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experimenter effect

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noun

psychol the influence of an experimenter's expectations on his results

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for experimenter effect

experimenter effect

n.

The influence of the experimenter's behavior, personality traits, or expectancies on the results of his or her own research.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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