Variables associated with interpersonal distance were studied in this research project. Since close physical proximity may produce defensive behaviors that are disruptive to learning, instructors must be aware of the combinations of variables that produce the need for increased interpersonal distance in instructor-student interactions. A demographic questionnaire and the modified comfortable Interpersonal Distance Scale were administered. Data from the CID were analyzed by analysis of variance with repeated measures on three measures. Hypotheses accepted were that students will maintain less distance from their instructors in interactive classes than in lecture classes, from female instructors than from male instructors, and from black instructors than from white instructors. Also accepted were the hypotheses that white students will maintain less distance from instructors than will blacks, black students will permit black instructors closer than white students, and male students will permit female instructors closer than male instructors. (Author/LBH)