Darwin's Use of Intellectual Disability in The Descent of Man

Steven A. Gelb

Abstract


When Charles Darwin turned his attention to writing about human descent in 1871 he attempted to narrow the fossil gap between human beings and higher primates by presenting persons with intellectual disabilities — "idiots" in the language of the day — as evidence in support of the theory of evolution. This paper explores the four ways that Darwin used persons with intellectual disabilities in The Descent of Man: 1) as intermediate rung on the evolutionary ladder connecting humans and primates; 2) as exemplars of the inevitable waste and loss produced by natural selection acting upon variability; 3) as the floor of a scale representing the "lowest", most unfit variety of any species when individuals were rank ordered by intelligence; and 4) as atavistic reversions to extinct forms whose study would reveal the characteristics of earlier stages of human evolution. Darwin's strategic use of intellectual disability is brought to bear on the controversy regarding the mental state of Darwin's last child.

Full Text:

html


DOI: http://dx.doi.org/10.18061/dsq.v28i2.96

Copyright (c) 2008 Steven A. Gelb



Volume 1 through Volume 20, no. 3 of Disability Studies Quarterly is archived on the Knowledge Bank site; Volume 20, no. 4 through the present can be found on this site under Archives.

Beginning with Volume 36, Issue No. 4 (2016), Disability Studies Quarterly is published under a Creative Commons Attribution-NonCommercial-NoDerivatives license unless otherwise indicated. 

Disability Studies Quarterly is published by The Ohio State University Libraries in partnership with the Society for Disability Studies.

If you encounter problems with the site or have comments to offer, including any access difficulty due to incompatibility with adaptive technology, please contact libkbhelp@lists.osu.edu.

ISSN: 2159-8371 (Online); 1041-5718 (Print)