Development of a Japanese Version of the Brief Ageing Perceptions Questionnaire and Its Validity and Reliability

Background: Self-perceptions of aging are important predictors of physical and mental health, longevity, and quality of life. The Brief Ageing Perceptions Questionnaire (B-APQ) is the most promising scale of self-perceptions about aging and has been translated into many languages. This study aimed to develop a Japanese version of the B-APQ and examine its validity and reliability. Methods: A web-based survey of 1500 people aged 65 and older was conducted in Japan. Of the participants, 651 were men and 849 were women. The average age was 72.97 years. Results: No significant distributional biases were found for any items of the Japanese version of the B-APQ. A confirmatory factor analysis (CFA) was conducted using the same model as the previous studies. The results of CFA showed that the goodness of fit indices met the acceptability criteria. Two-tailed Pearson correlations showed significant relationships between each factor of the Japanese version of the B-APQ as well as the cognitive and physical functioning, depression, and well-being of older adults. Conclusions: The Japanese version of the B-APQ has high internal consistency and significant factorial and construct-related validity. The Japanese version of the B-APQ is expected to be used to measure the self-perceptions of aging for further study in Japan.