Interpersonal relations in children Adjustment (Psychology) in adolescence Adjustment (Psychology) in children Conflict (Psychology) in children Interpersonal relations in adolescence Child development Cognition Conflict (Psychology) Conflict (Psychology) in adolescence Conflict (Psychology) in adolescene Friendship in adolescence Friendship in children In infancy & childhood Interpersonal relations Interpersonal relations in adolescene Social Adjustment Social perception Socialization in adolescence in infancy & childhood