 The theoretical foundations of evolutionary psychology are discussed in the introduction, by Cosmides, Tooby and Barkow, in an essay by Tooby and Cosmides on "The Psychological Foundations of Culture", and an essay by anthropologist Donald Symons "On the Use and Misuse of Darwinism in the Study of Human Behavior".The book also includes empirical research papers meant to introduce topics of interest in evolutionary psychology, such as mating, social and developmental psychology, and perceptual adaptations.It includes contributions from evolutionary psychologists such as Steven Pinker, David Buss, Martin Daly, and Margo Wilson.