can lead to significant progress in outcomes among GAD individuals.
“These findings imply that a short, 6-week group therapy, either ACT or CBT, can lead to significant progress in outcomes among GAD individuals.”
Quote in the paperSubstantial claim - Study design and conductown data
Adherence ratings evaluated by independent assessors indicated 100% adherence to each of the treatment conditions.
“adherence ratings evaluated by the independent assessors indicated 100% adherence to each of those treatment conditions.”
Quote in the paperSubstantial claim - Study design and conductreasoning
The main limitation of the study is a small sample size that makes it hard to detect possible significant differences between the groups due to limitations of statistical power.
“The main limitation of the current study is a small sample size that makes it hard to detect possible significant differences between the groups due to limitations of statistical power.”
Quote in the paperNot a substantial claim - Study design and conductreasoning
The ADIS-IV and CSRs were not administered at post-assessment.
“Furthermore, the ADIS-IV and CSRs were not administered at post-assessment.”
Quote in the paperSubstantial claim - Interpretationown data
These findings might suggest that ACT delivered in a group format can lead to rapid clinical changes for individuals with GAD in a short period of time, especially in relation to worrying.
“These findings might suggest that ACT delivered in a group format can lead to rapid clinical changes for individuals with GAD in a short period of time, especially in relation to worrying.”
Quote in the paperSubstantial claim - Interpretationown data
Overall, the study demonstrated that ACT for GAD is as efficacious as the gold-standard CBT treatment for GAD.
“Overall, the study demonstrated that ACT for GAD is as efficacious as the gold-standard CBT treatment for GAD.”
Quote in the paperSubstantial claim - Interpretationown data
Therapist variables did not influence the study results.
“suggesting that therapist variables did not influence the study results.”
Quote in the paperNot a substantial claim
- Classified as probably not a substantial claim. 42
- May combine two claims. 50
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductcitationRandom assignment to ACT or CBT was based on CONSORT guidelines for running and reporting randomised controlled trials.
“Based on CONSORT guidelines for running and reporting randomised controlled trials (Moher, Schulz, & Douglas, 2001), Figure 1 shows the flow of participants throughout the study.”
Quote in the paperNot a substantial claim1 of 1 sources checked- cites Moher, Schulz, & Douglas, 2001 source
The CONSORT checklist (Results, item 13) strongly recommends a diagram showing participant flow, including the numbers randomly assigned to each group; this supports the citation for Figure 1. The Discussion says CONSORT was developed to improve reporting of trials, not to prescribe how to run a trial or assign participants to ACT or CBT. (LLM, conf=0.88)
Experimental — accuracy not yet measured
Classified as probably not a substantial claim.
PremisecitationRecommendations that further research is necessary to determine the generalisability of the findings, and in particular to further compare the acceptance based therapies to active treatments for GAD, remains.
“Nevertheless, the recommendations from Roemer et al. (2008) and Powers, Zum Vörde Sive Vörding, and Emmelkamp (2009) that further research is necessary to determine the generalisability of the findings, and in particular to further compare the acceptance based therapies to active treatments for GAD, remains.”
Quote in the paperSubstantial claim1 of 2 sources checkedProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationResults of a randomised controlled trial of ABBT for GAD using a wait-list control demonstrated its efficacy and indicated that 77% of participants achieved high end-state functioning at post-assessment, with these gains being maintained at both 3-month and 9-month follow-up.
“Results of a randomised controlled trial of ABBT for GAD using a wait-list control demonstrated its efficacy and indicated that 77% of participants achieved high end-state functioning at post-assessment, with these gains being maintained at both 3-month and 9-month follow-up (Roemer et al., 2008).”
Quote in the paperNot a substantial claim1 of 1 sources checked- cites Roemer et al., 2008 source
May combine two claims.
Study design and conductcitationThe attrition rate across both interventions was 25.5%, similar to other studies such as Arch et al. (2012).
“While the number of people who dropped out of therapy across both interventions was high (25.5%),this attrition rate is similar to other studies, such as Arch et al. (2012).”
Quote in the paperNot a substantial claim1 of 1 sources checked- cites Arch et al., 2012 source
May combine two claims.
PremisecitationABBT has been investigated in an open trial, a randomised wait-list controlled trial, and a randomised controlled trial of ABBT and applied relaxation.
“another acceptancebased approach, developed specifically for GAD -acceptance-based behavioural therapy (ABBT; Roemer & Orsillo, 2005) -has been investigated in an open trial (Roemer & Orsillo, 2007), a randomised wait-list controlled trial (Roemer, Orsillo, & Salters-Pedneault, 2008), and a randomised controlled trial of ABBT and applied relaxation (Hayes-Skeleton, Roemer, & Orsillo, 2013).”
Quote in the paperNot a substantial claim1 of 3 sources checked- cites Roemer & Orsillo, 2005
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites Roemer & Orsillo, 2007
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites Roemer, Orsillo, & Salters-Pedneault, 2008 source
May combine two claims.
Findingown dataThere was no main effect of group for the AAQ-9 scale or the action and willingness subscales.
“There was no main effect of group for either the AAQ-9 scale or the action and willingness subscales.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataSimple effect analysis demonstrated a significant difference between the groups in Session 6, F(1, 49) = 8.82, p = .005, partial η2 = .153, with participants in the ACT group reporting lower levels of interference compared to the CBT group.
“Simple effect analysis demonstrated a significant difference between the groups in Session 6, F(1, 49) = 8.82, p = .005partial η 2 = .153,with participants in the ACT group reporting lower levels of interference compared to the CBT group.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
May combine two claims.
Findingown dataDASS-21 ITT: significant main effect of time for each subscale: depression F(1,49)=26.31, p<.001, partial η2=.349; anxiety F(1,49)=39.65, p<.001, partial η2=.447; stress F(1,49)=45.12, p<.001, partial η2=.479.
“The ITT analyses also revealed significant main effect of time for each of the DASS subscales across both group.Participants reported significantly lower levels of depressive symptoms, F(1, 49) = 26.31,p < .001,partial η 2 = .349,anxiety, F(1, 49) = 39.65,p < .001,partial η 2 = .447,and stress, F(1, 49) = 45.12,p < .001,partial η 2 = .479from pre-to post-assessment.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
May combine two claims.
Findingown dataIn the ITT analysis for the CAQ, there was no significant time × group interaction and no main effect of group.
“and no significant time × group interaction and no main effect of group.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataQOLI ITT: participants reported better quality of life at post-assessment across both interventions, F(1, 45) = 7.81, p = .008, partial η2 = .148.
“Participants reported better quality of life at post-assessment across both interventions, F(1, 45) = 7.81, p = .008,partial η 2 = .148.”
Quote in the paperNot a substantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
May combine two claims.
Findingown dataIn the IUS ITT analysis, the ACT group demonstrated a steeper improvement with a moderate effect size, but the difference did not reach statistical significance (F(1,48)=3.05, p=.087, partial η2=.060).
“While the ACT group demonstrated a steeper improvement with moderate effect size, the difference found did not reach statistical significance, F(1, 48) = 3.05, p = .087,partial η 2 = .060.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataWhile the ACT group initially achieved greater improvements in worrying symptoms, this difference was not evident at follow-up, with both groups showing comparable results on the PSWQ.
