The Kallikak Family

The Kallikak Family: A Study in the Heredity of Feeble-Mindedness was a 1912 book by the American psychologist and eugenicist Henry H. Goddard. The work was an extended case study of Goddard's for the inheritance of "feeble-mindedness," a general category referring to a variety of mental disabilities including mental retardation, learning disabilities, and mental illness. Goddard concluded that a variety of mental traits were hereditary and society should limit reproduction by people possessing these traits.