This study investigates the relationship between interpersonal behaviors and leader behaviors for present and prospective leaders in business administration and educational administration. Interpersonal behavior characteristics are measured by Schutz' FIRO-B (Fundamental Interpersonal Relations Orientation--Behavior) Scales, while leader behavior characteristics are measured by Stogdill's Leader Behavior Description Questionnaire XII. Populations consist of business administration graduate students and educational administration graduate students enrolled in the College of Business Administration and Education in a large (urban) southwestern state-supported university. Samples consisted of 83 business administration and 71 educational administration students; 106 were males, 48 were females. "Expressed Inclusion" was the most powerful leader behavior for the 154 respondents, for it was significantly related to 8 of 12 leader behavior characteristics. The least powerful predictors of leader behavior characteristics were "Expressed Affection" and "Wanted Affection." The findings demonstrate that "Expressed Inclusion" and "Wanted Inclusion" must be satisfied first before a person takes care of "Control" and "Affection." Tables are included in an appendix. (Author/TE)