“While the ACT group initially achieved greater improvements in participants' worrying symptoms, this difference was not evident at the follow-up, with both groups showing comparable results on the PSWQ.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataDASS-21: no significant time × group interaction and no main effect of group for any of the DASS subscales.
“No significant time × group interaction and no main effect of group were found for any of the DASS subscales.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataAt follow-up, there were no differences between the two interventions, with both groups achieving reliable change rates of 60%.
“However, there were no differences between the two interventions at the follow-up assessment, with both groups achieving reliable change rates of 60%.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataQOLI ITT: no main effect of group, F(1, 45) = 0.00, p = .985, partial η2 = .000, and no interaction between group and time, F(1, 45) = .078, p = 0.78, partial η2 = .002.
“No main effect of group, F(1, 45) = 0.00, p = .985,partial η 2 = .000,and no interaction between group and time, F(1, 45) = .078,p = 0.78, partial η 2 = .002,was found.”
Quote in the paperNot a substantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
May combine two claims.
Findingown dataSimple effect analysis showed a greater reduction of worrying at post-assessment for the ACT intervention compared to the CBT intervention; however, the difference did not reach statistical significance, F(1, 36) = 3.64, p = .064, partial η2 = .092.
“Simple effect analysis showed a greater reduction of worrying at postassessment for the ACT intervention compared to the CBT intervention; however, the found difference did not reach statistical significance, F(1, 36) = 3.64, p = .064,partial η 2 = .092.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataDASS-21 ITT: no significant main effect of group, and no interaction effect for the DASS subscales.
“There was no significant main effect of group, and no interaction effect found for the DASS subscales.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
May combine two claims.
Findingown dataThe treatment benefits obtained in the current study at the end of the group interventions were either maintained or further improved at 3-month follow-up, with no significant differences between the two groups.
“In addition, the above treatment benefits obtained in the current study at the end of the group interventions were either maintained or further improved at 3-month follow-up, with no significant differences between the two groups.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataNo significant time × group interactions or main effect of group was found for any of the outcome measures at the follow-up assessment.
“No significant time × group interactions or main effect of group was found for any of the outcome measures at the follow-up assessment.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataAlthough the interaction was not significant, there was a trend of steeper decrease on the WW-II for the ACT group relative to the CBT group.
“Nevertheless, while the interaction effect was not significantly different, a trend of steeper decrease on this measure was found for the ACT group relative to the CBT group.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataThe obtained benefits were maintained at 3-month follow-up, with further gains on the DASS-21 for both groups.
“Furthermore, the obtained benefits were maintained at 3-month follow-up, with further gains on the DASS-21 for both groups.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataBoth groups reported greater acceptance of distressing thoughts, sensations and feelings, and increased tolerance of uncertainty at the end of treatment, with a trend towards a steeper increase on these measures with moderate effect sizes for the ACT group compared to the CBT group.
“the findings indicated that although both groups reported greater acceptance of distressing thoughts, sensations and feelings, and increased tolerance of uncertainty at the end of treatment, a trend towards a steeper increase on these measures with moderate effect sizes was recorded for the ACT group compared to the CBT group.”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataQOLI: no main effect of group F(1, 32) = .048, p = .828, partial η2 = .001 and no interaction between group and time F(1, 32) = .803, p = .377, partial η2 = .024.
“There was no main effect of group F(1, 32) = .048,p = .828,partial η 2 = .001and no interaction between group and time F(1, 32) = .803,p = .377,partial η 2 = .024.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataPSWQ ITT: time × group interaction only approached statistical significance, F(1, 49) = 3.97, p = .052, partial η2 = .075; effect size moderate and suggested a sharper decline in worrying from pre-to post-treatment for the ACT group compared to the CBT group.
“While time × group interaction only approached statistical significance, F(1, 49) = 3.97, p = .052,partial η 2 = .075,the effect size of the difference was moderate and suggested a sharper decline in worrying from pre-to post-treatment for the ACT group compared to the CBT group.”
Quote in the paperNot a substantial claim- The authors state this as an assumption: Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
May combine two claims.
Findingown dataA larger number of participants in the ACT group were considered improved or recovered at the end of treatment compared to the CBT group, but no differences between groups were recorded at follow-up, with CBT participants continuing to improve from post- to follow-up.
“While a larger number of participants in the ACT group were considered improved or recovered at the end of treatment compared to the CBT groups, no differences between the groups were recorded at the follow-up, with participants in the CBT group continuing to improve from post-to follow-up assessment.”
Quote in the paperSubstantial claimClassified as probably not a substantial claim.
PremisecitationOnly around 50% of GAD individuals reach high end-state functioning after treatment.
“generally, only around 50% of GAD individuals reach high end-state functioning after treatment (Erikson & Newman, 2005).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Erikson & Newman, 2005
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Classified as probably not a substantial claim.
Study design and conductown dataFifty-one individuals with GAD were randomly allocated to a 6-week intervention, either ACT or CBT.
“Fifty-one individuals with GAD were randomly allocated to a 6-week intervention, either ACT or CBT.”
- Also stated in: § Participants · plain
“The remaining 51 participants (34 females and 17 males), aged between 19 and 69 years (M = 36.17,SD = 13.1), were randomly allocated either to the ACT group (n = 25) or CBT group (n = 26).”
Quote in the paperSubstantial claim- Also stated in: § Participants · plain
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationGAD leads to significant impairment in everyday life.
“which leads to significant impairment in the everyday life of its sufferers (Kessler, Walters, & Witchen, 2004)”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Kessler, Walters, & Witchen, 2004
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationGAD is a chronic condition.
“Generalised anxiety disorder (GAD) is described as a chronic condition (Yonkers, Warshaw, Massion, & Keller, 1996)”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Yonkers, Warshaw, Massion, & Keller, 1996 source
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationGAD is commonly associated with other disorders.
“commonly associated with other disorders (Brown & Barlow, 1992)”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Brown & Barlow, 1992
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Classified as probably not a substantial claim.
PremisecitationCBT is suggested as a preferred type of therapy for GAD.
“While CBT is suggested as a preferred type of therapy for GAD (Ballenger et al., 2001)”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Ballenger et al., 2001
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
May combine two claims.
Study design and conductown dataIn the current study, the internal consistency of the competence subscale and intra-class correlation were good (α = .83 and ICC = .86).
“In the current study, the internal consistency of the competence subscale and intra-class correlation were good (α = .83and ICC = .86).”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataFor the ACT group, the knowledge of treatment was rated as 4.8, the skill in delivering treatment as 4.5, the appropriate application of treatment components as 4.4, and the relationship with participants as 4.2.
“For the ACT group, the knowledge of treatment was rated as 4.8, the skill in delivering treatment as 4.5, the appropriate application of treatment components as 4.4, and the relationship with participants as 4.2.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataThe therapist's competence was assessed in relation to five skills: knowledge of treatment, skill in delivering treatment, appropriate application of treatment components within the context of session, relationship with the client, and overall performance.
“The therapist's competence was assessed in relation to five skills: 'knowledge of treatment', 'skill in delivering treatment', 'appropriate application of treatment components within the context of session', 'relationship with the client', and 'overall performance'.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataNine participants discontinued their therapy during the study period, three from ACT (12%) and six from CBT (23%).
