Abstract
In a previous study by the authors (1984), the behavioral and developmental characteristics of aggressive boys, hyperactive boys and boys who were both aggressive and hyperactive were examined. This report investigates the perinatal histories, maternal and family characteristics of these same groups, and a comparison group not identified as aggressive or hyperactive. The four groups did not differ in terms of their perinatal histories. While boys with problems differed from those without, clear differences among the problem groups did not emerge. The results did suggest, however, that "quality of family life" varied to some degree among the problem groups.