@article{ref1,
title="Reaction Time as a Measure of Span of Attention",
journal="Journal of psychology, The",
year="1948",
author="Saltzman, I. J. and Garner, W. R.",
volume="25",
number="2",
pages="227-241",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0022-3980",
doi="10.1080/00223980.1948.9917373",
url="http://dx.doi.org/10.1080/00223980.1948.9917373"
}