In a study of counselor verbal behavior as a function of client stimulus input, a counseling paradigm was employed using 4 clientâactors and 30 counselors. Independent variables were hostile or friendly client behavior, amount of counseling experience, counselor sex and client sex. The dependent variable of counselor verbal behavior was measured by a revision of the Bales Interaction Process Analysis Categories. Analysis of variance led to the finding that all of the independent variables had a statistically significant effect upon the counselors' verbal responses, but the number of response categories affected varied from 1 to 7 depending on the variable involved. Significant interaction effects were also found. From the data, it was concluded that client demeanor and client sex significantly influenced counselors' verbal responses, but counselor experience and counselor sex were relatively unimportant in their effect upon the counselors' behavior.