The objective of this study was to determine the effect of the Human Development Institute's (HDI) new group relationship improvement program on the interpersonal functioning of those individuals who undergo the program. The "California Personality Inventory" (CPI), the "Fundamental Interpersonal Relations Orientation-Behavior" (FIRO-B), and a semantic differential were used to measure changes. The two hypotheses of this study are: There will be a significant change towards improved interpersonal relationship skills for all groups, as measured from pre- to post testings. There will be no significant difference in the change in interpersonal relations as measured by the pre-and post tests, between the groups using the RTF manual, and the groups having a leader and using an eclectic approach. An analysis of variance was run to test whether there was a significant difference pre to post on all three tests that were administered, or if there was a significant difference between post test scores of the leader and non-leader groups. Variable 5 on the CPI post testing was significant for the leader group. No other significance was obtained.