In order to examine their willingness to disclose, subjects were given a questionnaire to test the relative contributions to such willingness of stimulus person (teacher, friend, parent, stranger), situation (home, college, public place, social situation), individual differences, and response mode (e.g., sexual behavior, voting preference). The self-disclosure items were selected to represent manifestations of varying degrees of "intimacy," from kissing passionately to yawning openly. Contrary to previous findings, males indicated a greater willingness to self-disclose than did females. A substantial amount of the variance in the willingness to self-disclose was accounted for by the stimulus person. These results lend support to the idea that behavioral predictions are more powerful when one is able to specify the stimulus person as well as the situation, and when one knows the individual's general attitude toward a given response mode. (Author/CS)