The Assessment of Awareness of Ability (A3) in a Japanese context: a Rasch model application

The overall aim of this study was to evaluate the validity of the Assessment of Awareness of Ability (A3) in a Japanese context. The A3 (formerly known as the Assessment of Awareness of Disability, AAD) is a standardized 11-question interview used to explore the discrepancy between observed strengths and limitations in the performance of activities of daily living (ADL) according to the Assessment of Motor and Process Skills (AMPS) and the limitations described by the client. In this study, 259 matched Swedish and Japanese A3 data records were analyzed using a Rasch partial credit model (PCM). The analysis of rater consistency and items demonstrated acceptable goodness-of-fit according to the PCM, indicating rater consistency and internal scale validity. The A3 can help clients and therapists understand discrepancies between observed and self-reported performance aspects of various everyday tasks within Japanese and Swedish contexts.