@article{ref1,
title="Surprise as an indication of spontaneous categorization",
journal="Bulletin of the Psychonomic Society",
year="1988",
author="Kahneman, Daniel and Ocurry, S.",
volume="26",
number="6",
pages="507-507",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-5054",
doi="",
url="http://dx.doi.org/"
}