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MENTAL MODEL · M2514

Pollyanna Principle

Pollyanna Principle
Learn & MetacognitionHigh supportCognitive Psychology
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Subconscious 'positive bias'. The human brain tends to process pleasant words more accurately and quickly than unpleasant ones; and in memory, people tend to romanticize the past (believing it was better than the present). -

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Disenchanting the nostalgia filter. - 'Each generation is worse than the last' is a millennia-old illusion. We think the past was beautiful because the brain automatically filters out painful memories. When reviewing projects or evaluating historical data, one must artificially correct this 'rose-colored filter', deliberately digging out forgotten painful details, otherwise lessons will never be learned.

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Positive information processing has neural and attentional preferences; pleasant stimuli are more easily encoded and retrieved; during recall, negative details decay more readily, forming a 'rose-colored' bias. This effect makes judgments about the present and future systematically overly optimistic.

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Pollyanna_principleZH · Explicit
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