实验者期待效应

实验者期待效应（experimenter expectancy effect）是实验者效应的其中一种类型，通常是指研究人员对其研究结果的期望会无意中传达给参与者并影响他们的反应。

APA Dictionary

张氏心理学辞典

a type of experimenter effect in which a researcher's expectations about the findings of their research are inadvertently conveyed to participants and influence their responses. This distortion of results arises from participants' reactions to subtle cues (demand characteristics) unintentionally given by the researcher—for example, through body movements, gestures, or facial expressions—and may threaten the ecological validity of the research. The term is often used synonymously with Rosenthal effect.

指从事实验研究时，实验者对受试者的反应有所期待时所产生的影响。实验者对受试者的期待，包括表情、手势以及说话语气等。在实验者期待效应影响下所做的实验，所得的结果将失去有效性。见需要特征（demand characteristics），毕马龙效应（Pygmalion effect）。