Goddard, H. H. (1920). Feeble-mindedness: Its causes and consequences(p. 437). New York, NY: MacMillan.
445
Walter, H. E. (1913). Genetics: An introduction to the study of heredity(p. 255). New York, NY: MacMillan.
446
Keller, J. (2005). In genes we trust: The biological component of psychological essentialism and its relationship to mechanisms of motivated social cognition. Journal of Personality and Social Psychology, 88, 686–702.
