Cited by 42COVID-19 and Mental HealthOptimism, Hope, and Well-beingAnxiety, Depression, Psychometrics, Treatment, Cognitive Processes

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

Open access
Mallett, Rebecca, Coyle, Clodagh, Kuang, Yingtu, Gillanders, David T.·2021·Journal of Contextual Behavioral Science

Abstract

Early findings suggest the COVID-19 pandemic and related containment measures negatively impact mental wellbeing. This study compared the contribution and relations of three factors to anxiety and wellbeing during the pandemic in June 2020. These factors were: i) Contextual factors (e.g. exposure to COVID-19, being a keyworker, feeling lonely); ii) Cognitive appraisals: perceived vulnerability to disease (PVD) and intolerance of uncertainty (IU); and iii) psychological flexibility (PF). 603 participants aged 18 or older completed an online survey of self-report measures. Hierarchical regression analyses demonstrated PVD, IU and PF predicted state anxiety, and IU and PF predicted mental wellbeing. Some, but not all of the contextual factors also predicted state anxiety and wellbeing. The findings support cognitive appraisal theories and the PF model, lending support to an acceptance and commitment therapy (ACT) approach to public health during pandemics. © 2021 Association for Contextual Behavioral Science

AI snapshot

Written from the paper’s full text.

TL;DR

A cross-sectional online survey of 603 adults in June 2020 examined how pandemic-related contextual factors, cognitive appraisals, and psychological flexibility related to state anxiety and mental wellbeing. Intolerance of uncertainty and psychological flexibility predicted both outcomes, while perceived vulnerability to disease predicted only state anxiety; psychological flexibility also weakened the indirect path from perceived vulnerability through intolerance of uncertainty.

Key findings

  • In hierarchical regressions, the final state anxiety model explained 48.7% of variance, with contextual factors adding 19.6% and psychological measures adding 11.6%; the final wellbeing model explained 46.5%, with contextual factors adding 28% and psychological measures adding 7%.
  • Intolerance of uncertainty predicted higher state anxiety (β = 0.237, p < .001) and lower wellbeing (β = −0.083, p < .05); perceived vulnerability to disease predicted higher state anxiety (β = 0.141, p < .001) but not wellbeing; psychological flexibility predicted lower anxiety (β = −0.134, p < .001) and higher wellbeing (β = 0.257, p < .001).
  • Contextual factors mattered: loneliness and disruption contributed to both outcomes, good social support contributed to wellbeing (β = 0.474, p < .01), self-isolation was linked to higher anxiety (M = 17.88 vs. 14.02, p = .001, d = .30), and keyworkers reported higher wellbeing than non-keyworkers (M = 22.01 vs. 20.84, p < .001, d = .33), contrary to the hypothesis.
  • Conditional process models showed perceived vulnerability had direct and indirect effects on anxiety via intolerance of uncertainty, and the indirect path was no longer significant at high psychological flexibility; a similar moderated mediation appeared for wellbeing, though the direct path from perceived vulnerability to wellbeing was not significant.

Methods

  • Cross-sectional anonymous online survey recruited through social media between 22 and 29 June 2020; 609 people completed it, and 603 were analyzed after exclusions. Participants were 18–82 years old, 80% female, and 79% from the UK.
  • Self-report measures covered COVID-19 contextual factors, social and increased loneliness, intolerance of uncertainty (IUS-12), perceived vulnerability to disease (PVDQ), psychological flexibility (CompACT), state anxiety (CALM), and mental wellbeing (SWEMWBS).
  • Analyses included correlations and t-tests, two hierarchical multiple regressions for anxiety and wellbeing, and conditional process analysis using PROCESS model 59 with 10,000 bootstrapped resamples to test moderated mediation.

Limitations

  • Stated by the authors: the cross-sectional design prevents causal conclusions; self-report measures may introduce bias; the convenience social media sample is unlikely to represent the wider public; few participants came from outside the UK and Ireland; the state anxiety measure may trade stability for context sensitivity; contextual factors were not standardized; and predictor/outcome selection relied on theory and prior research, so relationships could be reversed or bidirectional.
  • Evident from the text: the sample was predominantly female, younger, and UK-based, which further limits generalizability to other populations.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1016/j.jcbs.2021.09.003

Cites

92 of 92 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

51 of 96 cited sources checked · 31 supported · 4 flagged · accuracy not yet measured

  • Premisecitation

    Psychological flexibility has a moderating role between the psychological impacts of COVID-19 and mental health outcomes and wellbeing.

    “and a moderating role between the psychological impacts of COVID-19 and mental health outcomes and wellbeing (Chong et al., 2021; Crasta et al., 2020; Daks et al., 2020; Pakenham et al., 2020; Smith et al., 2020).”
    Quote in the paperSubstantial claim3 of 3 sources checked
    • cites Chong et al., 2021 source

      The Results and Discussion report that psychological flexibility mediated the relationship between COVID-19 illness perceptions and mental health in Hong Kong adults. They do not report the moderating role attributed to this study; mediation and moderation are different findings. The indexed passages provide section labels but no page numbers. (LLM, conf=0.86)

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    • cites Crasta et al., 2020 source

      The Results section on moderation (page unavailable) reports that psychological flexibility was not a significant moderator after accounting for psychological inflexibility. It was inflexibility that moderated the pathway from COVID-19 stressors through perceived burdensomeness to desire for death among parents; the paper does not establish moderation of mental health and wellbeing outcomes generally. (LLM, conf=0.90)

      Checked by a reasoning model — may be wrong.

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    • cites Daks et al., 2020 source

      The Results (Testing the path model; page unavailable) link parental psychological flexibility to healthier family functioning and indirectly to lower child distress during the pandemic. But the paper reports path associations, not that flexibility moderates the relationship between COVID-19’s psychological impacts and mental health or well-being outcomes. (LLM, conf=0.85)

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  • Premisecitation

    In the context of COVID-19, intolerance of uncertainty moderates the relationships between social isolation and anxiety and mental wellbeing.

    “In the context of COVID-19, IU has been found to moderate the relationships between social isolation and anxiety and mental wellbeing (Smith et al., 2020), to positively correlate with depression, anxiety and stress (Seco Ferreira et al., 2020), and to have both direct and mediated relationships with anxiety and wellbeing (Rettie & Daniels, 2020; Satici et al., 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Smith et al., 2020 source
    • Rests on an assumption: The COVID-19 pandemic has produced multiple stressors and a high degree of uncertainty.
  • Premisecitation

    Empirical evidence supports psychological flexibility as the mechanism of action of Acceptance and Commitment Therapy.

    “Empirical evidence supports PF as the mechanism of action of Acceptance and Commitment Therapy (ACT) (Doorley et al., 2020; Ruiz, 2010; Stockton et al., 2019; Trompetter et al., 2015).”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Doorley et al., 2020 source
    • cites Ruiz, 2010

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Stockton et al., 2019 source
  • Premisecitation

    During the COVID-19 pandemic, perceived vulnerability to disease is associated with general anxiety.

    “During the COVID-19 pandemic research has found associations between PVD and general anxiety (Makhanova & Shepherd, 2020) and a relationship between PVD and traumatic stress was mediated by COVID-19 worries and social isolation (Boyraz et al., 2020).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Makhanova & Shepherd, 2020 source

      The Study 1 Discussion reports that perceived vulnerability to disease was associated with higher overall anxiety about COVID-19. The Method specifies that the measure asked about COVID-19, so the paper does not establish an association with general anxiety beyond anxiety about the pandemic. (LLM, conf=0.84)

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  • Premisecitation

    Higher psychological flexibility is associated with positive psychological outcomes.

    “This is consistent with previous findings that higher PF is associated with positive psychological outcomes (Hayes et al., 2006) and a protective factor moderating the impact of daily stressors and threatening life events for depression, anxiety and life satisfaction (Gloster et al., 2017).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Hayes et al., 2006 source
  • Classified as probably not a substantial claim. 66
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    Premisecitation

    During the pandemic, psychological flexibility moderated the relationship between COVID-19 stressors and suicide risk.

    “During the pandemic PF has also been found to moderate the relationships between social isolation and depression and anxiety (Smith et al., 2020), COVID-19 risk factors and mental health difficulties (Pakenham et al., 2020), COVID-19 stressors and suicide risk (Crasta et al., 2020) and psychological distress within family systems (Daks et al., 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Crasta et al., 2020 source

      The Results section (‘Moderation of mediation path by psychological inflexibility’) says psychological flexibility did not emerge as a significant moderator after accounting for inflexibility. It was psychological inflexibility that moderated the indirect association between COVID-19 stressors and desire for death through perceived burdensomeness. No page number is available in our copy. (LLM, conf=0.90)

      Checked by a reasoning model — may be wrong.

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    Premisecitation

    Smith et al. conceptualised intolerance of uncertainty as a specific manifestation of psychological flexibility.

    “Smith et al. (2020) conceptualised IU as a specific manifestation of PF (difficulty accepting thoughts and feelings related to uncertainty and a behavioral orientation towards emotional control).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Smith et al. (2020) source

      The passage labeled Abstract conceptualizes intolerance of uncertainty as a specific instance of psychological *inflexibility*, not flexibility. It associates difficulty accepting uncertainty-related thoughts and feelings with intolerance of uncertainty, but assigns rigid emotional control to emotional suppression. (LLM, conf=0.88)

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    Premisecitation

    Social support is positively associated with mental wellbeing during pandemics.

    “Conversely, social support is positively associated with mental wellbeing during pandemics (Ko et al., 2006; Xiao et al., 2020).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Ko et al., 2006

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Xiao et al., 2020 source

      The Discussion (page unavailable) says social support reduces negative emotions and suggests that mutual support may reduce anxiety among people isolated during epidemics. However, the study measured social capital, which the Background distinguishes from social support; it does not establish a general association between social support and mental wellbeing during pandemics. (LLM, conf=0.83)

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    Premisecitation

    COVID-19 symptoms and disease exposure are associated with negative psychological outcomes including depression, anxiety, and stress.

    “Factors relating to COVID-19 symptoms and disease exposure are associated with negative psychological outcomes including depression, anxiety and stress (Moghanibashi-Mansourieh, 2020; Wang et al., 2020).”
    Quote in the paperNot a substantial claim2 of 2 sources checked
    • cites Moghanibashi-Mansourieh, 2020 source

      The Results report higher anxiety among people living in high-prevalence areas and those with a family member, relative, or friend with COVID-19. The paper does not report an association between COVID-19 symptoms or disease exposure and depression or stress; its Discussion mentions depression and stress when describing Wang et al. (2020). Page numbers are unavailable in our copy. (LLM, conf=0.87)

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    • cites Wang et al., 2020 source
  • Classified as probably not a substantial claim.

    Premisecitation

    The COVID-19 pandemic, through combined health risk, mass disruption, and isolation, has the potential to cause substantial negative mental health outcomes.

