At the beginning of this decade, Margaret Mead defined of generation gap in Culture and Commitment, a book the New York Times called a slim volume of shining intelligence. Now as the 70 s draw to a close, in a new section written especially for this edition, she explores the lives and values of the new generation these years have shaped. All those who turned to Dr. Mead for an understanding of the 60 s will welcome her insights into the 70 s.