Successful Aging from the Viewpoint of Older Adults: Development of a Brief Successful Aging Inventory (SAI)

Abstract

Objective: Researcher-defined criteria for successful aging (SA) have been criticized for their limited perspective and failure to acknowledge subjective perceptions of older individuals. We assessed the extent to which older individuals consider specific factors, which they had suggested, to be important in defining SA. The present study had 2 objectives: (a) to develop a brief multidimensional questionnaire for assessing SA and to evaluate its psychometric properties; and (b) to examine age associations with each dimension of SA. Methods: A survey was conducted with 550 participants in a panel study of older adult residents of an elderly retirement community and with community-dwelling older adults, regarding factors that they considered to be important for SA. The psychometric evaluation involved exploratory and confirmatory factor analyses, reliability and validity analyses, and measurement invariance testing. Partial correlations were used to examine the association of age with SA. Results: The 4-factor solution provided a satisfactory fit to the data: proactive engagement, wellness resources, positive spirit, and valued relationships. Metric measurement invariance for this factor structure was confirmed across 2 age groups. The findings also suggest that the Successful Aging Inventory (SAI) scale might be a useful predictor of SA. Discussion: Our findings highlight the value of considering more comprehensive models of SA that include social relationships and proactive engagement.