Prior research, and high-prolife contemporary examples, show that individuals tend to underestimate their own levels of bias. This underestimation is partially explained by motivational factors. However, (meta-) cognitive factors may also be involved. Conceptualising contemporary egalitarianism as type of skill or competence, this research proposed that egalitarianism should conform to the Dunning-Kruger model. That is, individuals should overestimate their own ability, and this overestimation should be strongest in the least competent individuals. Furthermore, training should improve metacognition and reduce this overestimation. Two studies on racism (N = 148), and sexism (N = 159) partially supported these hypotheses. In line with the Dunning-Kruger model, participants overestimated their levels of racial and gender-based egalitarianism, and this pattern was strongest among the most prejudiced participants. However, diversity training did not affect participants' overestimation of their egalitarianism. Implications for contemporary prejudice, and prejudice-reducing strategies are discussed.