    “The combined health-risk, mass disruption and isolation caused by the COVID-19 pandemic has the potential for substantial negative mental health outcomes (Holmes et al., 2020; Kelly, 2020; Mucci et al., 2020).”
    Quote in the paperSubstantial claim3 of 3 sources checked
    • cites Holmes et al., 2020 source
    • cites Kelly, 2020 source
    • cites Mucci et al., 2020 source
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    Premisecitation

    Cross-sectional studies have reported associations between the COVID-19 pandemic and negative psychological outcomes such as anxiety, distress, depression, and post-traumatic stress.

    “Cross-sectional studies have reported associations between the COVID-19 pandemic and negative psychological outcomes including anxiety, distress, depression, and post-traumatic stress (Moghanibashi-Mansourieh, 2020; Rossi et al., 2020; Shevlin et al., 2020; Wang et al., 2020).”
    Quote in the paperNot a substantial claim3 of 3 sources checked
    • cites Moghanibashi-Mansourieh, 2020 source

      The Results and Discussion report an association between COVID-19 exposure or prevalence and anxiety in the Iranian survey. The Discussion also recounts another study’s findings on distress and depression, but this paper does not report post-traumatic stress as an outcome. It therefore supports only part of the outcome list attributed to it. (LLM, conf=0.88)

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    • cites Rossi et al., 2020 source
    • cites Shevlin et al., 2020 source
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    Premisecitation

    The 2002-2003 SARS outbreak had a lasting negative mental health impact on survivors, including elevated stress and psychological distress one year later and depression and sleep disruption over 18 months after infection.

    “A comparable event, the Severe Acute Respiratory Syndrome (SARS) outbreak of 2002–2003, had a lasting negative impact on the mental health of survivors, with elevated stress levels and psychological distress found one year after the outbreak (Lee et al., 2007) and depression and sleep disruption over 18 months post-infection (Moldofsky & Patcai, 2011).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Lee et al., 2007 source
    • cites Moldofsky & Patcai, 2011 source
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    Premisecitation

    Pandemic-related impact events, including trauma experienced by keyworkers, loss of income, and bereavement or inability to care for an unwell or dying loved one, affect mental wellbeing.

    “Additionally, pandemic-related experiences or ‘impact events’ impact mental wellbeing including trauma experienced by keyworkers (Lee et al., 2007; Wu et al., 2009), loss of income (Shevlin et al., 2020), and being bereaved or unable to care for a loved one who is unwell or dying (Vigo et al., 2020).”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Lee et al., 2007 source
    • cites Wu et al., 2009

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Shevlin et al., 2020 source
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    Premisecitation

    Feeling well-informed about the COVID-19 pandemic is associated with lower anxiety.

    “Whereas, feeling well-informed about the COVID-19 pandemic is associated with lower anxiety (Jungmann & Witthöft, 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Jungmann & Witthöft, 2020 source
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    Premisecitation

    Disruption to daily routine and future plans is associated with lower mental wellbeing in previous health crises and during the COVID-19 pandemic.

    “Disruption to daily routine and future plans were associated with lower mental wellbeing in previous health crises (Jeong et al., 2016; Mak et al., 2009; Mihashi et al., 2009) and during the COVID-19 pandemic (Williams et al., 2020).”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites Jeong et al., 2016 source

      The Introduction says hospital and school closures increased anxiety during the MERS outbreak, and the Results associate inadequate supplies during isolation with later anxiety and anger. These support a link between some disruptions to daily life and poorer mental health, but the paper does not establish an association involving disrupted future plans. The COVID-19 portion of the citing sentence is attributed to a different source. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
    • cites Mak et al., 2009 source

      The Discussion (Range of psychiatric disorders and functional outcome; page unavailable) reports poorer quality of life among SARS survivors and suggests that functional impairment and unemployment may have complicated their psychiatric difficulties. It does not establish an association between disruption to daily routine or future plans and lower mental wellbeing. The COVID-19 portion of the sentence is attributed to a different citation, not Mak et al. (LLM, conf=0.75)

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    • cites Mihashi et al., 2009 source
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    Premisecitation

    Longitudinal studies with pre-pandemic and during-pandemic data show decreases in wellbeing and increases in anxiety, mental distress, and psychopathological symptoms.

    “These findings are supported by longitudinal studies with pre- and during pandemic data showing decreases in wellbeing and increases in anxiety, mental distress and psychopathological symptoms (Kwong et al., 2020; Schäfer et al., 2020; Twenge & Joiner, 2020).”
    Quote in the paperNot a substantial claim1 of 3 sources checked
    • cites Kwong et al., 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Schäfer et al., 2020 source

      The Pre-to Post-Outbreak Change Using BLCS section (page unavailable) reports increased psychopathological symptoms in the high-stress group, supporting that part of the longitudinal claim. It also reports no overall increase and decreased symptoms in the low-stress group. The paper does not report pre-to-during-pandemic decreases in wellbeing or increases in anxiety or mental distress as separate outcomes. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites Twenge & Joiner, 2020 source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    Psychological flexibility is associated with greater wellbeing during the pandemic and protects against negative psychological impacts of the COVID-19 situation.

    “However, a number of studies have found psychological flexibility to be associated with greater wellbeing during the pandemic and to be protective against the negative psychological impacts of the COVID-19 situation (e.g. Chong et al., 2021; Gloster, Lamnisos et al., 2020; McCracken et al., 2021).”
    Quote in the paperSubstantial claim2 of 3 sources checked
    • cites Chong et al., 2021 source
    • cites Gloster, Lamnisos et al., 2020 source
    • cites McCracken et al., 2021 source
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    Premisecitation

    Social isolation and self-quarantine are associated with psychological distress.

