The relationship between severity of dementia and subjective well-being.

The purpose of this study was to describe the relationship between cognitive deficits and self-reported subjective well-being (depression, life satisfaction, and perceived social support). Sixty-three participants who suffered from mild to moderate dementia were interviewed with standardized measurements of subjective well-being. Reliability and validity of the instruments were satisfactory. Zero-order correlations showed significant correlations between depression, life satisfaction, and perceived social support. Cognitive functioning correlated negatively with perceived social support. Hierarchical regression analyses revealed that the interaction of physical diseases and cognitive functioning produced a significant change in depressive symptoms and life satisfaction. Participants with mild dementia reported more depressive symptoms and less life satisfaction than persons with more severe dementia, if there were few constraints on physical health.