@article{ref1,
title="The tetrad-difference criterion and the measurement of mental traits",
journal="Annals of the New York Academy of Sciences",
year="1931",
author="Garrett, Henry E. and Anastasi, Anne",
volume="33",
number="1",
pages="235-281",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0077-8923",
doi="10.1111/j.1749-6632.1931.tb55201.x",
url="http://dx.doi.org/10.1111/j.1749-6632.1931.tb55201.x"
}