“Nine participants discontinued their therapy during the study period, three from the ACT group (12%) and six from the CBT group (23%).”
Quote in the paperNot a substantial claimMay combine two claims.
PremisecitationThe inter-rater reliability for the competence subscale was found to be good with ICC = .86, while the internal consistency was very good with α = .95.
“The inter-rater reliability for the competence subscale was found to be good with ICC = .86,while the internal consistency was very good with α = .95(McGrath et al., 2005).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites McGrath et al., 2005
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S1 (asserted), S3 (load-bearing).
PremisecitationThe main difference between ACT and CBT lies in their theoretical explanations of psychopathology.
“Researchers have suggested that the main difference between the two approaches lies in their theoretical explanations of psychopathology (Forman et al., 2012).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Forman et al., 2012 source
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataIn the current study, the internal consistency of the IUS was α = .96.
“Similar results for internal consistency were obtained in the current study with α = .96.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationThe AAQ has demonstrated acceptable internal consistency and test-retest reliability over a 4-month period.
“The AAQ has demonstrated acceptable internal consistency (α = .70)and test-retest reliability (r = .64)over a 4-month period (Hayes et al., 2004).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Hayes et al., 2004 source
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductown dataIn the current study, the DASS-21 subscales demonstrated good internal consistency (α = .90 for depression, α = .81 for anxiety and α = .84 for stress).
“In the current study, the DASS-21 subscales demonstrated good internal consistency (α = .90for depression, α = .81for anxiety and α = .84for stress).”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim.
Study design and conductown dataParticipants were randomly assigned to either CBT or ACT condition using simple randomisation.
“Participants were randomly assigned to either CBT or ACT condition using simple randomisation.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataIn the current study, the internal consistency of the PSWQ was very good, with α = .90.
“In the current study, the internal consistency was very good, with α = .90.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataIn the current study, the internal consistency for the CAQ was very good with α = .96.
“In the current study, the internal consistency for the scale was very good with α = .96.”
Quote in the paperNot a substantial claimMay combine two claims.
Premiseown dataThe ACT and CBT subscales of the DUACRS showed very good inter-rater reliability and internal consistency.
“The ACT and CBT subscales showed very good inter-rater reliability, as measured by the intra-class correlation coefficient (ICC = .96for ACT and ICC = .94for CBT) and internal consistency (α = .93for ACT and α = .91for CBT).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites McGrath et al., 2005
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataFour participants, even though completing treatment, did not return their post-assessment questionnaires.
“Four participants, even though completing treatment, did not return their post-assessment questionnaires (three from the ACT group and one from the CBT group).”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataIn the current study, the internal consistency for the total WW-II was α = .95.
“Similar results were obtained in the current study, with α = .95for the total scale.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationHolowka et al. (2000) reported very good internal consistency for the total WW-II (α = .93).
“Holowka et al. (2000) reported very good internal consistency for the total WW-II (α = .93).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Holowka et al., 2000
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationThe reported inter-rater reliability for principal GAD diagnosis is k = .67.
“The reported inter-rater reliability for principal GAD diagnosis is k = .67(Brown, Di Nardo, Lehman, & Campbell, 2001).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Brown, Di Nardo, Lehman, & Campbell, 2001
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductcitationThe DUACRS was used to assess treatment fidelity.
“The Drexel University ACT/CBT Therapist Adherence and Competence Rating Scale (DUACRS: McGrath et al., 2005) was used to assess treatment fidelity.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites McGrath et al., 2005
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
May combine two claims.
Study design and conductown dataThe CBT received the following ratings: 5 for the knowledge of treatment, 4.8 for the skill in delivering treatment, 4.6 for the appropriate application of treatment components, and 4.2 for the relationship with participants.
“The CBT received the following ratings: 5 for the knowledge of treatment, 4.8 for the skill in delivering treatment, 4.6 for the appropriate application of treatment components, and 4.2 for the relationship with participants.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataThe overall competence was judged to be 4.4 for the ACT group and 5 for the CBT group.
“Finally, the overall competence was judged to be 4.4 for the ACT group and 5 for the CBT group.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenThe randomisation process was conducted by the first author with the leading group therapist blind to the randomisation procedure.
“The randomisation process was conducted by the first author with the leading group therapist blind to the randomisation procedure.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationThe CAQ has shown very good internal consistency and good test-retest reliability over a 4- to 6-week period.
“The CAQ has shown very good internal consistency (α = .95)and good test-retest reliability over a 4-to 6-week period, r = .85(Sexton & Dugas, 2008).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Sexton & Dugas, 2008 source
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationThe PSWQ has demonstrated good to very good internal consistency and adequate to good test-retest reliability.
“The PSWQ has demonstrated good to very good internal consistency (coefficients alpha ranging from .86 to .93. across clinical and college samples) and adequate to good test-retest reliability (r = .74to .93 across periods ranging from 2 to 10 weeks (Molina & Borkovec, 1994).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Molina & Borkovec, 1994
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Classified as probably not a substantial claim. May combine two claims.
PremisecitationACT places an emphasis on psychological flexibility and argues that experiential avoidance is a central reason for developing psychopathology.
“ACT places an emphasis on psychological flexibility and argues that experiential avoidance -either struggle with, or an attempt to control, aversive internal experiences (e.g., thoughts, feelings and sensations) -is a central reason for developing psychopathology (Hayes et al., 1999).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Hayes et al., 1999
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Classified as probably not a substantial claim.
Study design and conductreasoningTo control for therapist effect confounds, each session for both groups was conducted jointly by the same therapists.
“To control for therapist effect confounds, each session for both groups was conducted jointly by the same therapists.”
Quote in the paperSubstantial claimClassified as probably not a substantial claim. May combine two claims.
PremisecitationWhile there is now evidence that ACT can be effectively used for anxiety problems, research is still required comparing ACT with CBT to establish any advances in using ACT over CBT.
“While there is now evidence that ACT can be effectively used for anxiety problems, research is still required comparing ACT with CBT to establish any advances in using ACT over CBT ( Öst, 2008;Powers et al., 2009).”
Quote in the paperSubstantial claim0 of 2 sources checked- cites Öst, 2008
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites Powers et al., 2009 source
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductown dataIn the current study, internal consistency was similar with α = .70 for AAQ-9, and α = .69 for both action and willingness subscales.
“In the current study, internal consistency was similar with α = .70for AAQ-9, and α = .69for both action and willingness subscales.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductcitationThe current study did not use a wait-list control group, based on a suggestion that the comparison of a relatively new treatment and a well-established one does not need to include a control group.
“The current study did not use a wait-list control group.The decision was based on a suggestion that the comparison of a relatively new treatment and a well-established one does not need to include a control group (Kazdin, 2002).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Kazdin, 2002
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
May combine two claims.
PremisecitationForman et al. (2012) concluded that psychological acceptance strategies facilitated outcome for ACT, while cognitive and affective change strategies facilitated outcome for CBT.
“Forman et al. (2012) in their study that investigated unique and common mechanisms of change for ACT and CBT, concluded that 'psychological acceptance strategies' facilitated outcome for ACT, while 'cognitive and affective change strategies', such as cognitive restructuring, facilitated the outcome for CBT.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Forman et al., 2012 source
Classified as probably not a substantial claim.
PremisecitationCBT pinpoints dysfunctional cognitions, arising from flawed information processing, as one of the main contributors to psychopathology.
