The study of intergroup processes begins from many places, and a diversity of approaches in both theory and method is a hallmark and strength of the literature. This chapter focuses on the narrower topic of implicit forms of prejudice. It is natural to assume that prejudice causes discrimination, and that one reason to study prejudice is to understand how it gives rise to discrimination. Research on implicit intergroup attitudes emerged against a voluminous body of work on intergroup attitudes more generally. Most social and cognitive psychologists studying implicit social cognition had argued-or at least assumed-that phenomena such as implicit prejudice emerged gradually through a “slow learning” internalization of statistical regularities in the environment. Early studies on the development of implicit intergroup bias focused on majority children in the United States, Japan, and the United Kingdom, and employed the Implicit Association Test.