A colleague recently recounted a conversation she had had with a group of graduate students. For reasons that she cannot recall, the discussion had turned to the topic of "old-fashioned" ideas in psychology-perspectives and beliefs that had once enjoyed widespread support but that are now regarded as quaint curiosities. The students racked their brains to outdo one ofthe historical trivia of psychology: Le Bon's another with their knowledge fascination with the "group mind," Mesmer's theory of animal magnetism, the short-lived popularity of "moral therapy," Descartes' belief that erec tions...