    “Social isolation and self-quarantine have been associated with psychological distress (Boyraz et al., 2020; Brooks, 2020; Smith et al., 2020).”
    Quote in the paperNot a substantial claim3 of 3 sources checked
    • cites Boyraz et al., 2020 source

      The Introduction describes social isolation as a source of stress, anxiety and depressive symptoms, and the Discussion links greater social isolation to vulnerability to COVID-19-related traumatic stress. The Introduction also lists quarantine among containment measures that brought challenges and stressors, but it does not establish a distinct association between self-quarantine and psychological distress. (LLM, conf=0.82)

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    • cites Brooks, 2020 source
    • cites Smith et al., 2020 source

      The Abstract and Discussion report an association between social isolation and psychological distress during COVID-19. The paper discusses quarantine periods and stay-at-home orders, but the passages do not establish a separate association between self-quarantine and distress. (LLM, conf=0.84)

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    Study design and conductcitation

    The SWEMWBS has demonstrated good to excellent internal validity (α = 0.84).

    “Internal validity of the SWEMWBS has been demonstrated as good to excellent (α = 0.84; Fat et al., 2017).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Fat et al., 2017 source

      The Criterion validity section reports a Cronbach’s alpha of 0.84 for SWEMWBS, above the paper’s stated threshold for acceptable internal reliability. The cited result concerns internal consistency or reliability, not internal validity as the citing sentence says. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
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    Premisecitation

    Chong et al. found that psychological flexibility and prosociality mediated the relationship between illness perceptions toward COVID-19 and mental health, with psychological flexibility also directly affecting prosociality.

    “Chong et al. (2021) found PF and prosociality mediated the relationship between illness perceptions toward COVID-19 and mental health with PF additionally exerting a direct effect on prosociality.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Chong et al. (2021) source
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    Premisecitation

    During the pandemic, psychological flexibility moderated the relationship between social isolation and depression and anxiety.

    “During the pandemic PF has also been found to moderate the relationships between social isolation and depression and anxiety (Smith et al., 2020), COVID-19 risk factors and mental health difficulties (Pakenham et al., 2020), COVID-19 stressors and suicide risk (Crasta et al., 2020) and psychological distress within family systems (Daks et al., 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Smith et al., 2020 source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    A large body of research supports an association between psychological flexibility and mental wellbeing, and between psychological inflexibility and depression and anxiety.

    “A large body of research supports the association of PF with mental wellbeing, and the association of psychological inflexibility with psychological difficulties including depression and anxiety (Doorley et al., 2020; Kashdan & Rottenberg, 2010).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites Doorley et al., 2020 source
    • cites Kashdan & Rottenberg, 2010 source
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    Study design and conductcitation

    The IUS-12 has excellent internal consistency for the full scale (α = 0.93) and good internal consistency for prospective IU (α = 0.89) and inhibitory IU (α = 0.89).

    “The IUS-12 has been found to have excellent internal consistency of α = 0.93 for the full scale and good internal consistency for subscale scores α = 0.89 (prospective IU) and α = 0.89 (inhibitory IU) (Carleton et al., 2013).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Carleton et al., 2013 source

      The IUS-12 section reports internal consistency in the current sample of α = .93 for the total score and α = .89 for prospective IU. It reports α = .88, not .89, for inhibitory IU; the figures also describe this study’s sample rather than the scale universally. (LLM, conf=0.94)

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    Premisecitation

    The relationship between perceived vulnerability to disease and traumatic stress is mediated by COVID-19 worries and social isolation.

    “During the COVID-19 pandemic research has found associations between PVD and general anxiety (Makhanova & Shepherd, 2020) and a relationship between PVD and traumatic stress was mediated by COVID-19 worries and social isolation (Boyraz et al., 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Boyraz et al., 2020 source
  • Classified as probably not a substantial claim.

    Premisecitation

    During the pandemic, psychological flexibility moderated the relationship between COVID-19 risk factors and mental health difficulties.

    “During the pandemic PF has also been found to moderate the relationships between social isolation and depression and anxiety (Smith et al., 2020), COVID-19 risk factors and mental health difficulties (Pakenham et al., 2020), COVID-19 stressors and suicide risk (Crasta et al., 2020) and psychological distress within family systems (Daks et al., 2020).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Pakenham et al., 2020 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    During the pandemic, psychological flexibility moderated psychological distress within family systems.

    “During the pandemic PF has also been found to moderate the relationships between social isolation and depression and anxiety (Smith et al., 2020), COVID-19 risk factors and mental health difficulties (Pakenham et al., 2020), COVID-19 stressors and suicide risk (Crasta et al., 2020) and psychological distress within family systems (Daks et al., 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Daks et al., 2020 source

      The Results (Correlations among study variables; page unavailable) link parental psychological flexibility with parent depressive symptoms, while the Discussion (Implications; page unavailable) describes an indirect path from flexibility through lower family discord to lower child distress. The paper reports associations and path analyses, not a finding that flexibility moderated a relationship involving psychological distress. (LLM, conf=0.84)

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    Premisecitation

    During the pandemic, psychological flexibility predicted wellbeing, stress, depression, and affect.

