Determines the time course of circulating cortisol following circumcision in 80 healthy newborns and investigates whether changes in behavioral state following circumcision in anyway paralleled the adrenocortical time course. Adrenocortical and behavioral data indicated that subjects were able to cope with circumcision trauma. Cortisol levels…

Four-month-old rhesus monkeys were removed from their social group under three different conditions of perceptual isolation from their mothers and peers. Infant behavior was recorded and blood samples were obtained for analysis of plasma cortisol. Infants never showed signs of depression; their responses following separation were seen as attempts…

Preschoolers' normative patterns, individual styles, and developmental changes in coping with anger between others (background anger) were examined. Pairs of children were observed playing while two adults in an adjacent room verbally expressed anger toward each other. Children were also interviewed concerning the feelings they had during the…

Preschool children's behavorial and physiological responses to separation were monitored before, during, and after their mothers' hospitalization for the birth of a sibling. Play sessions were videotaped simultaneously with activity level and heart rate monitoring, nighttime sleep was timelapse videotaped, and parents completed questionnaires…

Among 278 inner-city men studied for four decades and over three generations, eight variables captured 28 percent of the explained variance in upward social mobility: IQ, mother's education, mother's occupation, boyhood ego strength, and four ego defense mechanisms--intellectualization, dissociation, sublimation, and anticipation.…