A Self-Concept Scale for Adolescents based on Havighurst's Developmental Tasks for Youth was constructed to reflect adolescents' perceptions of their ability to achieve these tasks in relation to personal abilities, the abilities of others, and the criteria for successful task completion. A validity and reliability study showed the scale to be both valid and reliable. The scale was administered to 256 Indian adolescents to determine if grade level, grade point average (GPA), age, sex, and social class were significantly related to self-concept in relation to the ability to achieve Havighurst's developmental tasks. GPA was significantly related to the Indian adolescent's perception of his ability to achieve all but one of the tasks. Significance was also found between grade level and the adolescent's perceptions of his ability to achieve Task IV, Achieving Emotional Independence of Parents and Other Adults. None of the other variables were significant for any of the individual tasks. (The Self-Concept Scale for Adolescents and a report of the validity and reliability study are included.) (Author/NRB)