This summary of the Fourth Annual Conference on Major Transitions in the Human Life Cycle contains a preface, introductory section on adolescence and young adulthood (ages 14 through 24 years), and the following presentations, complete with discussion text: (1) "Historical Treatment of the Age Group" (John Demos); (2) "Demographic Considerations" (Arthur J. Norton); (3) "Young People as Individuals and as Family Members: The Implications for Public Policy" (Sheila B. Kamerman); (4) "Youth: Stage or Problem?" (Alfred J. Kahn); (5) "The Challenge of Shaping a Personal Identity" (Edmund D. Pellegrino); (6) "The Evolution of Human Genders" (A. J. Kelso); (7) "Chemical Dependence and Drugs" (Donald West King); (8) "Psychiatric Factors" (Leonard Duhl); (9) "Socio-Psychological Approaches" (June Jackson Christmas); (10) "School Counseling as an Intervention" (Helen R. Washburn); (11) "Counseling and Intervention in Colleges" (John G. Darley); (12) "Shaping and Mentoring Influences in Adolescence" (Sidney Werkman); (13) "Heterosexual and Homosexual Relationships" (Philip Blumstein); (14) "Young People and Religion" (John Cannon); (15) "Cults" (Harold Visotsky); (16) "Juvenile Crime" (William E. Threlkeld); (17) "Careers and Vocations" (Williard Wirtz); (18) "Meeting the Educational Needs of Young People" (Alvin C. Eurich); (19) "Ferment and Experimentation in Education" (Ernest J. Bartell); (20) "Third World Perspective" (Aklilu Habte); and (21) "Priorities for the Future" (John Scanlon). A list of conference participants and a selected bibliography are appended. (NB)