A New Jersey study identified aptitude and personality traits of secondary male students who elected nontraditional career-related programs in vocational education. The sample of 182 eleventh- and twelfth-grade students included males enrolled in nontraditional subject areas, females from these same program areas, and males enrolled in traditional vocational programs. Data collection instruments were the Differential Aptitude Test (DAT) and the Strong Campbell Interest Inventory (SCII). Data were analyzed using the t-test and the General Linear Models procedure for unbalanced analysis of variance as outlined in the Statistical Analysis System. Results showed that male students who elected nontraditional vocational subjects scored higher in language usage and lower in space relations on the DAT than did the traditional male students. Nontraditional males scored significantly lower in the realistic type on the SCII and significantly higher in the social, conventional, enterprising, and artistic types. No significant differences were found in aptitude between males and females on five of seven subparts of the DAT. No significant difference was found in personality scores between males and females, except for the realistic type. There were significant differences in DAT scores among males in the three different programs but none in SCII scores. (Study materials are appended.) (YLB)