In Born That Way, William Wright takes us on a fascinating, comprehensive journey into the new world of genetic research and molecular biology to show us the work that has been done during the last half century: how the remarkable findings about gene behavior are overturning existing theories and demolishing assumptions upon which fifty years of psychological thought had been based. He writes not only about twin and adoption studies that measure and compare individuals to establish a genetic influence, but about the corroborating research in molecular biology that underlines the links between genes and personality.