In scientific research and psychotherapy, the subject-expectancy effect is a form of reactivity that occurs when a research subject expects a given result and therefore unconsciously affects the outcome, or reports the expected result rather than what actually happened. Because it can significantly bias the results of an experiment, especially one involving human subjects, double-blind methodology is used to try to eliminate it, and it is related to, but distinct from, the observer-expectancy effect, in which it is the researcher's own expectation that biases the outcome.
Facts
Core ClaimThe subject-expectancy effect occurs when a research subject's own expectation of a result unconsciously affects the outcome, or leads the subject to report the expected result rather than what actually happened. 1 Classification
Type of Phenomenon Sources
1. Subject-expectancy effect, Wikipedia
opening definition paragraph
the subject-expectancy effect, is a form of reactivity that occurs when a research subject expects a given result and therefore unconsciously affects the outcome, or reports the expected result.
lead section, phenomenon-kind classification
In scientific research and psychotherapy, the subject-expectancy effect, is a form of reactivity that occurs when a research subject expects a given result and therefore unconsciously affects the outcome, or reports the expected result.
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