@article{ref1,
title="Inheritance of behavior in infants",
journal="Science",
year="1963",
author="Freedman, D. G. and Keller, B.",
volume="140",
number="3563",
pages="196-198",
abstract="Mental and motor abilities and personality development were studied in 20 pairs of infant twins of the same sex on a monthly basis in their first year, that is, before mutual imitation becomes a factor. Blood group determinations, made after the study was completed, revealed an N(1) of 11 fraternal and N(2) of 9 identical pairs. Within-pair differences were significantly greater within fraternal pairs on all tests and rating scales.<p /><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="",
url="http://dx.doi.org/"
}