Many books in evolutionary psychology emphasize just a small part of the total picture. Evolutionary Psychology gives students a clear understanding of how current psychological knowledge of human behavior and experience draws from a variety of perspectives. It begins with an understanding of evolution and the close connection between organisms and their environment. It provides the student the basics necessary to see how the environment and the turning on and off of genes can influence humans and the cultures in which they live. The book shows that we solve certain problems of life as many species have done for years. It also shows a glimpse of human abilities not seen in other species. We use language. We purposely teach our children. We build large cities that survive long after a single generation. We create cultures that through their writings and art can influence other humans thousands of years later. Current research in social processes, decision making, and brain imaging is presented in a clear manner throughout the book. The book emphasizes developmental processes and family relationships, sexual and social relationships, as well as emotionality and language. The book concludes by applying an evolutionary understanding approach to examine the areas of health and disease, psychopathology, and culture.