The Works of Johannes Ockeghem: Problems in Reception and Style--by Lawrence Bernstein, University of Pennsylvania. Paine Hall, Davison Room, 4:15 p.m.
New Hampshire Primary Post-Mortem--by David Nyhan, columnist and associate editor, Boston Globe. Kennedy School, Taubman 275, noon.
Light-Dependent Enzymes: Mechanistic Studies on Novel Class of Biocatalysts--by Tadhg Begley, professor, Cornell University. 12 Oxford St., Mb-23, 4:15 p.m.
Reflections on Hebrew Literature: Past and Present (in Hebrew)--by Aharon Appelfeld, novelist, and professor of modern Hebrew literature, Ben Gurion University. Sever Hall, room 206, 4 p.m. Tuesday, 25 Feb.
Lectures
Land and Freedom: Social Relations, Political Conflict, and the Debate Over Property Rights Among New York's Anti-Renters, 1844-1846--by Reeve Huston, graduate student, History Dept., Yale University. Sever Hall, room 102, 4:15 p.m.
The Benefits Gap: Discussing the Problem and Alternatives--by Barbara Bengen, Strategic Health Care Consulting; and Christine Chevalier, Office of Human Resources. Agassiz House, 4 p.m. $5; free for Harvard students with ID. Preregistration is necessary. Call 495-8631 or 496-1855.
The Cultural Context of Teenage Childbearing--by Cynthia Coll, director, the Stone Center, Wellesley college. Murray Research Center, Conference Room, noon. Wednesday, 26 Feb.
Lectures
Effects of Paternal Exposure to Drugs and Workplace Toxicants in the Development of Offspring--by Gladys Friedler, Bunting fellow in developmental psychopharmacology; associate professor of psychiatry and member, Core Faculty, Behavioral Neuroscience Program, Boston University. Bunting lnstitute, 34 Concord Ave., 4 p.m.
Explaining Soviet Policy Toward China--by Elizabeth Wishnick, postdoctoral fellow, Russian Research Center. Coolidge Hall, room 4, 4 p.m.
Wandering through the Embryo: Cell Migration in Early Development--by Rachel Fink, Virginia Apgar Assistant Professor, Mount Holyoke College. Reception to follow in room 154 of Biological Laboratories at 5 p.m. Biological Laboratories, Main Lecture Hall, 4 p.m.
The Crisis of America's Middle Class--by Ralph Whitehead, professor of journalism, University of Massachusetts at Amherst, and consultant to Democratic presidential candidates. 3 Church St., 8 p.m.
The Old and the New in Architecture: No Easy Answers--by Eduard Sekler, professor emeritus, GSD. Sanders Theatre, Memorial Hall, 6 p.m.
Dissociation in Hypnotic Responding: Trying Hard or Hardly Trying?--by Ken Bowers, University of Waterloo. Coffee and cookies at 3:45 p.m. William James Hall 1, 4:10 p.m.
Dangers of the PC Movement on College Campuses--by John Leo, U.S. News and World Report columnist. Law School, Pound Hall 101, 6:30 p.m.
Theatre
Misalliance--Through Saturday, March 7. By George Bernard Shaw. American Repertory Theatre, 64 Brattle Street, 8 p.m. Call 547-8300 for tickets.