A study determined the relationships among interpersonal communication competence, communicative flexibility, and rhetorical sensitivity and whether there are difference among gender groups, age groups, and class groups in rating these dependent measures. Subjects, 78 students enrolled in one of 4 sections of an upper-division undergraduate interviewing course at a large Midwestern university, completed 3 self-report measures. Results indicated significant relationships among all variables. In addition, significant differences occurred between gender groups and between age groups in rating the communication flexibility variable. Results also indicated that extension students were rhetorically sensitive, more flexible, and perceived greater communication competence, as well as being rated more positively by their interviewer than day students. (Contains 16 references and 4 tables of data. Appendixes present the 3 self-report measures.) (Author/RS)