Based on research which has followed the behavioral development of 133 subjects from infancy to early adulthood, discusses incidence of behavior disorders, defines the concept of temperament, and briefly discusses findings. Remarks on the usefulness of the "goodness of fit" concept for tracing developmental sequences. (GC)

Early personality and environmental characteristics that predict later problematic aggression and depression in children were investigated longitudinally. A developmental psychopathology approach was taken. (This approach assumes that patterns of adaptation and maladaptation in development can best be understood when explored simultaneously and…