This study was designed to examine the effects of an assertive training program on interpersonal relations, and psychiatric symptoms in patients with a mental disorder.

The study employed a quasi experimental design. The subjects included44 patients with a mental disorder, 20 in the experimental group, and 24 in the control group. Data was collected using structured questionnaires over a 3 month period.

There were greater significant increases in scores of interpersonal relations and content of communication in the experimental group than the control group. Also, there was a greater significant decrease in the score of psychiatric symptoms in the experimental group than the control group.

Assertive training has an effect on increasing content of communication and decreasing psychiatric symptoms.