“CBT pinpoints dysfunctional cognitions, arising from flawed information processing, as one of the main contributors to psychopathology (Forman et al., 2012).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Forman et al., 2012 source
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationThe English translation of the IUS has demonstrated very good internal consistency in a sample of college students and good test-retest reliability over a period of 5 weeks.
“The English translation of the IUS has demonstrated very good internal consistency in a sample of college students, α = .94,and good test-retest reliability over a period of 5 weeks, r = .74(Buhr & Dugas, 2002).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Buhr & Dugas, 2002 source
Classified as probably not a substantial claim.
Study design and conductnone givenIn the current study, 20% of randomly selected, digitally recorded sessions were rated by two independent clinical psychologists who were trained both in ACT and CBT and who had no other involvement with the current study.
“In the current study, 20% of randomly selected, digitally recorded sessions were rated by two independent clinical psychologists who were trained both in ACT and CBT and who had no other involvement with the current study.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductown dataIn the current study, the internal consistency of the QOLI was good, with α = .83.
“The internal consistency for the current study was good, with α = .83.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationThe DASS has been found to have good internal consistency.
“The DASS has been found to have good internal consistency (α = .91,.84,.90 for depression, anxiety and stress, respectively; Lovibond & Lovibond, 1995).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Lovibond & Lovibond, 1995
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
May combine two claims.
PremisecitationHayes-Skeleton et al. (2013) found that between 63.3% and 80% of participants in ABBT demonstrated clinically significant change, which was comparable to changes in applied relaxation.
“Similarly, Hayes-Skeleton et al. (2013) found that between 63.3% and 80% of participants in ABBT demonstrated clinically significant change, which was comparable to changes in applied relaxation.”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Hayes-Skeleton et al., 2013
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductreasoningIn this study, the inter-rater reliability was not calculated as the ADIS-IV interviews were conducted over the phone and not recorded to allow a comparison between the assessors.
“In this study, the inter-rater reliability was not calculated as the ADIS-IV interviews were conducted over the phone and not recorded to allow a comparison between the assessors.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
PremisecitationThe QLI demonstrated good internal consistency and good test-retest reliability over a 2-week period.
“The QLI demonstrated good internal consistency (α = .79 in a community sample) and good test-retest reliability over a 2-week period, r = .73(Frish, 1994).”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites Frish, 1994
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
May combine two claims.
InterpretationcitationThe results are consistent with the proposition that ACT might achieve changes through decreasing experiential avoidance and that CBT results might be attributable to affective and cognitive changes.
“These results are consistent with the proposition that ACT might achieve changes through decreasing experiential avoidance and that CBT results might be attributable to affective and cognitive changes (Forman et al., 2012).”
Quote in the paperSubstantial claim0 of 1 sources checked- cites Forman et al., 2012 source
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenTherapists' allegiance with either ACT or CBT was not assessed.
“While therapists' allegiance with either ACT or CBT was not assessed”
Quote in the paperNot a substantial claimMay combine two claims.
Interpretationown dataThe obtained effect sizes for the AAQ time × group interactions were moderate, suggesting greater magnitude of change from pre- to post-assessment for the ACT group compared to the CBT group.
“the obtained effect sizes were moderate, suggesting greater magnitude of change from pre-to post-assessment for the ACT group compared to the CBT group.”
Quote in the paperNot a substantial claimMay combine two claims.
Interpretationown dataThe interaction effect size for the WW-II ITT analysis was moderate, suggesting steeper changes for the ACT group.
“Once more, the interaction effect size was moderate, suggesting steeper changes for the ACT group.”
Quote in the paperNot a substantial claimMay combine two claims.
InterpretationreasoningWhile the CBT group achieved comparable results at follow-up, the clinical changes in CBT were more gradual compared to ACT, and participants in the CBT group needed more time to practise the CBT skills.
“While the CBT group achieved comparable results at the follow-up, it seemed that the clinical changes in CBT were more gradual compared to ACT, and that participants in the CBT group needed more time to practise the CBT skills.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenRegular daily discussions were scheduled, particularly around interviews that raised uncertainty regarding a diagnosis, and those cases were discussed in detail with mutual agreement about a diagnosis.
“In addition, regular daily discussions were scheduled, particularly around those interviews that raised some uncertainty regarding a diagnosis.Those cases were discussed in detail and mutual agreement about a diagnosis was made.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenAnother limitation was not calculating inter-rater reliability for ADIS interviews.
“Another limitation was in not calculating inter-rater reliability for ADIS interviews.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenAll ADIS interviews were performed by either an experienced clinical psychologist or a registered psychologist with at least 2 years of clinical practice.
“However, all interviews were performed by either an experienced clinical psychologist or registered psychologist with at least 2 years of clinical practice.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
InterpretationreasoningSimilar improvement rates were achieved at 3-month follow-up for the CBT group, suggesting that the CBT group might have needed more time to practise the skills in order to reach similar outcomes.
“Similar improvement rates were achieved at 3-month follow-up for the CBT group, suggesting that the CBT group might have needed more time to practise the skills in order to reach similar outcomes.”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim.
Study design and conductown dataThe results need to be interpreted with caution due to the small, well-educated sample size.
“Despite the pleasing outcomes from this study, the results do need to be interpreted with caution due to the small, well-educated sample size.”
Quote in the paperSubstantial claim
The authors state this as an assumption.
Individuals who discontinued treatment experienced no change (used in the last-observation-carry-forward ITT analysis).
“This method is based on the conservative hypothesis that individuals who discontinued treatment experienced no change.”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
ACT has been shown to be as effective as CBT and applied relaxation in the treatment of GAD.
“ACT has been shown to be as effective as CBT and applied relaxation in the treatment of GAD (11,12)”
From Optimising the acceptability and feasibility of acceptance and commitment therapy for treatment-resistant generalised anxiety disorder in older adults. (2019) · cites this paper as [11]
The Discussion reports that group ACT was as effective as group CBT for GAD. The passage on applied relaxation discusses a comparison with acceptance-based behavioural therapy (ABBT), not ACT, so this source does not support the applied-relaxation part of the claim. No page numbers are available in the supplied passages. (LLM, conf=0.90)
Experimental — accuracy not yet measuredResearch findings in the literature show that acceptance is effective on stress and anxiety.
“Given the specific research findings in the literature showing the effectiveness of acceptance on stress and anxiety, this result might be expected (Avdagic et al., 2014;Heydari et al., 2018;Livheim et al., 2015).”
From Exploring anxiety, uncertainty perception, treatment experiences and coping strategies: An interpretative phenomenological analysis. (2025) · cites this paper as Avdagic et al., 2014
The DASS-21 Results (page unavailable) report significantly fewer anxiety and stress symptoms after treatment in both the ACT and CBT groups. The Discussion (page unavailable) also reports increased acceptance, but the paper does not establish that acceptance itself, rather than the broader ACT intervention, caused the symptom reductions. (LLM, conf=0.82)
Experimental — accuracy not yet measuredACT has been proven effective for Social Anxiety Disorder and Generalized Anxiety Disorder treatment in adults.
“ACT has been proven effective for SAD and GAD treatment in adults [68–73].”
