The Kallikak Family: A Study in the Heredity of Feeble-Mindedness was a 1912 book by the American psychologist and eugenicist Henry H. Goddard, dedicated to his patron Samuel Simeon Fels. Supposedly an extended case study of Goddard's for the inheritance of "feeble-mindedness", a general category referring to a variety of mental disabilities including intellectual disability, learning disabilities, and mental illness, the book is noted for factual inaccuracies that render its conclusions invalid. Goddard believed that a variety of mental traits were hereditary and that society should limit reproduction by people possessing these traits. Nazi propagandists incorporated The Kallikak Family narrative into their efforts to legitimize forced sterilization in the early 1930s, eventually leading to the mass execution of tens of thousands of disabled German children and adults from 1939-1941; thus the book played a significant role in Nazi Germany’s eugenics movement under Adolf Hitler. The name Kallikak is a pseudonym used as a family name throughout the book. Goddard coined the name from the Greek words καλός (kalos, good) and κακός (kakos, bad).
Summary The book begins by discussing the case of "Deborah Kallikak" (real name Emma Wolverton, 1889–1978), an ostensibly “feebleminded” woman held in lifelong involuntary custody, first at Goddard's institution, the New Jersey Home for the Education and Care of Feebleminded Children (now Vineland Training School), and subsequently, beginning at age 25, at the New Jersey State Institution for Feeble-Minded Women. In the course of investigating her supposed genealogy, Goddard claims to have discovered that her family tree bore a curious and surprising moral tale. The book follows the genealogy of Martin Kallikak, Deborah's great-great-great grandfather, a Revolutionary War hero married to a Quaker woman. On his way back from battle the normally morally upright Martin dallied one time with a "feeble-minded" barmaid. He impregnated her and then abandoned her. The young Martin soon reformed and went on with his upright life, becoming a respected New England citizen and father of a large family of prosperous individuals. All of the children that came from this relationship were "wholesome" and had no signs of developmental disabilities.
But according to Goddard, a child was born by the dalliance with "the nameless feeble-minded girl". This single child, a male, called Martin Kallikak Jr. in the book (real name John Wolverton, 1776–1861), went on to father more children, who fathered their own children, and on and on down the generations. And so with the Kallikaks, Goddard claims to have discovered, one has as close as one could imagine an experiment in the hereditability of intelligence, moral ability, and criminality. On the "feeble-minded" side of the Kallikak family, descended from the abandoned single-parent barmaid, the children wound up poor, mentally ill, delinquent, and intellectually disabled. Deborah was, in Goddard's assessment, "feeble-minded": a catch-all early 20th century term to describe various forms of intellectual or learning disabilities. Goddard was interested in the heritability of "feeble-mindedness"—and often wrote of the invisible threat of recessive "feeble-minded" genes carried by otherwise healthy and intelligent looking members of the population (Mendel's laws had only been rediscovered a decade before; Goddard's genetic shorthand was, in its day, considered to be on par with cutting-edge science). It was in tracing the family history of Deborah that Goddard and his assistants discovered that Deborah's family of drunks and criminals was related—through Martin Kallikak—to another family tree of economy and prosperity.
On the "normal" side of the Kallikak family tree, the children Martin had with his wife and their descendants all ended up prosperous, intelligent, and morally upstanding. They were lawyers, ministers, and doctors. None were "feeble-minded". Goddard concluded from this that intelligence, sanity, and morality were hereditary, and every effort should be undertaken to keep the 'feeble-minded' from procreating, with the overall goal of potentially ending 'feeble-mindedness' and its accompanying traits. The damage from even one dalliance between a young man and a "feeble-minded" woman could create generations and generations worth of crime and poverty, with its members eventually living off the generosity of the state (and consequently taxpayers), Goddard argued. His work contains intricately constructed family trees, showing near-perfect Mendelian ratios in the inheritance of negative and positive traits. Goddard recommended segregating them in institutions, where they would be taught to perform various kinds of menial labor.
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