Henry Goddard told a story about the two branches of the Kallikak Family. Martin Kallikak married a woman from a highly respectable family and had an affair with a feebleminded woman. Goddard believed that intelligence was heritable, so he discouraged feebleminded people, like immigrants, from reproducing. Goddard fueled the Eugenics Movement by publishing this book, helping mantain the public opinion tabout the feebleminded. Goddard changed his view late in his life.