Hormones and Intelligence

Abstract

Naccarati previously reported his work showing that a positive correlation exists between intelligence and either the morphologic index or the ratio of height to weight. The morphologic index of an individual is obtained by dividing the linear value of the sum of one upper and one lower extremity by the volumetric value of the trunk. In this supplementary research the results of the correlation found between intelligence and ratio of height to weight in three groups of university students are given. Group I comprised fifty students, mostly female, who were given the Army "Alpha" test. The colrelation was + .44, P.E. .06. Group II comprised ninety-four university students, who were given the Otis test. The correlation was + .15, P.E. .07. Group III comprised 252 male college students, who were given the Thorndike Examination test. The correlation was + .13, P.E. .04. The low coefficient in this group is explained by the fact that it included too many normosplanchnics. Larger coefficients would be found in groups whose members offer large morphologic and intelligence differences. The results of groups I and II are not to be taken at their face value, as the members of these groups were not all under twenty-five, and some were men and some women. From Psych Bulletin 20:09:00988. (PsycINFO Database Record (c) 2016 APA, all rights reserved)