What does it mean to "have sex"? A new survey has uncovered a bewildering variety of answers to that question. The Kinsey Institute at Indiana University asked 486 English-speaking, "mostly heterosexual" residents of Indiana between the ages of 18 and 96 what they think "having sex" constitutes. The study has the serious intent of making doctors aware that their definition of sex may differ from their patients'. A summary of the Institute's more intriguing findings: