The document discusses adolescent social development and identity formation. It introduces the Twenty Statements Test, which is used to measure self-concept by having participants write 20 statements about themselves starting with "I am...". The responses are grouped into 5 categories: social groups, ideological beliefs, interests, ambitions, and self-evaluations. The document also discusses identity crisis in adolescence and strategies for resolving it, such as trying different roles and social groups. Forming a clear identity can be especially challenging for bicultural adolescents.