A student steals a bicycle to get home, or removes the pages of a library book so that other students can't do the assigned reading. Antisocial behavior such as this inspired Michael Levenson, a UC Davis research psychologist, to use a new survey instrument he designed to test college students for their level of psychopathy, "the callous disregard for the welfare of others." Levenson and two undergraduate student researchers, Kent Kiehl and Cory Fitzpatrick, published their findings this month in the Journal of Personality and Social Psychology. Using a questionnaire to test 487 UC Davis students, they were able to predict "the antisocial behavior you are liable to find in college students." Levenson believes that some psychopathy is not biologically programmed, but learned, and may be reinforced in society, where rewards are given for "quarterly reports that look good even though the business goes down." Contrary to what other researchers have suggested, Levenson found, in both this study and a 1990 study, that psychopathic traits were not associated with a tendency to seek thrill and adventure.