@article{ref1,
title="Transitions in infant sensorimotor development and the prediction of childhood IQ",
journal="American psychologist, The",
year="1972",
author="McCall, R. B. and Hogarty, P. S. and Hurlburt, N.",
volume="27",
number="8",
pages="728-748",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-066X",
doi="",
url="http://dx.doi.org/"
}