From Acceptance and commitment therapy as a transdiagnostic approach to adolescents with different anxiety disorders: study protocol. (2025) · cites this paper as [70]
The Discussion reports that group ACT was as efficacious as group CBT for GAD, supporting the GAD portion of the claim. The paper does not establish ACT’s effectiveness for social anxiety disorder; its participants had GAD as their primary problem. Page numbers were not available in our copy. (LLM, conf=0.88)
Experimental — accuracy not yet measuredAn RCT of ACT versus CBT for GAD found that intolerance of uncertainty improved in both conditions, with the ACT group performing slightly better.
“Furthermore, an RCT of ACT versus CBT for GAD found that IU improved in both conditions, with the ACT group performing slightly better (Avdagic et al., 2014).”
From Behind the masks: A cross-sectional study on intolerance of uncertainty, perceived vulnerability to disease and psychological flexibility in relation to state anxiety and wellbeing during the COVID-19 pandemic (2021) · cites this paper as Avdagic et al., 2014
Group-based ACT psychotherapy treatments have shown positive results in treating other anxiety disorders, including Social Anxiety Disorder, Generalized Anxiety Disorder, public speaking anxiety, and mixed anxiety disorders.
“Moreover, group-based ACT psychotherapy treatments have shown similarly positive results in treating other anxiety disorders, including Social Anxiety Disorder (Kocovski et al., 2013), Generalized Anxiety Disorder (Avdagic et al., 2014), public speaking anxiety (England et al., 2012), and mixed anxiety disorders (Glaser et al., 2009).”
From Acceptance and Commitment Coaching for Music Performance Anxiety: Piloting a 6-Week Group Course With Undergraduate Dance and Musical Theatre Students (2022) · cites this paper as Avdagic et al., 2014
Acceptance-based cognitive behavioral therapy has some support as a treatment for generalized anxiety disorder, with a study indicating that acceptance and commitment therapy can be as effective as cognitive behavioral therapy.
“Acceptance-based CBT has some support as a treatment for GAD (Hayes-Skelton et al., 2013, Roemer et al., 2008), with a study indicating that ACT can be as effective as CBT (Avdagic et al., 2014).”
From Internet-delivered acceptance-based behavior therapy for generalized anxiety disorder: A pilot study (2016) · cites this paper as Avdagic et al., 2014
Five studies (Avdagic et al., 2014; Bohlmeijer et al., 2011, Hancock et al., 2018; Pinto et al., 2017; Zettle et al., 2011) also report a high rate of adhesion to the treatment protocol on the part of the therapists.
“Five studies (Avdagic et al., 2014; Bohlmeijer et al., 2011, Hancock et al., 2018; Pinto et al., 2017; Zettle et al., 2011) also report a high rate of adhesion to the treatment protocol on the part of the therapists.”
From Acceptance and commitment therapy versus cognitive behavioral therapy in the treatment of substance use disorder with incarcerated women (2014) · cites this paper as Avdagic et al., 2014
In all studies data were obtained through standardized questionnaires and only four also used clinical interviews (Avdagic et al., 2014; Hancock et al., 2018; Perry et al., 2019; Tamannaei et al., 2017).
“Despite the ideographic and contextual character of ACT, in all studies data were obtained through standardized questionnaires and only four also used clinical interviews (Avdagic et al., 2014; Hancock et al., 2018; Perry et al., 2019; Tamannaei et al., 2017).”
From Acceptance and commitment therapy versus cognitive behavioral therapy in the treatment of substance use disorder with incarcerated women (2014) · cites this paper as Avdagic et al., 2014
In studies comparing ACT with CT or CBT, Avdagic et al. (2014) detected a trend towards a steeper increase in psychological flexibility for ACT group compared to CBT, while others (Hancock et al., 2018; Tamannaei et al., 2017) report equivalent changes.
“In the studies which compared ACT with CT or CBT, Avdagic et al. (2014) detected a trend towards a steeper increase in psychological flexibility for ACT group compared to CBT, while others (Hancock et al., 2018; Tamannaei et al., 2017) report equivalent changes.”
From Acceptance and commitment therapy versus cognitive behavioral therapy in the treatment of substance use disorder with incarcerated women (2014) · cites this paper as Avdagic et al. (2014)
Only six studies refer to some sort of supervision in the application of the intervention (Avdagic et al., 2014; Folke et al., 2012; Glover et al., 2016; Hancock et al., 2018; Livheim et al., 2015; Perry et al., 2019).
“Only six studies refer to some sort of supervision in the application of the intervention (Avdagic et al., 2014; Folke et al., 2012; Glover et al., 2016; Hancock et al., 2018; Livheim et al., 2015; Perry et al., 2019).”
From Acceptance and commitment therapy versus cognitive behavioral therapy in the treatment of substance use disorder with incarcerated women (2014) · cites this paper as Avdagic et al., 2014
Six studies used some kind of clinical interview, either alone or together with some screening procedure (Avdagic et al., 2014; Bohlmeijer et al., 2011; Hancock et al., 2018; Livheim et al., 2015; Perry et al., 2019; Tamannaei et al., 2017).
“Furthermore, six studies used some kind of clinical interview, either alone or together with some screening procedure (Avdagic et al., 2014; Bohlmeijer et al., 2011; Hancock et al., 2018; Livheim et al., 2015; Perry et al., 2019; Tamannaei et al., 2017).”
From Acceptance and commitment therapy versus cognitive behavioral therapy in the treatment of substance use disorder with incarcerated women (2014) · cites this paper as Avdagic et al., 2014
ACT has similar effects as CBT in the treatment of anxiety disorders and symptoms in adults.
“More recent studies have demonstrated that Accep tance and Commitment Therapy (ACT) has similar effects as CBT in the treatment of anxiety disorders and symptoms in adults”
From Which emotion regulation strategies are mediating the outcome of acceptance and commitment therapy compared to cognitive-behaviour therapy in the treatment of anxiety symptoms? (2025) · cites this paper as Avdagic et al., 2014
Statistics that don’t add up
Each reported p-value recomputed from its test statistic and degrees of freedom.
Statistic does not fit its p-value and effect size: F(2, 98) = 5.60, p = .003
MinorThe paper reports p = .003 here; recomputing from the test statistic and its degrees of freedom gives p = .005. The partial eta squared printed with it (ηp² = .109) corresponds to F ≈ 5.99 and p = .003, which fits the reported p-value and not the statistic: the statistic appears to be the misprint.
Reported p = .003 · recomputed p = .005
“F(2, 98) = 5.60, p = .003”
Inconsistent p-value: F(1, 49) = .94,p = .335
MinorThe paper reports p = .335 here; recomputing from the test statistic and its degrees of freedom gives p = .337. The check cannot tell whether the statistic or the p-value is the misprint.
Reported p = .335 · recomputed p = .337
“F(1, 49) = .94,p = .335”
Inconsistent p-value: F(2, 98) = 3.50, p = .038
MinorThe paper reports p = .038 here; recomputing from the test statistic and its degrees of freedom gives p = .034. The check cannot tell whether the statistic or the p-value is the misprint.
Reported p = .038 · recomputed p = .034
“F(2, 98) = 3.50, p = .038”
Inconsistent p-value: F(1, 37) = 4.13, p = .050
MinorThe paper reports p = .05 here; recomputing from the test statistic and its degrees of freedom gives p = .049. The check cannot tell whether the statistic or the p-value is the misprint.
