The focus of this study is the relation between mothers' gender stereotypic beliefs, their perceptions of their children's abilities, and their children's self-perceptions in 3 activity domains. Approximately 1,500 mothers and their 11- to 12-year-old children responded to questions about the children's abilities in the math, sports, and social domains. It was predicted that mothers' beliefs about their children would be moderated by their gender stereotypic beliefs about the abilities of female and male people in general. As predicted, path analyses revealed that mothers' gender stereotypic beliefs interact with the sex of their child to influence their perceptions of the child's abilities. Mothers' perceptions, in turn, mediate the influence of past performance on children's self-perceptions in each domain.