Current theories of social cognition assume that implicit bias is influenced by early socialization experiences. To the extent that implicit biases reflect traces of past experiences, they should form slowly over time and grow with repeated experience. However, most research examining implicit bias in children indicates that levels of bias do not vary across age groups (i.e., age invariance). This article reviews the dominant theoretical interpretation of age invariance in implicit bias and considers alternative interpretations for these findings in light of several methodological and theoretical limitations. Specifically, the available evidence cannot distinguish between the effects of cohort versus development, category versus exemplar, attitude activation versus application, ingroup versus outgroup evaluation, or attitude-versus control-oriented processes. When considered from a developmental perspective, these issues suggest plausible alternative interpretations of age invariance, with important implications for understanding the mechanisms underlying the formation of implicit cognition and theories of implicit cognition
