Book excerpt: Stereotyping is one of the biggest single issues in social psychology, but relatively little is known about how and why stereotypes form. This is the first book to explore the process of stereotype formation, the way that people develop impressions and views of social groups. Conventional approaches to stereotyping assume that stereotypes are based on erroneous and distorted processes, but the authors of this book take a very different view, namely that stereotypes form in order to explain aspects of social groups and in particular to explain relationships between groups.