    “Supporting this, PF was found to predict wellbeing, stress, depression and affect during the pandemic (Dawson & Golijani-Moghaddam, 2020; Gloster, Lamnisos et al., 2020).”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites Dawson & Golijani-Moghaddam, 2020 source

      The Results (Regression analyses; page unavailable) report that psychological flexibility predicted wellbeing and distress outcomes during the pandemic, including depression and COVID-19-specific distress. The paper does not identify affect or a separate stress measure among those outcomes, so the full list attributed to it is not supported. (LLM, conf=0.84)

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    • cites Gloster, Lamnisos et al., 2020 source
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    Study design and conductcitation

    The CompACT has excellent internal consistency for all items (α = 0.91), and good to excellent internal consistency for openness to experience (α = .90), behavioral awareness (α = 0.87), and valued action (α = 0.90).

    “The CompACT has demonstrated excellent internal consistency for all items α = 0.91, and good to excellent internal consistency for each of the subscales, openness to experience α = .90; behavioral awareness α = 0.87; and valued action α = 0.90 (Francis et al., 2016).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Francis et al., 2016 source

      Table 4 (p. 72) reports high internal consistency for the three CompACT factors, with Cronbach’s α of .91, .91, and .87. The cited sentence matches the .87 value for the awareness factor, but gives .90 rather than .91 for the other two and uses different subscale names. Section 3.5 (pp. 73–74) reports an average item-total correlation of .31 for the full measure, not the claimed total-scale α of .91. (LLM, conf=0.89)

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    Premisecitation

    A web-based self-help programme for college students had positive outcomes on a range of psychological difficulties and positive mental health.

    “and a web-based self-help programme for college students was found to have positive outcomes on a range of psychological difficulties and positive mental health (Levin, Haeger, et al., 2017).”
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    • cites Levin, Haeger, et al., 2017 source
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    Premisecitation

    ACT workshops for staff in a special education setting influenced factors affecting depression, stress, and burnout.

    “For example, ACT workshops for staff in a special education setting were found to influence factors affecting depression, stress, and burnout (Biglan et al., 2013)”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Biglan et al., 2013 source
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    Premisecitation

    Other studies found higher anxiety in younger age groups during the pandemic.

    “Other studies have also found higher anxiety in younger age groups during the pandemic (Fancourt et al., 2020; Rossi et al., 2020).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Fancourt et al., 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Rossi et al., 2020 source
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    Premisecitation

    The health threat from COVID-19 increases with age.

    “given the health threat from COVID-19 increases with age (Docherty et al., 2020)”
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    • cites Docherty et al., 2020 source
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    Premisecitation

    Older people experience better emotion regulation than younger adults.

    “that show older people experience better emotion regulation than younger adults (e.g. Carstensen et al., 2011).”
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    • cites Carstensen et al., 2011 source
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    Premisecitation

    An 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).”
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    • cites Avdagic et al., 2014 source
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    Premisecitation

    Previous studies found a similar magnitude of correlation between psychological flexibility and intolerance of uncertainty as reported in this study.

    “Previous studies have found a similar magnitude of correlation between PF and IU as reported in this study (r = 0.55 - 0.65, Smith et al., 2020; Stevens et al., 2018).”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites Smith et al., 2020 source
    • cites Stevens et al., 2018 source
  • May combine two claims.

    Findingown data

    Adding CompACT, PVDQ and IUS-12 in Step 3 significantly improved the state anxiety model, with the final model accounting for 48.7% of variance and an additional 11.6%.

    “After entry of the CompACT, PVDQ and IUS-12 measures in Step 3, the final model accounted for 48.7% of the variance in state anxiety, significantly improving the model and accounting for an additional 11.6% of the variance.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Adding CompACT, PVDQ and IUS-12 in Step 3 significantly improved the wellbeing model, with the final model accounting for 46.5% of variance and an additional 7%.

    “After entry of CompACT, PVDQ and IUS-12 measures in Step 3, the final model accounted for 46.5% of the variance, significantly improving the model and accounting for an additional 7% of the variance in mental wellbeing.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Adding COVID-19 contextual factors in Step 2 significantly improved the state anxiety model and accounted for an additional 19.6% of variance.

    “The addition of COVID-19 contextual factors in Step 2 significantly improved the model, accounting for an additional 19.6% of the variance.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The overall magnitude of the contextual correlations was relatively weak, except for good social support and increased loneliness.

    “However, the overall magnitude of these correlations was relatively weak, with the exception of good social support and increased loneliness.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Adding COVID-19 contextual factors in Step 2 significantly improved the wellbeing model and accounted for an additional 28% of variance.

    “The addition of the COVID-19 contextual factors in Step 2 significantly improved the model, accounting for an additional 28% of the variance.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    Age had a small positive correlation with mental wellbeing.

    “and a small positive correlation with mental wellbeing (r = 0.26, p < .001)”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Cognitive appraisals were significantly associated with state anxiety and to some extent mental wellbeing.

    “Cognitive appraisals were found to be significantly associated with state anxiety and to some extent mental wellbeing.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The moderation of the mediation effects by psychological flexibility was significant but relatively weak.

    “The moderation of those effects by PF was significant, but was a relatively weak effect.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The same pattern of moderated mediation occurred for wellbeing, though the direct path from perceived vulnerability to disease to wellbeing was not significant.

    “Panel B shows the same pattern of moderated mediation for the outcome of wellbeing, though the direct path from PVD to wellbeing was not significant in this model.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The conditional process models supported the hypotheses that the impact of perceived vulnerability to disease on state anxiety and wellbeing is mediated by intolerance of uncertainty and buffered at high psychological flexibility.

