This study examined the effects of a diversity training workshop on self-perceptions of behavior and importance of related management practices among ninety-nine middle managers in a large corporation. It also examined relationships between environmental variables and training criterion variables. It was hypothesized that the workshop would positively affect perceptions of behavior and ratings of importance and that the work and social environments would influence the training outcomes. Analyses were conducted to determine if the environmental variables had direct or indirect effects on the training criterion variables. The study found that those who attended the workshop did rate management practices related to diversity as more important and did perceive themselves as engaging in such practices more than did a control group. The social environment variable indirectly affected posttest importance ratings of diversity-related management practices and self-perceptions of behavior through its effect on initial levels of those variables, but the work environment measure was not related to the criterion variables.