Cognitive Scaffold

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MENTAL MODEL · M6406

Clustering Illusion

Clustering Illusion
Learn & MetacognitionHigh supportCognitive Psychology
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

In truly random sequences (such as coin flips), long runs (e.g., 10 consecutive heads) are inevitable. Human intuition expects randomness to be uniform (alternating heads and tails), so seeing a long run is perceived as having a pattern or being manipulated.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Recognition of randomness. Consecutive rises and falls in the stock market, or the 'hot hand' in basketball, are often just natural clusters in random processes. Do not force causal explanations for purely random fluctuations.

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Human intuition expects randomness to be 'uniformly alternating', but true random processes produce consecutive clusters (runs). When seeing a long run of the same outcome, the brain misjudges it as having a hidden pattern or human manipulation, when in fact it is just the natural form of random fluctuation.

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Source support: Explicit

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    zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E9%9B%86%E7%BE%A4%E9%8C%AF%E8%A6%BAZH · Explicit
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