    “The conditional process models supported the hypotheses that the impact of PVD on state anxiety and wellbeing would be mediated by IU, and that this would be buffered at high levels of PF.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Biased cognitive appraisals of uncertainty predicted both anxiety and wellbeing, whereas biased appraisals relating to threat of infection predicted only state anxiety.

    “Biased cognitive appraisals of uncertainty predicted both anxiety and wellbeing, whereas biased cognitive appraisals relating to the threat of infection predicted only state anxiety.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Cognitive theories of emotions, stress, and coping suggest that contextual factors alone do not account for the pandemic's impact on mental wellbeing; individual differences in cognitive appraisals also influence it.

    “Cognitive theories of emotions, stress and coping (Clark & Beck, 2010; Smith & Lazarus, 1993), suggest that contextual factors alone will not account for the impact of the pandemic on mental wellbeing, individual differences in cognitive appraisals will also have an influence.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites Clark & Beck, 2010

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Smith & Lazarus, 1993 source
  • May combine two claims.

    Premisecitation

    In the context of COVID-19, intolerance of uncertainty positively correlates with depression, anxiety, and stress.

    “In the context of COVID-19, IU has been found to moderate the relationships between social isolation and anxiety and mental wellbeing (Smith et al., 2020), to positively correlate with depression, anxiety and stress (Seco Ferreira et al., 2020), and to have both direct and mediated relationships with anxiety and wellbeing (Rettie & Daniels, 2020; Satici et al., 2020).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Seco Ferreira et al., 2020 source
    • Rests on an assumption: The COVID-19 pandemic has produced multiple stressors and a high degree of uncertainty.
  • May combine two claims.

    Study design and conductown data

    The regression assumptions of normality, linearity, multicollinearity and homoscedasticity were met.

    “All assumptions of normality, linearity, multicollinearity and homoscedasticity were met.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    In the context of COVID-19, intolerance of uncertainty has both direct and mediated relationships with anxiety and wellbeing.

    “In the context of COVID-19, IU has been found to moderate the relationships between social isolation and anxiety and mental wellbeing (Smith et al., 2020), to positively correlate with depression, anxiety and stress (Seco Ferreira et al., 2020), and to have both direct and mediated relationships with anxiety and wellbeing (Rettie & Daniels, 2020; Satici et al., 2020).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites Rettie & Daniels, 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Satici et al., 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • Rests on an assumption: The COVID-19 pandemic has produced multiple stressors and a high degree of uncertainty.
  • Classified as probably not a substantial claim.

    Premisecitation

    In an H1N1 influenza outbreak, higher perceived vulnerability to disease was associated with anxiety.

    “In the context of an H1N1 influenza outbreak, Wheaton et al. (2012) found that higher PVD, was associated with anxiety.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Wheaton et al. (2012) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    In the present sample, the SWEMWBS had α = 0.84.

    “For this sample the SWEMWBS had α = 0.84.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    In the present sample, the IUS-12 total score had α = 0.92, with subscale α = 0.86 for prospective IU and α = 0.88 for inhibitory IU.

    “For this sample the full scale had α = 0.92 and subscale scores α = 0.86 (prospective IU) and α = 0.88 (inhibitory IU).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    One participant was excluded for selecting the lowest response to every item, suggestive of non-attentive responding.

    “One participant was excluded for selecting the lowest response to every item, suggestive of a non-attentive responder.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    A review including 20 meta-analyses, 133 studies, and 12,477 participants found Acceptance and Commitment Therapy efficacious for all conditions examined, including anxiety.

    “Further, a review including 20 meta-analyses, 133 studies, and 12,477 participants found ACT to be efficacious for all conditions examined, including anxiety (Gloster et al., 2020).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Gloster et al., 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Classified as probably not a substantial claim.

    Premisecitation

    Psychological flexibility has a protective moderating effect on psychological outcomes of daily stressors and threatening life events.

    “A meta-analysis of 63 studies found significant relationships between psychological inflexibility and anxiety (Bluett et al., 2014) and a protective moderating effect of PF has been found for psychological outcomes of daily stressors and threatening life events (Gloster et al., 2017).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Gloster et al., 2017 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    A minimum of 258 participants was required, based on Green's (1991) guide, an expected medium effect size, 26 predictor variables, power of .80, and α = .05.

    “Using Green's (1991) guide to estimating required sample sizes for regression analysis, an expected medium effect size, 26 predictor variables and a power of .80 (α = .05) a minimum of 258 participants were required.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Green's (1991) source
  • May combine two claims.

    Study design and conductown data

    Missing data for five participants were classed as missing completely at random by Little's MCAR test, and excluding these cases was not seen to introduce bias.

    “Missing data for five participants was classed as missing completely at random (MCAR) using Little's MCAR test (χ2 = 109.608, df = 89, p = .068). Being MCAR and less than 1% of the sample from a large data set, exclusion of these cases was not seen to introduce bias (Tabachnick & Fidell, 2014).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Tabachnick & Fidell, 2014

      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 conductown data

    In the present sample, the PVDQ total score had α = 0.80, with subscale α = 0.81 for Perceived Infectability and α = 0.88 for Germ Aversion.

    “For this sample, all items had α = 0.80 and the subscales had α = 0.81 (Perceived Infectability) and α = 0.88 (Germ Aversion).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    A meta-analysis of 63 studies found significant relationships between psychological inflexibility and anxiety.