Reported p = .05 · recomputed p = .049
“F(1, 37) = 4.13, p = .050”
Statistic does not fit its p-value and effect size: F(1, 49) = 1.51, p = .289
MinorThe paper reports p = .289 here; recomputing from the test statistic and its degrees of freedom gives p = .225. The partial eta squared printed with it (ηp² = .023) corresponds to F ≈ 1.15 and p = .288, which fits the reported p-value and not the statistic: the statistic appears to be the misprint.
Reported p = .289 · recomputed p = .225
“F(1, 49) = 1.51, p = .289”
Statistics recomputed
Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.
- Doesn’t add upF(1, 49) = 1.51reported p = .289 · recomputed p = .225
“F(1, 49) = 1.51, p = .289”
- Doesn’t add upF(2, 98) = 3.5reported p = .038 · recomputed p = .034
“F(2, 98) = 3.50, p = .038”
- Doesn’t add upF(2, 98) = 5.6reported p = .003 · recomputed p = .005
“F(2, 98) = 5.60, p = .003”
- Doesn’t add upF(1, 49) = 0.94reported p = .335 · recomputed p = .337
“F(1, 49) = .94,p = .335”
- Doesn’t add upF(1, 37) = 4.13reported p = .05 · recomputed p = .049
“F(1, 37) = 4.13, p = .050”
- ConsistentF(1, 36) = 59.9reported p < .001 · recomputed p < .001
“F(1, 36) = 59.90, p < .001”
- ConsistentF(1, 36) = 4.95reported p = .032 · recomputed p = .032
“F(1, 36) = 4.95, p = .032”
- ConsistentF(1, 36) = 3.64reported p = .064 · recomputed p = .064
“F(1, 36) = 3.64, p = .064”
- ConsistentF(1, 49) = 42.54reported p < .001 · recomputed p < .001
“F(1, 49) = 42.54,p < .001”
- ConsistentF(1, 49) = 3.97reported p = .052 · recomputed p = .052
“F(1, 49) = 3.97, p = .052”
- ConsistentF(1, 36) = 31.75reported p < .001 · recomputed p < .001
“F(1,36) = 31.75,p < .001”
- ConsistentF(1, 36) = 53.55reported p < .001 · recomputed p < .001
“F(1, 36) = 53.55,p < .001”
- ConsistentF(1, 36) = 64.68reported p < .001 · recomputed p < .001
“F(1, 36) = 64.68,p < .001”
- ConsistentF(1, 49) = 26.31reported p < .001 · recomputed p < .001
“F(1, 49) = 26.31,p < .001”
- ConsistentF(1, 49) = 39.65reported p < .001 · recomputed p < .001
“F(1, 49) = 39.65,p < .001”
- ConsistentF(1, 49) = 45.12reported p < .001 · recomputed p < .001
“F(1, 49) = 45.12,p < .001”
- ConsistentF(1, 32) = 10.71reported p = .003 · recomputed p = .003
“F(1, 32) = 10.71,p = .003”
- ConsistentF(1, 32) = 0.048reported p = .828 · recomputed p = .828
“F(1, 32) = .048,p = .828”
- ConsistentF(1, 32) = 0.803reported p = .377 · recomputed p = .377
“F(1, 32) = .803,p = .377”
- ConsistentF(1, 45) = 7.81reported p = .008 · recomputed p = .008
“F(1, 45) = 7.81, p = .008”
- ConsistentF(1, 45) = 0reported p = .985 · recomputed p = 1.000
“F(1, 45) = 0.00, p = .985”
- ConsistentF(1, 45) = 0.078reported p = .78 · recomputed p = .781
“F(1, 45) = .078,p = .78”
- ConsistentF(2, 98) = 24.96reported p = 0 · recomputed p < .001
“F(2,98) = 24.96,p = .000”
- ConsistentF(1, 49) = 4.93reported p = .031 · recomputed p = .031
“F(1, 49) = 4.93, p = .031”
- ConsistentF(1, 49) = 8.44reported p = .005 · recomputed p = .005
“F(1,49) = 8.44, p = .005”
- ConsistentF(2, 98) = 26.15reported p = 0 · recomputed p < .001
“F(2, 98) = 26.15,p = .000”
- ConsistentF(1, 49) = 2.85reported p = .098 · recomputed p = .098
“F(1, 49) = 2.85, p = .098”
- ConsistentF(1, 49) = 8.82reported p = .005 · recomputed p = .005
“F(1, 49) = 8.82, p = .005”
- ConsistentF(1, 36) = 30.63reported p < .001 · recomputed p < .001
“F(1, 36) = 30.63,p < .001”
- ConsistentF(1, 36) = 52.31reported p < .001 · recomputed p < .001
“F(1, 36) = 52.31,p < .001”
- ConsistentF(1, 36) = 3.85reported p = .057 · recomputed p = .058
“F(1, 36) = 3.85, p = .057”
- ConsistentF(1, 36) = 3.8reported p = .059 · recomputed p = .059
“F(1, 36) = 3.80, p = .059”
- ConsistentF(1, 36) = 3.95reported p = .055 · recomputed p = .055
“F(1, 36) = 3.95, p = .055”
- ConsistentF(1, 48) = 45.79reported p < .001 · recomputed p < .001
“F(1, 48) = 45.79,p < .001”
- ConsistentF(1, 36) = 25.39reported p < .001 · recomputed p < .001
“F(1, 36) = 25.39,p < .001”
- ConsistentF(1, 36) = 3.14reported p = .085 · recomputed p = .085
“F(1, 36) = 3.14, p = .085”
- ConsistentF(1, 36) = 1.73reported p = .197 · recomputed p = .197
“F(1, 36) = 1.73, p = .197”
- ConsistentF(1, 49) = 22.57reported p < .001 · recomputed p < .001
“F(1, 49) = 22.57, p < .001”
- ConsistentF(1, 49) = 3.37reported p = .073 · recomputed p = .072
“F(1, 49) = 3.37, p = .073”
- ConsistentF(1, 35) = 68.21reported p < .001 · recomputed p < .001
“F(1, 35) = 68.21,p < .001”
- ConsistentF(1, 35) = 0.44reported p = .511 · recomputed p = .511
“F(1, 35) = .440,p = .511”
- ConsistentF(1, 48) = 3.05reported p = .087 · recomputed p = .087
“F(1, 48) = 3.05, p = .087”
- ConsistentF(1, 48) = 0.21reported p = .651 · recomputed p = .649
“F(1, 48) = .21,p = .651”
- ConsistentF(1, 35) = 11.39reported p = .002 · recomputed p = .002
“F(1, 35) = 11.39,p = .002”
- ConsistentF(1, 35) = 0.882reported p = .354 · recomputed p = .354
“F(1, 35) = .882,p = .354”
- ConsistentF(1, 35) = 0.035reported p = .852 · recomputed p = .853
“F(1, 35) = .035,p = .852”
- ConsistentF(1, 49) = 12.14reported p = .001 · recomputed p = .001
“F(1, 49) = 12.14, p = .001”
- ConsistentF(1, 28) = 6.25reported p = .019 · recomputed p = .019
“F(1, 28) = 6.25, p = .019”
- ConsistentF(1, 28) = 8.92reported p = .006 · recomputed p = .006
“F(1, 28) = 8.92, p = .006”
- ConsistentF(1, 28) = 47.26reported p < .001 · recomputed p < .001
“F(1, 28) = 47.26,p < .001”
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Quality-of-life scores exceed the stated scale range
MinorThe measure is described as ranging from −6 to 6, but the reported baseline mean of 30.9 is outside that range. The scoring description and the tabulated scores cannot both be correct.
