Altruism, aggression, and social interactions in young children with a manic-depressive parent.

This is an exploratory study of the emotional and social functioning of young children with a manic-depressive parent. Seminaturalistic observations and experimental manipulations of the affective environment were used to assess 2-year-old children's regulation of emotion, as well as their aggression, altruism, and affiliative interactions. Children with a bipolar parent sometimes showed heightened distress and preoccupation with the conflicts and suffering of others, especially disturbances in adults. These children had difficulty in maintaining friendly social interactions, in sharing, and in helping their playmates. They also had difficulty modulating hostile impulses; they showed more maladaptive patterns of aggression toward peers and adults. These interpersonal and emotional problems of offspring of manic-depressives were often similar to those problems of manic-depressives that have been implicated in the clinical literature as possibly associated with the transmission of the disorder. This apparent congruence of findings obtained from different disciplines employing very different research strategies and studying people of different ages, attests to the utility of an explicit interdisciplinary approach in the area of developmental psychopathology.