Two studies (N =456) compared the development of concepts of animal species and human gender, using a switched-at-birth reasoning task. Younger children (5- and 6-year-olds) treated animal species and human gender as equivalent; they made similar levels of category-based inferences and endorsed similar explanations for development in these 2 domains. In contrast, 10-year-olds and adults treated gender and species concepts as distinct from one another. They viewed gender-linked behavioral properties as open to environmental influence and endorsed environment-based mechanisms to explain gender development. At all ages, children demonstrated differentiated reasoning about physical and behavioral properties, although this differentiation became more stable with age. The role of psychological essentialism in guiding conceptual development is discussed. A number of theorists have compared children’s and adults ’ reasoning about gender and other human social categories to their reasoning about animal species, proposing that people appeal to a notion of a category ‘‘essence’ ’ in their reasoning about both kinds of categories (Allport, 1954; Atran,

Social categories guide young children’s preferences for novel objects

ABSTRACT—Prior work indicates that preschoolers (ages 4–5) maintain high self-appraisals and behavioral engagement after performing less well than their peers. This study tested the hypothesis that relative failure has more negative consequences for preschoolers when they interpret achievement differences as being tied to membership in social categories (e.g., when members of different categories have different achievement levels), as opposed to variations in individual effort. Preschoolers (N 5 58) were randomly assigned to receive feedback that a same-gender, other-gender, or gender-unidentified peer performed better than they did on a novel task. Experiences of failure relative to other-gender peers resulted in impaired performance on a subsequent task trial, as well as lack of improvement in self-evaluations after children received more positive feedback. These findings have implications for the origins of social comparisons, category-based reasoning, and the development of gender stereotypes and achievement motivation.