Citation

Faulkner JW, Snell DL, Theadom A, Mahon S, Barker-Collo S, Skirrow P. Brain Inj. 2021; ePub(ePub): ePub.

Copyright

(Copyright © 2021, Informa - Taylor and Francis Group)

DOI

10.1080/02699052.2021.1959062

PMID

unavailable

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 (χ(2) (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.

Language: en

Keywords

Mild traumatic brain injury; psychometrics; post-concussion symptoms; psychological flexibility