Theories relating cognition to affect give grounds to the proposition that psychological stress effects social stereotyping. Empirical evidence regarding this proposition is inconclusive, however. The present study examined the effect of stress on stereotyping, and the role of self-esteem as a moderator of this effect. Participants rated their agreement with stereotypic statements about various social groups, shortly before they were to take a critical examination (High Stress condition) and 2 hours thereafter (Low Stress condition). The results showed that stress affected stereotyping among persons with high or with low self-esteem, but had a negligible effect on persons with moderate self-esteem.