This book presents an original and accessible analysis of the relationship between commonsense, or "folk," psychology and contemporary scientific psychology, focusing on the ways in which cognitive science presents a challenge to our commonsense self-image. It is designed as a textbook for upper-level undergraduate and beginning postgraduate students in philosophy and cognitive science, but as a text that not only surveys but advances the debates on the topics discussed, it will also be of interest to researchers working in these areas.