Compared 30 caregiver-Alzheimer's afflicted spouse dyads with 17 healthy married couples. Found caregivers differed significantly from well-group spouses on companionship and total marital quality. Only 27 percent of Alzheimer's couples versus 82 percent of well couples were sexually active. Caregivers evidenced adaptation and control; afflicted spouses tended to deny problems and had distorted perceptions of interactions with caregiver spouses. (Author/PVV)