"Drawing on the work of Abraham Maslow and his needs hierarchy and the triune brain concept of Paul MacLean, this book uses neuroscience as the bridge between the concepts of the natural and social sciences to create a new model of behavior. Emerging out of the dynamic between self-preservational and affectional, or empathic, behavior, Gerald Cory expands on the notion of reciprocity as the pervasive norm of society. Cory's book is a brilliant attempt to show that the reciprocal brain is the dynamic shaping mechanism across the multidisciplinary spectrum from evolutionary neuroscience through the alternative social perspectives of anthropology, sociology, economics, and political science."--Jacket.