(FORTUNE Magazine) – ITHACA, New York -- Every fall, one in six undergraduate students at Cornell University takes Psychology 101. The introductory psychology class, taught by Professor James Maas, fills the university's 2,000-seat concert hall . . . Before a recent class . . . the students in the balcony of the semicircular hall stood in their seats, performing a stadium-style ''wave.'' -- From an article in the New York Times.