The Effects of Hereditary and Environmental Differences Upon Human Personality as Revealed by Studies of Twins
- 1 May 1933
- journal article
- research article
- Published by University of Chicago Press in The American Naturalist
- Vol. 67 (710) , 193-205
- https://doi.org/10.1086/280482
Abstract
Chiefly a preliminary report of an analysis of the first 10 cases of identical twins reared apart. The conclusion seems justified that, with respect to such modifiable characters as I.Q., body weight, and some personality traits, siblings owe their differences to genetic differences to about twice as great an extent as to environmental differences.This publication has 0 references indexed in Scilit: