Several social scientists conducted experimental and quasi-experimental studies on college-age youth to meas ure the effectiveness of the instruction of heterosocial skills through various combinations of practice dating, counseling, self-reinforcement, behavioral rehearsal, "heterosexual group discussion", participant modeling, self-observation by videotape, desensitization, sensitivity training, behavior-skills-training, sexual education, and "cognitive modification" (James P. Curran, 1977; Hansen et al., 1992).