The science of evolutionary psychology, which aims to answer such questions as "Why is the mind designed the way it is?" and "How does input from the environment interact with the mind to produce behavior?" has emerged as a vibrant new discipline with groundbreaking discoveries. In this handbook leading scholars in the field discuss the foundations of the field and recent discoveries. The seminal handbook of its kind in the field, The Handbook of Evolutionary Psychology is an indispensable reference tool for every psychologist and student interested in keeping abreast of new ideas in the field.