Sibling Resemblance and Its Relation to Age Interval
- 14 April 1933
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 77 (1998) , 373-374
- https://doi.org/10.1126/science.77.1998.373
Abstract
Intelligence test records of 1023 pairs of siblings, separated in age by intervals of 1-11 yrs., were examined for any existing relationship between length of interval and degree of resemblance in intelligence. Correlations between age interval and I. Q. difference approximated zero. The degree of sibling resemblance, computed by the product-moment formula, was .49, .52 and .34, respectively, for 3 groups.This publication has 1 reference indexed in Scilit:
- A BIOMETRIC INVESTIGATION OF TWINS AND THEIR BROTHERS AND SISTERSAnnals of Eugenics, 1930