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(psychol) the influence of an experimenter's expectations on his results. experimenter effect in Medicine. experimenter effect n. The influence of the experimenter's behavior, personality traits, or expectancies on the results of his or her own research.
The noun EXPERIMENTER BIAS has 1 sense: 1. (psychology) bias introduced by an experimenter whose expectations about the outcome of the experiment can be subtly communicated to the participants in the experiment.Familiarity information: EXPERIMENTER BIAS used as a noun is very rare.he noun EXPERIMENTER BIAS has 1 sense: 1. (psychology) bias introduced by an experimenter whose expectations about the outcome of the experiment can be subtly communicated to the participants in the experiment.