“These results are then multiplied for each domain, giving an average satisfaction level across domains with a range from -6 to 6.”
“| QOLI | ACT | 21 | 30.9 | 13.7 | 0.09 | .932 |”
ACT gender percentages do not match the counts
MinorIn the 25-person ACT group, 19 women represent 76%, not 72%; the six men represent 24%, not the displayed 28%.
Reported 72 · recomputed 76
“| Female | 19 (72.0) | 15 (57.7) | 1.92 | .166 | | Male | 6 (28.0) | 11 (42.3) | | |”
Medication percentages use incorrect group denominators
MinorThe table lists 13 medication users in the 26-person CBT group, which is 50%, not 52%. It also lists 13 nonusers in the 25-person ACT group as 50%, rather than 52%.
Reported 52 · recomputed 50
“| Current medication n (%) | | | | | | Yes | 12 (48.0) | 13 (52.0) | 0.02 | .868 | | No | 13 (50.0) | 13 (50.0) | | |”
Previous-treatment prevalence differs from the baseline table
MinorThe baseline table records 18 ACT and 15 CBT participants with previous treatment, or 33 of 51 (64.7%). The narrative reports 62.7%.
“A majority of individuals taking part in the study (62.7%) claimed to have had previous psychological treatment.”
“| Previous treatment n (%) | | | | | | Yes | 18 (72.0) | 15 (57.7) | 1.14 | .285 |”
IUS tests use different denominator degrees of freedom
MinorThe pre-to-post IUS main-effect and group-by-time tests are presented as part of the same mixed-factorial analysis, but their denominator degrees of freedom are 35 and 37, respectively.
“Time × group interaction approached significance, F(1, 37) = 4.13, p = .050,partial η 2 = .106”
“The results demonstrated a significant main effect of time, F(1, 35) = 68.21,p < .001,partial η 2 = .661”
Therapy dropout rate includes questionnaire nonreturns
MinorNine of the 51 participants discontinued therapy, a rate of 17.6%, not 25.5%. The reported percentage instead corresponds to all 13 participants without post-assessment data, including four who completed treatment.
Reported 25.5 · recomputed 17.647059
“While the number of people who dropped out of therapy across both interventions was high (25.5%),this attrition rate is similar to other studies, such as Arch et al. (2012).”
Pre-treatment participant count does not follow from the recruitment figures
MinorThe text says 60 people agreed to group treatment and 10 withdrew before it began, leaving 50 rather than the reported 51 participants.
Reported 51 · recomputed 50
“The remaining 51 participants (34 females and 17 males), aged between 19 and 69 years (M = 36.17,SD = 13.1), were randomly allocated either to the ACT group (n = 25) or CBT group (n = 26).”
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“These results are comparable to other randomised controlled trials of ACT and CBT, such as Forman, Herbert, Moitra, Yeomans, and Geller (2007) and Arch et al. (2012).”
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“Currently, apart from a pilot study investigating ACT and CBT for GAD in older individuals (Wetherell et al., 2011), there are no published, randomised controlled trials of ACT and CBT focusing exclusively on GAD.”
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“(2014) 37 39 DASS-A Passive WL No Differentiation Avdagic et al. (2014) 19 19 DASS-A Active CBT Secondary”
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A meta-analysis of dropout rates in acceptance and commitment therapy
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“For instance, Avdagic et al. (2014) found continued improvement in IU between post-assessment and a follow-up assessment for individuals who received CBT (Avdagic et al., 2014).”
Acceptance and Commitment Training in the workplace
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Mechanisms of the acceptance and commitment therapy: A meta-analytic structural equation model
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“Therapists in both groups were clinical psychologists, with equivalent backgrounds and specializations in CBT, working for the university hospital.”
MethodInfluentialLawrence, V., Kimona, K., Howard, R. J., Serfaty, M. A., Wetherell, J. L., Livingston, G., Wilkinson, P., Walters, K., Jones, R., Wuthrich, V. M., et al. (2019) · Age and Ageing · doi:10.1093/ageing/afz082 · Cited by 19 · see citing works
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Internet-delivered acceptance-based behavior therapy for generalized anxiety disorder: A pilot study
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“, 2008), with a study indicating that ACT can be as effective as CBT (Avdagic et al., 2014).”
BackgroundKrafft, J., Ong, C. W., Davis, C. H., Petersen, J. M., Levin, M. E., & Twohig, M. P. (2022) · Cognitive and Behavioral Practice · doi:10.1016/j.cbpra.2021.05.008 · Cited by 14 · see citing works
“participants reported significant changes in worry and improvements in quality of life (Avdagic et al., 2014).”
Mansouri, A., & Fayazbakhsh, E. (2019) · International Archives of Health Sciences · doi:10.4103/iahs.iahs_52_18 · Cited by 14 · see citing works
“Likewise; Avdagic et al.[24] reported that this therapeutic approach can be effective way for reducing anxiety, EA, and IU in individuals with GAD.”
BackgroundResultInfluentialMindfulness- and Acceptance-Based Interventions in the Treatment of Anxiety Disorders
Vøllestad, J. (2015) · Springer eBooks · doi:10.1007/978-3-319-22255-4_6 · Cited by 11 · see citing works
Case Study of Acceptance and Commitment Therapy and Functional Analysis for Emetophobia
Bogusch, L. M., Moeller, M. T., & O’Brien, W. H. (2018) · Clinical Case Studies · doi:10.1177/1534650118754304 · Cited by 10 · see citing works
Burley, J., & McAloon, J. (2024) · Journal of Contextual Behavioral Science · doi:10.1016/j.jcbs.2023.11.003 · Cited by 13 · see citing works
Ong, C. W., Skolnik, A. M., Johnson, H. M., Krafft, J., Loew, S., Kurtz, A., & Lee, E. B. (2024) · Clinical Psychology Review · doi:10.1016/j.cpr.2024.102446 · Cited by 7 · see citing works
Wolenski, R. A., Vaclavik, D., Rey, Y., & Pettit, J. W. (2021) · International Journal of Cognitive Therapy · doi:10.1007/s41811-021-00119-5 · Cited by 8 · see citing works
Murray Sidman's contributions to clinical behavior analysis
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Sánchez Escamilla, F., Redondo Delgado, M., Herrero, L., & Pérez Nieto, M. Á. (2024) · Current Psychology · doi:10.1007/s12144-023-05001-5 · Cited by 6 · see citing works
“Moreover, it should be remembered that meta-beliefs on the dangers of a lack of cognitive self-control increase dysfunctional cognitive control strategies in GAD and OCD (Pérez Nieto et al., 2010), whereby a treatment based on altering these meta-beliefs may alleviate the symptoms.”
