Expectancy and Experimenter Effects

Effects in which the expectations of a researcher or participant shape what a study finds, including the observer-expectancy effect, the subject-expectancy effect and demand characteristics. A phenomenon belongs here when its cited article describes this influence on research results. Every member sits in the Psychology Atlas as its own page with a definition, cited sources and links to related effects, so the group works as a reading path through Expectancy and Experimenter Effects rather than as a claim that the members share one cause. Where scholars disagree about how an effect should be classified, the member page says so.