Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M4472

Change Blindness

Change Blindness
BehaviorHigh supportPsychology
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Version 1.0.0 · Updated 2026-07-28

CORE DEFINITION

Change blindness is a psychological phenomenon in which changes in a visual scene go unnoticed by the observer. For example, observers often fail to notice major differences introduced when an image flickers off and on. Causes include obstacles in the scene, eye movements, changes in location, or lack of attention. Change blindness is one of the surprising phenomena discovered by laboratory scientists and psychologists.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Change blindness is a psychological phenomenon in which changes in a visual scene go unnoticed by the observer. For example, observers often fail to notice major differences introduced when an image flickers off and on. Causes include obstacles in the scene, eye movements, changes in location, or lack of attention. Change blindness is one of the surprising phenomena discovered by laboratory scientists and psychologists.

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Anchor fast decisions

Same as 'change blindness'—the visual system sparsely samples the scene and fills in with predictions. When changes occur during attentional gaps (blinks, screen flickers, saccades) or are occluded, there is no persistent representation for comparison, so even major changes go unnoticed. This explains the 'boiling frog' effect: changes that occur during attentional blinks are ignored.

MINIMUM ACTION

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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E5%8F%98%E5%8C%96%E7%9B%B2%E8%A7%86ZH · Explicit
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