Purposes of this study included constructing a self-administered measure of bias in sex role stereotypes and developing a self-intervention, self-confrontation manual to reduce the impact of these stereotypes on career choices. One hundred six items, representative of thirty-two stereotypes, were administered to 154-item tryout participants. A study was conducted to determine if the intervention manual reduced bias as measured by the survey. An experimental comparison group, time series design was used. Two hundred three volunteers were assigned randomly to an experimental or control group. Both groups were pretested and posttested with the survey. Only the experimental group received the treatment. Although the two groups performed about equally on the pretest, the experimental group's posttest bias scores were significantly lower. The differences were greater for males. On the pretest, males in each group were significantly more biased than females. On the posttest, there were no significant sex differences in the experimental group, but control males scored significantly higher than control females. The data generally supported the conclusion that the intervention strategy worked for this sample. Suggestions included constructing additional activities related to male stereotypes and adapting the materials for use by persons other than educators. (Author/LRA)