Although self-disclosure is generally considered to be an essential ingredient of existential approaches to counseling, the concept itself is not well-defined and its effects on counseling process and outcome have not been clearly documented. This study examined the potential effects of self-disclosure in a clinical setting. Sixty male college seniors with deficient job-interviewing skills were randomly assigned to one of five treatments in a 2 x 2 + 1 design. The presence or absence of two kinds of counselor self-disclosures were crossed and embedded in a standard interview skills training program. The standard program and an additional no treatment cell served as control conditions. Four different counselors treating subjects on an individual basis provided predetermined genuine self-disclosures at different points in the interviews. Their self-disclosures reflected the qualities of intimacy and /or skill display. Comparisons between the existential and coping-mastery model literatures were drawn. The supposition that counselor self-disclosures lead to improvement in counseling process and outcome was not supported. (Author/NB)