Psychological flexibility in mild traumatic brain injury: an evaluation of measures
Abstract
Primary objective In this study, we examined the psychometric properties of measures of psychological flexibility in a mild traumatic brain injury (mTBI) sample.Method and Procedures Adults who sustained a mTBI (n = 112) completed the Acceptance and Action Questionnaire – Acquired Brain Injury reactive avoidance subscale (AAQ-ABI (RA). Exploratory factor analysis and Rasch analysis were conducted to evaluate the facture structure, dimensionality, and differential item functioning. Construct validity was determined by correlating the AAQ-ABI (RA) with the Acceptance and Action Questionnaire-Revised (AAQ-II) and Fear Avoidance after Traumatic Brain Injury (FAB-TBI).Main outcome and Results The AAQ-ABI (RA) was found to have strong internal consistency (Cronbach’s α = 0.87). Consistent with previous findings, the AAQ-ABI (RA) had one distinct factor. Fit to the unidimensional Rasch model was adequate (χ2 (18) = 22.5, p = .21) with no evidence of differential item functioning across person factors examined. The AAQ-ABI (RA) also had expected relationships with theoretically relevant constructs.Conclusions The AAQ-ABI (RA) appears to be a psychometrically sound measure of psychological flexibility in mTBI.
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Faulkner and colleagues found that the AAQ-ABI (RA) has one distinct underlying factor in mTBI and strong internal consistency (Cronbach's α=0.87).
“Faulkner and colleagues70 found that the AAQ-ABI (RA) has one distinct underlying factor in mTBI and strong internal consistency (Cronbach’s α=0.87).”
From Acceptance and commitment therapy for mild traumatic brain injury (ACTion-mTBI): a quasiexperimental feasibility study (2025) · cites this paper as [70]
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Faulkner, J. W., Snell, D. L., & Theadom, A. (2022) · Brain Injury · doi:10.1080/02699052.2022.2109747 · Cited by 9 · see citing works
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Self-citationFaulkner, J., Prouty, D., Devlin, L., Appleton, D., Roche, M., Below, K., Moffat, J., Snell, D., Williams, M. N., Barker-Collo, S., et al. (2025) · BMJ Open · doi:10.1136/bmjopen-2024-089727 · Cited by 7 · see citing works
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- Authors
- Faulkner, J. W., Snell, D. L., Theadom, A., Mahon, S., Barker-Collo, S., & Skirrow, P.
- Affiliations
- Massey University (NZ)
- University of Otago (NZ)
- Auckland University of Technology (NZ)
- University of Auckland (NZ)
- Corresponding author
- Faulkner, Josh W.
- Venue
- Brain Injury
- Publisher
- Informa UK Limited
- Published
- 2021-07-29
- Volume
- 35
- Issue
- 9
- Pages
- 1103-1111
- ISSN
- 0269-9052 (ISSN-L)
- 1362-301X
- OpenAlex
- W3189549088
- Cited by
- 4
- References
- 58
- Citations by year
- 2025: 2 · 2022: 2
- FWCI
- 0.36
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Brain Injury (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Health Research Council of New Zealand (Foxley Clinical Fellowship (20/041))
- Topics
- Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
- Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Keywords
- mild traumatic brain injury, psychological flexibility, psychometric properties, construct validity, Rasch analysis, differential item functioning, fear avoidance
- MeSH terms
- Adult, Brain Concussion, Factor Analysis, Statistical, Humans, Psychometrics, Surveys and Questionnaires, Reproducibility of Results
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