Psychometric Properties of the Acceptance and Action Questionnaire-II (AAQ-II) in Older Adult Primary Care Patients.

Objectives: Considering that the examination of psychological flexibility measures among older adults is scant, this study explores the psychometric properties of the Acceptance and Action Questionnaire-II (AAQ-II) among outpatient geriatrics primary care clinic patients in a university-affiliated medical center in the Deep South.
Methods: On average, patients who consented to participate in research ( N  = 119) were 75.42 ( SD  = 9.14) years old. Approximately 74% were women, 91% were non-Hispanic white, and 86% lived in urban areas. Measures included psychological inflexibility, subjective health literacy, depression, anxiety, and global cognitive functioning.
Results: The AAQ-II demonstrated adequate internal reliability, Cronbach's α = 0.79, and good test-retest reliability, r (28) = .84, p  < .001. With the removal of item 4, confirmatory factor analysis demonstrated adequate construct validity for the use of AAQ-II with older adults. As predicted, the AAQ-II exhibited concurrent, predictive, discriminant, and incremental validity within this older adult sample.
Conclusions: These results demonstrate meaningful scientific and clinical implications. This is the first study to examine the psychometric properties of the Acceptance and Action Questionnaire-II (AAQ-II) in an older adult sample.
Clinical Implications: The AAQ-II is a psychometrically sound measurement that can be clinically used on older adults.