AMHERST, Mass. - The Center for the Family of the University of Massachusetts will present its first Tay Gavin Erickson Lecture on Tues. May 9 at 5:30 p.m. in the Campus Center Auditorium, when author Patricia Hersch addresses the pain and confusion American adolescents feel in today''s society. The lecture is free, open to the public, and co-sponsored by the UMass department of consumer studies, the Office of University Outreach, and the 4-H Youth and Family Program of UMass Extension.