Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M0905

Triune Brain

Triune Brain
BehaviorHigh supportEvolutionary Psychology
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Three layers of brain evolution: reptilian brain (instinct/survival/freeze), limbic system (emotion/mammalian brain), neocortex (rationality/primate brain).

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Persuasion order: When trying to persuade others, you must first soothe the reptilian brain (sense of safety), then move the limbic system (emotional resonance), and finally engage the neocortex (logic and data). If the order is reversed, the other person will physically 'not listen'.

anchor

Anchor fast decisions

Brain function is divided into three layers: reptilian brain (instinct), emotional brain (limbic system), and rational brain (neocortex). Behavior is determined by competition/cooperation among the three.

MINIMUM ACTION

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Source support: Explicit

  • link
    en.wikipedia.orghttps://en.wikipedia.org/wiki/Triune_brainZH · Explicit
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