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Hereditarianism is the doctrine or school of thought that heredity plays a significant role in determining human nature and character traits, such as intelligence and personality. Hereditarians believe in the power of genetics to explain human character traits and solve human social and political problems. Hereditarians adopt the view that an understanding of human evolution can extend the understanding of human nature. They have explicitly abandoned the standard social science model.
Hereditarianism is sometimes used as a synonym for biological or genetic determinism, though some scholars distinguish the two terms. When distinguished, biological determinism is used to mean that heredity is the only factor. Supporters of hereditarianism reject this sense of biological determinism for most cases. However, in some cases genetic determinism is true; for example, Matt Ridley describes Huntington's disease as "pure fatalism, undiluted by environmental variability." In other cases, hereditarians would see no role for genes; for example, the condition of "not knowing a word of Chinese" has nothing to do (directly) with genes. In individual cases, hereditarians believe that genes play an intermediate role, while genes largely determine the differences between the human races and genders. In all cases, they believe this is an empirical and not a philosophical question.
Pastore has claimed that hereditarians were more likely to be conservative, that they view social and economic inequality as a natural result of variation in talent and character. Thus, likewise they explain class and race differences as the result of partly genetic group differences. He contrasted this with the claim that behaviorists were more likely to be liberals or leftists, that they believe economic disadvantage and structural problems in the social order were to blame for group differences. Conservative economist Thomas Sowell has noted the converse relationship, noting that conservatives tend to have a hereditarian view of human nature (Sowell calls this the "constrained" view) and liberals tend to have a behaviorist ("unconstrained") view.
However, the historical correspondence between hereditarianism and conservatism has broken down at least among proponents of hereditarianism. Philosopher Peter Singer describes his vision of a new liberal political view that embraces hereditarianism in his 1999 book.
The Pioneer Fund, established in 1937 to support academic research into the problem of heredity and eugenics and the problems of human race betterment, is now a leading source of funding for scientists wishing to investigate hereditarian hypotheses.
- Richard Herrnstein author of The Bell Curve
- Charles Murray author of The Bell Curve
- Lloyd Humphreys
- Arthur Jensen
- Richard Lynn
- J. Philippe Rushton
- William Shockley
- E. O. Wilson
- Ridley, Matt (1999). Genome: the autobiography of a species in 23 chapters. Harper Collins. ISBN 0-06-019497-9.
- Dennett, Daniel (2003). Freedom Evolves. New York: Viking Press. ISBN 0-670-03186-0.
- Pastore, Nicolas (1949). The Nature-Nurture Controversy. New York: King's Crown Press.
- Sowell, Thomas (1987). A Conflict of Visions. New York: W. Morrow. ISBN 0-688-06912-6.
- Singer, Peter (1999). A Darwinian Left. New Haven and London: Yale University Press. ISBN 0-300-08323-8.
- Mehler B. Heredity and Hereditarianism. in Chambliss JJ, (ed.) Philosophy of Education: An Encyclopedia. New York: Garland 1996.