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MENTAL MODEL · M6400

Observer-Expectancy Effect

Observer-Expectancy Effect
Learn & MetacognitionHigh supportCognitive Science
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

The cognitive bias of the researcher (or manager) subconsciously influences the subjects (or employees) through micro-expressions and tone of voice, causing results to shift in the expected direction. The Clever Hans effect is an extreme case. ###

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Double-blind management. If you want genuine feedback, do not presuppose the answer in your questions (e.g., "You think this is great, right?"). Stay neutral, even deliberately hide your preferences, to see the truth.

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Anchor fast decisions

Observer expectancy effect: the observer unconsciously makes data conform to their expectations, a type of experimenter/observer bias.

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Observer-expectancy_effectZH · Explicit
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