Late-midlife and older couples' shared possible selves and psychological well-being during times of illness: the role of collaborative problem solving.

We investigated associations between spouses' shared possible selves and well-being as a function of their perceptions of collaboration in 61 late-midlife (M = 60 years) and older (M = 72 years) couples dealing with prostate cancer. Spouses completed assessments of possible selves (with shared selves defined as possible selves portraying a similar goal across spouses), psychological well-being, and enjoyment and frequency of collaboration. Associations between shared selves and better well-being occurred through better enjoyment of collaboration regardless of age (after controlling for marital quality and subjective health). An interaction revealing that shared selves were associated with better well-being only with frequent collaboration was obtained with older couples but was not found in late-midlife couples.