Interview responses of 72 fifth-, eighth-, and eleventh-graders revealed developmental changes in the scope and nature of perceived peer influence and in the extent to which peer group reactions have an impact on self-evaluations. Developmental changes in the apparent reference-group functions of peer groups for adolescent identity formation are…

Used new administration procedure of Self Description Questionnaire to assess dimensions of young children's self-concept in a multicohort-multioccasion study. Found that the scale's reliability and stability improved with age and from one year to the next. Gender differences were stable over age. Time 1 teacher ratings contributed to the…