@article{ref1,
title="Differential effects of reward and punishment on group performance by normal and psychotic males",
journal="Psychological reports",
year="1972",
author="Fraas, L. A.",
volume="30",
number="2",
pages="399-403",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-2941",
doi="",
url="http://dx.doi.org/"
}