In this text, students are invited to rethink psychology by grounding it in the natural sciences with the understanding that evolutionary and developmental processes work together with culture to solve problems of human adaptation. These processes are cast as interdependent: Development cannot be understood except in the light of evolutionary theory, and the best proof of evolution is the fact of development. For students of evolutionary psychology, all the central topics -- such as evolved mental modules for theory of mind or language -- require an understanding...