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Objectives:To evaluate the impact of an abstinence education program on sexual intercourse initiation and on possible cognitive mediators of sexual initiation for virgin seventh graders in suburban Virginia. Methods: Measures of sexual behavior and 6 mediating variables were compared at 3 time periods for program participants and a matched comparison group (n=550), controlling for pretest differences. Results: At posttest, program stu-dents scored significantly better on 4 of the 6 mediators. After one year, program students had a substantially lower risk of sexual initiation than did comparison students (RR=.457, P=.008). Conclusion: The program achieved a significant reduction in teen sexual initiation, and the role of the cognitive mediators was supported.

Interactions between leadership style, subordinate personality, and task type, and the effects of different combinations of these variables on group performance and satisfaction with supervision were investigated. Three different types of leaders were selected and trained; (a) high in human relations and high in task orientation, (b) low in human relations and high in task orientation, and (c) high in human relations and low in task orientation. Each leader worked with eight high-and eight low-dogmatism subjects on four tasks that differed in ambiguity and difficulty. As predicted, there were significant interaction effects for Leader X Subordinate X Task combinations (p<.0$). These effects on group performance were strongest for difficult-ambiguous tasks. Subordinates, regardless of their personality, were significantly more satisfied with leadership behavior that was high in human relations orientation.