    “A meta-analysis of 63 studies found significant relationships between psychological inflexibility and anxiety (Bluett et al., 2014) and a protective moderating effect of PF has been found for psychological outcomes of daily stressors and threatening life events (Gloster et al., 2017).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Bluett et al., 2014 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    In the present sample, the CompACT total score had α = 0.89, with subscale α = 0.82 for openness to experience, α = 0.82 for behavioral awareness, and α = 0.88 for valued action.

    “For this sample, all items had α = 0.89 and the subscales had α = 0.82 (openness to experience), α = 0.82 (behavioral awareness) and α = 0.88 (valued action).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductcitation

    The PVDQ has good internal consistency for all items (α = 0.82), α = 0.87 for Perceived Infectability, and adequate internal consistency for Germ Aversion (α = 0.74).

    “The PVDQ has demonstrated good internal consistency α = 0.82 for all items and the subscale Perceived Infectability subscale (α = 0.87), and adequate internal consistency for the Germ Aversion subscale (α = 0.74) (Duncan et al., 2009).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Duncan et al., 2009 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    A review of 66 component studies found significant positive effect sizes for psychological flexibility treatment elements and positive outcomes, with larger effect sizes for theoretically specified outcomes.

    “Addressing mechanisms for change in ACT, a review of 66 component studies found significant positive effect sizes for PF treatment elements and positive outcomes, with larger effect sizes for theoretically specified outcomes (Levin et al., 2012).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Levin et al., 2012 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductown data

    In the present sample, the CALM had α = 0.96.

    “For this sample CALM showed excellent internal reliability with α = 0.96.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Study design and conductcitation

    The CALM showed strong concurrent validity with the state dimension of the State-Trait Anxiety Inventory (r = 0.90, p = .001), indicating it can accurately measure state anxiety.

    “The CALM has strong concurrent validity (r = 0.90, p = .001) with the state dimension of the validated State-Trait Anxiety Inventory (STAI; Spielberger et al., 1983), suggesting CALM can accurately measure state anxiety.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Spielberger et al., 1983

      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).

    Premisecitation

    Psychological flexibility processes such as cognitive defusion and acceptance are applied to coping with threat-related thoughts.

    “Arch and Craske (2008) describe how PF processes (cognitive defusion, acceptance) are applied to coping with threat-related thoughts.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Arch and Craske (2008) source
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing). May combine two claims.

    Study design and conductreasoning

    The findings remain tentative and need replication in a more randomly selected sample.

    “Therefore, the findings remain tentative and need replication in a more randomly selected sample.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data

    Intolerance of uncertainty has broader psychological implications than perceived vulnerability to disease because PVD predicted only state anxiety while IU predicted both anxiety and wellbeing.

    “That PVD predicted only state anxiety, and IU predicted both anxiety and wellbeing suggests IU has broader psychological implications than PVD.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationcitation

    These features drive rigid rule following and control-oriented behaviors characteristic of psychological inflexibility.

    “These features drive rigid rule following and behaviors oriented at control, characteristic of psychological inflexibility.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    ACT training for people with mild-to-moderate depression and anxiety in a non-clinical sample had positive outcomes for mental health and wellbeing.

    “Further, ACT training for people with mild-to-moderate depression and anxiety in a non-clinical sample had positive outcomes for mental health and wellbeing (Fledderus et al., 2012, 2013).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Fledderus et al., 2012, 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.

    Premisecitation

    The threat of rapid societal change during the pandemic has led to higher anxiety in younger people, who may feel more vulnerable due to less housing and financial security.

    “Kwong et al. (2020) suggest the threat of rapid change in society during the pandemic has led to higher anxiety levels in younger people, who may feel more vulnerable to this change as typically have less housing and financial security.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Kwong et al. (2020)

      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 conductcitation

    All cases had Cook's distance less than 1 and leverage and Mahalanobis distances within acceptable ranges.

    “All cases had Cook's distance less than 1 and leverage values and Mahalanobis distances within the acceptable range (Field, 2018).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Field, 2018

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Study design and conductnone given

    Few participants were recruited from outside the UK and Ireland, limiting conclusions about country of residence.

    “Additionally, few participants were recruited from outside the UK and Ireland, limiting conclusions about country of residence.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Study design and conductnone given

    Anonymity may have mitigated perceived social desirability bias.

    “However, anonymity may have mitigated against perceived social desirability bias.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    Self-report measures may have introduced subjective bias affecting accuracy and reliability.

    “The cross-sectional study design prevented causal inferences being made and self-report measures may have introduced subjective bias affecting accuracy and reliability.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductcitation

    Variance inflation factor and tolerance statistics were within accepted ranges.

    “Variance inflation factor (VIF) and tolerance statistics were within accepted ranges (Field, 2018).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Field, 2018

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationown data

    The current study supports previous psychological flexibility findings through replication and extends them by contrasting variables to establish relative associations with anxiety and wellbeing.

    “The current study supports these findings through replication and extends them by contrasting these variables with other predictors to establish their relative associations with anxiety and wellbeing.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    The age-anxiety finding provides evidence for stressors beyond health threat, suggesting containment measures are associated with increased anxiety.

    “We suggest these findings provide evidence for stressors beyond a threat to health, suggesting containment measures themselves are also associated with increased anxiety.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationown data

    The mediation effects were relatively strong based on the beta values shown on the paths.

    “The mediation effects are relatively strong, based on the beta values shown on the paths.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Merwin et al. described intolerance of uncertainty of bodily functions and appetite as a core feature in their psychological flexibility conceptualization of Anorexia Nervosa.