InfluentialDindo, L., Fiedorowicz, J. G., Boykin, D. M., Wooldridge, N., Myers, J., Ajibewa, T., Stroud, A., Kuwaye, D., Liu, Z., & Pierce, G. L. (2021) · Annals of Clinical Psychiatry · doi:10.12788/acp.0046 · Cited by 5 · see citing works
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“Only 6 studies (Agee, 2006; Avdagic et al., 2014; Giommi et al., 2021; Smith et al., 2008, 2018; Zettle, 2003) had active control groups, such as cognitive-behavioral therapy, cognitive-behavioral stress reduction, or progressive muscle relaxation; the majority had TAU (11) or waitlist (26) control…”
Probst, G., Vîslă, A., & Flückiger, C. (2022) · Journal of Anxiety Disorders · doi:10.1016/j.janxdis.2022.102635 · Cited by 6 · see citing works
Acceptance and Commitment Therapy
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Accepting the Challenge and Committing to the Future of Acceptance and Commitment Therapy Science
Borgogna, N. C., & Aita, S. L. (2025) · Psychiatric Clinics of North America · doi:10.1016/j.psc.2025.02.014 · Cited by 3 · see citing works
Figueiredo, D. V., Salvador, M. D. C., Rijo, D., & Vagos, P. (2025) · European Child & Adolescent Psychiatry · doi:10.1007/s00787-024-02608-2 · Cited by 2 · see citing works
Parlar‐Yazıcı, A., Norman, A., & Bacon, A. (2025) · Counselling and Psychotherapy Research · doi:10.1002/capr.12872 · Cited by 2 · see citing works
“Given the specific research findings in the literature showing the effectiveness of acceptance on stress and anxiety, this result might be expected (Avdagic et al., 2014 ; Heydari et al., 2018 ; Livheim et al., 2015 ).”
Johns, E. K., Kokokyi, S., Neufeld, D., Krysanski, V., & Meek, B. P. (2024) · Journal of Contextual Behavioral Science · doi:10.1016/j.jcbs.2024.100812 · Cited by 2 · see citing works
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The Psychological Treatment of Generalized Anxiety Disorder
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Salari, N., Heidarian, P., Hassani, R., Babajani, F., Abdolmaleki, A., & Mohammadi, M. (2024) · Journal of Affective Disorders Reports · doi:10.1016/j.jadr.2024.100847 · Cited by 1 · see citing works
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“Higher scores indicate greater psychological distress (Avdagic et al., 2014; Trindade et al., 2021).”
Solli DPS, N., & Vøllestad, J. (2018) · Scandinavian Psychologist · doi:10.15714/scandpsychol.5.e1 · Cited by 1 · see citing works
Mindfulness-Based Cognitive Therapy Self-Assessment Scale (MBCT-SAS)
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Psychotherapie der Angststörungen
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“In RCT-Studien konnten für ACT ähnlich hohe Effekte wie für klassische KVT gefunden werden [22, 23].”
BackgroundSchool-based Acceptance and Commitment Therapy for Adolescents with Anxiety
Petersen, J. M. (2021) · Digital Commons - USU (Utah State University) · doi:10.26076/a68d-353a · Cited by 1 · see citing works
“Furthermore, at post-intervention, 78.9% of the participants who received ACT attained reliable change as compared to only 47.4% of the CBT group—but there were no differences between groups at the 3-month follow-up (Avdagic & Boschen, 2014).”
MethodResultInfluentialIt’s not just an ACT: An evaluation of an acceptance and commitment therapy group for anxiety
Moore, L., Clarke, A., & Corr, R. (2018) · Clinical Psychology Forum · doi:10.53841/bpscpf.2018.1.302.38
Borthwick, C., Norton, A., Trenoska Basile, V., & Wootton, B. (2026) · British Journal of Clinical Psychology · doi:10.1111/bjc.70089
Ruhde, D. L. (2016) · OpenSIUC (Southern Illinois University Carbondale)
Cognitive Behavioral Therapies in the United States
Gerardi, N., & McGinn, L. K. (2022) · Springer eBooks · doi:10.1007/978-3-030-82555-3_33
Evidence-Based Treatments for Anxiety Disorders
Azab, M. (2022) · Springer eBooks · doi:10.1007/978-3-031-19362-0_5
Peckett, H., Arnold, T., Urbanek, M., & Miles, H. (2017) · Clinical Psychology Forum · doi:10.53841/bpscpf.2017.1.291.15
Woodruff‐Borden, J., Lee, A. M., & Gramszlo, C. (2018) · Wiley eBooks · doi:10.1002/9781394258970.ch9
الوزان, ب. أ. ع. (2023) · مجلة العلوم التربوية و الدراسات الإنسانية · doi:10.55074/hesj.vi35.898
Mindfulness-Based Cognitive Therapy Self-Assessment Scale (MBCT-SAS)
Prowse, P.-T., Nagel, T. M., & Meadows, G. N. (2025) · Springer eBooks · doi:10.1007/978-3-031-47219-0_72
Cinq conseils pour survivre dans un monde de plus en plus incertain
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5 tips for surviving in an increasingly uncertain world
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Jalali, A., Ghasemianrad, M., Khazaie, H., Jalali, R., Chavoshani, F., Khalili, M., & Kazeminia, M. (2026) · SN Comprehensive Clinical Medicine · doi:10.1007/s42399-025-02235-1
Gould, R. L., Callaghan, T., White, D., Wetherell, J. L., Bursnall, M., Bradburn, M., Wailoo, A., Serfaty, M. A., Graham, C. D., Howard, R. J., et al. (2026) · BMC Geriatrics · doi:10.1186/s12877-026-07094-6
“Although ACT and ACT-based approaches have been shown to be as effective as conventional CBT and applied relaxation for GAD in working age adults [11–13], less is known about its effectiveness in older people with GAD [14, 15].”
Acceptance and Commitment Therapy for Generalized Anxiety Disorder: A Narrative Review
Capel, L. K., Knudsen, F. M., Thomas, G., Levin, M. E., & Twohig, M. P. (2026) · Behavior Modification · doi:10.1177/01454455261449755
“Avdagic et al. (2014) evaluated group-based ACT compared to group-based CBT in 51 adults with diagnosed with GAD using the Anxiety Disorders Interview Schedule for DSM-IV.”
Gower, T., Styler, Z. R., & Litz, B. T. (2026) · Clinical Psychology Review · doi:10.1016/j.cpr.2026.102786
- Authors
- Avdagic, E., Morrissey, S. A., & Boschen, M. J.
- Affiliations
- Griffith University (AU)
- Corresponding author
- Morrissey, Shirley A.
- Venue
- Behaviour Change
- Publisher
- Cambridge University Press (CUP)
- Published
- 2014-05-21
- Volume
- 31
- Issue
- 2
- Pages
- 110-130
- ISSN
- 0813-4839 (ISSN-L)
- 2049-7768
- OpenAlex
- W2075053306
- Cited by
- 73
- References
- 56
- Citations by year
- 2026: 6 · 2025: 5 · 2024: 6 · 2023: 7 · 2022: 7 · 2021: 6 · 2020: 6 · 2019: 9 · 2018: 7 · 2017: 4 · 2016: 5 · 2015: 4
- FWCI
- 4.07
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Behaviour Change (publishedVersion)
- Griffith Research Online (submittedVersion)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Social Sciences › Psychology › Clinical Psychology › Child and Adolescent Psychosocial and Emotional Development
- Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
- Keywords
- generalized anxiety disorder, acceptance and commitment therapy, cognitive behavioral therapy, group therapy, treatment efficacy, maintenance therapy, worry, depression
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