As the child grows older and participates increasingly in activities outside the family, his relationships with people outside his family become increasingly important in his development.
As the child reaches adolescent, his peer group becomes increasingly important to him. The adolescent’s success or failure in winning social acceptance from both boys and girls is a major influence on his further development.
Although we have singled out parent-child and peer-group relations as perhaps the most important, it is apparent that many other types of interpersonal relationships with brothers and sisters, grandparents, teachers, and neighbors may play a significant part in shaping personality. Even a chance meeting with someone may change the direction of our lives.