This study investigated the effects of attendance at a panel featuring gay and lesbian speakers on self-reported measures of individual homophobia. A total of 200 female and 120 male college students enrolled in human sexuality classes were randomly assigned to pretest or no pretest conditions and completed surveys before, after, and one month following the intervention. Cognitive homophobia was assessed by the Attitudes Toward Lesbians and Gay Men scales. Behavioral homophobia was determined by the Posttest Evaluation Questionnaire. All subjects completed the Marlowe-Crowne Social Desirability Scale as a formalized check on social desirability response tendencies. It was concluded that: (1) the students' levels of cognitive antigay attitudes decreased following interaction with a gay and lesbian speaker panel; (2) the students' levels of affective homophobic attitudes decreased following participation in this panel; and (3) students did not report a greater willingness to engage in gay positive behaviors following exposure to this panel; (4) one month later, students indicated a slight tendency to engage in fewer gay positive behaviors. The study concluded, therefore, that behavior change did not occur as a result of the panel. (Contains 23 references.) (CK)