@article{ref1,
title="Behavioral variability among retardates, children, and college students",
journal="Journal of psychology, The",
year="1973",
author="Liebert, A. M. and Baumeister, A. A.",
volume="83",
number="1st Half",
pages="57-65",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3980",
doi="10.1080/00223980.1973.9915591",
url="http://dx.doi.org/10.1080/00223980.1973.9915591"
}