    “Merwin et al. (2011) further described intolerance of the uncertainty of bodily functions and appetite as a core feature in their PF conceptualization of Anorexia Nervosa.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Merwin et al. (2011) source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Psychological flexibility is a protective factor moderating the impact of daily stressors and threatening life events for depression, anxiety and life satisfaction.

    “This is consistent with previous findings that higher PF is associated with positive psychological outcomes (Hayes et al., 2006) and a protective factor moderating the impact of daily stressors and threatening life events for depression, anxiety and life satisfaction (Gloster et al., 2017).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Gloster et al., 2017 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Anxiety is the outcome of a threat appraisal where threat is perceived alongside an inability to cope with it.

    “Cognitive accounts describe how anxiety is the outcome of a threat appraisal where threat is perceived alongside an inability to cope with it (Clark & Beck, 2010; Smith & Lazarus, 1993).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites Clark & Beck, 2010

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Smith & Lazarus, 1993 source
  • May combine two claims.

    Interpretationcitation

    Psychological flexibility's ability to predict mental wellbeing may explain its association with lower anxiety because negative affectivity is recognized as a vulnerability to anxiety.

    “PF's ability to predict mental wellbeing may also explain its association with lower anxiety as negative affectivity is recognized as a vulnerability to anxiety (Clark & Beck, 2010).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Clark & Beck, 2010

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S4 (based).

    Study design and conductnone given

    Use of social media for recruitment of a convenience sample is unlikely to be representative of the public more widely.

    “The use of social media for recruitment of a convenience sample means it is unlikely to be representative of the public more widely.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    Some CompACT items are suggestive of the prospective anxiety construct in intolerance of uncertainty.

    “Furthermore, some items from the CompACT such as “I find it difficult to stay focussed on what's happening in the present” are suggestive of the prospective anxiety construct in IU.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    Contextual factors were not standardized measures but were face valid and designed to capture likely influences on wellbeing and anxiety.

    “The contextual factors were not standardized measures, but were face valid, designed to capture aspects of the context that were considered likely to influence wellbeing and anxiety.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable).

    Interpretationreasoning

    ACT and its emphasis on psychological flexibility could be a useful lens to develop large-scale interventions to support mental wellbeing during public health crises.

    “the transdiagnostic approach of ACT and its emphasis on psychological flexibility suggest it could be a useful lens to develop large-scale interventions to support mental wellbeing during public health crises.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    Selection of predictor and outcome variables relied on logical and theoretical reasoning and previous research.

    “Given the uniqueness of the COVID-19 situation, selection of predictor and outcome variables relied on logical and theoretical reasoning as well as previous research.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Study design and conductown data

    Despite limitations, the state anxiety and wellbeing models were both significant and a broad range of predictor variables were investigated.

    “Despite these limitations, the model predicting state anxiety and the model predicting wellbeing were both significant and a broad range of predictor variables covering both contextual and psychological factors were investigated.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Study design and conductnone given

    People may be less likely to complete an online survey when highly anxious or complete it when experiencing uncharacteristically elevated anxiety, potentially over- or underestimating sample anxiety.

    “For example, people may be less likely to complete an online survey when feeling highly anxious or alternatively complete the survey when experiencing uncharacteristically elevated anxiety symptoms. This may lead to either an over or under estimate of the level of anxiety in the sample.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    Observed relationships may in practice be reversed or bidirectional.

    “Therefore, observed relationships may in practice be reversed or bidirectional.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    Use of a current-state anxiety measure may have gained sensitivity to context at the expense of stability.

    “A state measure of anxiety was chosen to capture sensitivity to context, in comparison to trait-based measures, this sensitivity may however have been gained at the expense of stability.”
    Quote in the paperNot a substantial claim
87 of 87
  • The paper relies on this without support.

    No prior study has combined the full set of contextual factors considered here with intolerance of uncertainty, perceived vulnerability to disease, and psychological flexibility.

    “To date, no study has brought together the full array of contextual factors being considered here alongside the three psychological factors IU, PVD and PF.”
  • The paper relies on this without support.

    The COVID-19 pandemic has produced multiple stressors and a high degree of uncertainty.

    “COVID-19 has given rise to multiple stressors and a high degree of uncertainty.”
2 of 2

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Authors
Mallett, R., Coyle, C., Kuang, Y., & Gillanders, D. T.
Affiliations
University of Edinburgh (GB)
Corresponding author
Gillanders, David T.
Venue
Journal of Contextual Behavioral Science
Publisher
Elsevier BV
Published
2021-10
Volume
22
Pages
52-62
ISSN
2212-1447 (ISSN-L)
OpenAlex
W3201904649
Cited by
42
References
100
Citations by year
2026: 4 · 2025: 3 · 2024: 8 · 2023: 17 · 2022: 9
FWCI
5.05
Type
journal article
Language
en
Open access
Locations
  • Journal of Contextual Behavioral Science (publishedVersion)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (submittedVersion)
  • PubMed Central (submittedVersion)
Topics
  • Social Sciences › Psychology › Clinical Psychology › COVID-19 and Mental Health
  • Social Sciences › Psychology › Applied Psychology › Optimism, Hope, and Well-being
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
Keywords
COVID-19 pandemic, intolerance of uncertainty, perceived vulnerability to disease, psychological flexibility, state anxiety, psychological well-being, cognitive appraisal, acceptance and commitment therapy

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read under definition version 3 (extract-v3) on 2026-09-28.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-09-28.

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