1 definition by HellsMajesty

Top Definition
A psychological term. When a participant is in an experiment you may not get accurate results because they are aware of the experiment and in turn go out of their way to do everything wrong or go against everything u ask them to.
scientist 1 "this guy is doing everything wrong"
scientist 2 "ah a classic case of the screw you effect"
by HellsMajesty November 09, 2007
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