Mental health of coresident family caregivers: examination of a two-factor model.

Data were collected from 140 caregivers of elderly relatives, their husbands, and coresident children. Lawton et al.'s (1991) parallel channel hypothesis, which suggests that positive and negative aspects of mental health have differential predictors, was tested. Data from caregivers, their husbands, and children support the hypothesized model, with greater interdependence of psychological process being associated with greater role centrality.