This paper examines the impact of 12 hours of exposure to Rational Behavior Training (RBT) and 10 days of exposure to a controlled conflict situation within a wilderness environment on 30 high school students. Results indicate that the treatment group, when compared with a control group, showed a marked and statistically significant reduction in irrational personality traits and intra-interpersonal needs. These results suggest that members of the treatment group as compared to the control group are viewing themselves as more rational human beings and are better prepared mentally to cope more rationally with their intra-interpersonal environments. (Author)