This study was undertaken to add to the knowledge of the psychosocial effects of the 4-H program upon its members. The objectives were to determine if 4-H involvement is associated with the psychological and social maturation of adolescent members, and to investigate how several variables such as age, urban/rural residence, and S. E. S. may help explain this relationship or lack of relationship. To accomplish these objectives 165 youths (103 4-H, 62 non 4-H ) and one parent of each youth, responded to mail-out questionnaires, answering questions of biographical content, and items from the Psychosocial Maturity inventory. Responses were compiled and analyzed by the use of several statistical summary techniques. The author considers the following findings to be of the greatest theoretical significance. Discriminant analysis showed 4-Hers to be different from non 4-Hers in regard to parental reports of their Interpersonal and Social Adequacy. Correlational analyses supported the notion that 4-H involvement may indeed lead to increased Social Adequacy, but showed that although Interpersonal Adequacy was higher in 4-Hers than non 4-Hers, this advantage is apparently not soley due to 4-H program effects.