The relationship of 2 important variables -- group composition and time -- to the verbal behavior of sensitivity training groups, using 2 recently developed assessment procedures, is investigated. Sensitivity groups were composed according to the interpersonal skills of participants, as measured by a structured behavioral technique, the Group Assessment of Interpersonal Traits (GAIT). Group verbal behavior was assessed using the Group Interaction Profile (GRIP). Two hypotheses were tested on 66 college males and females: (1) sensitivity groups composed of members rated high on interpersonal skills will demonstrate more personal discussion than groups consisting of members rated low on these skills; and (2) group related discussion will increase as a function of time spent in sensitivity group sessions. The measurement instruments are briefly discussed and the results analyzed summarily. Both hypotheses were supported. (TL)