Purpose: Purpose in life and capabilities are two significant individual elements that enhance quality of life among older people. Capabilities refers to the extent to which older people are free to make choices that are important to them. At present, it is not known how purpose in life interacts with capabilities to influence quality of life for those living with a disability. This study examined the extent to which purpose in life and capabilities interacts with health status to affect quality of life, particularly for older people with a disability.Methods: Self-report data from participants in a longitudinal cohort study of older New Zealanders were analyzed. Responses from 452 older people with a disability were compared with 3299 age- and gender-matched older people without a disability on indicators related to health and aging. The associations were tested using hierarchical regression. Mediational impact of purpose in life and capabilities were tested via path analysis.Results: Mental health, physical health, purpose in life, and capabilities accounted for a significant amount of variance in quality of life for older people with a disability. Purpose in life and capabilities were significant unique mediators for older people with a disability.Conclusions: Purpose in life may help older people with a disability to deal with early onset stressors or changes in mental and physical health to maintain overall quality of life. The role of capabilities suggests that the social environment and access to resources and choices are important in ensuring that older people aging with or into a disability achieve quality of life in a socially just environment.Implications for rehabilitationsPurpose in life and capability are unique mediators of the relationship between health status and quality of life.Purpose in life may act as an effective buffering mechanism to deal with disability in later life while capability can empower older people with a disability to achieve quality of life in a just environment.The notion of successful aging with disability should be re-defined as using psychological, social support, and healthcare resources to live a life consistent with personal values in the context of disabilityRather than emphasizing structural factors and physical functioning in activity participation, older people with disability should be supported to decide and pursue their own preferences.Rehabilitation professionals can work flexibly with older people with disability to maximize their resilience, dignity, autonomy and choice, and positive connection to others.
Keywords: Older people; aging and disability; capabilities; purpose in life; quality of life.