This book offers an extensive critique of individualism in psychology, a view that has been the subject of debate between philosophers such as Jerry Fodor and Tyler Burge for many years. Robert Wilson approaches individualism as an issue in the philosophy of science, and by discussing issues such as computationalism and the mind's modularity, he opens the subject up for nonphilosophers in psychology and computer science. Because the topic is so central to the philosophy of mind, an area generating enormous research and debate at present, the book has implications for a very broad range of philosophical issues.