I. PROBLEM. The purpose of this study was to determine whether or not the self-concept of the counselor-in-preparation was changed by participation in a counseling practicum. This dissertation also examined the ideal self-concept of the counselor-in-preparation and the counselor educator's concept of the counselor-in-preparation. Another factor investigated by this study was whether or not the counselors-in-preparation became more similar to each other. II. PROCEDURE. This study was limited to the fifteen counselors-in-preparation who participated in the 1968 Summer Counseling Practicum of the College of Education of the University of Houston. The group was divided into three equal sections each supervised by a counselor educator, who was a member of the faculty of the Department of Counseling and Guidance of the College of Education. [...]