Much research has attempted to understand the short-term effects of divorce, and it has shown overall harmful effects during childhood. The long-range implications, or effects in adulthood, have largely been ignored. This correlational study sought to understand the long-term effects of divorce by identifying interpersonal traits, intimacy, and cognitions which characterize the male adult child of divorce (ACDs). The subjects were 151 men from the general population, one-half of whom were ACDs, while one-half were from an intact family. The subjects completed questionnaires on intimacy, injunctions (as a cognition), and interpersonal behavior. Numerous background data were examined. Analysis of the data revealed interpersonal traits and injunctions against closeness to statistically differentiate male ACDs from men from intact families. Male ACDs had a hostile guarded-rescuer interpersonal style. Traits associated with divorce in men included self-effacement, distrustfulness and submissiveness. Support was found for interpersonal theory, redecision theory, and the cognitive behavioral model of marital instability. (LLL)