Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M6425

3-12-3

3-12-3
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Updated 2026-08-10

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INTRODUCTION

English translation pending.

CORE DEFINITION

The 3-12-3 format structures a brainstorming session in three phases: three minutes in which each person silently writes as many keywords or ideas as possible, twelve minutes in which randomly paired participants draw three cards and combine them into a rough concept, and three minutes in which each pair pitches that concept to the group. The rhythm prevents the two common failures of brainstorming, an hour of unfocused discussion and domination by the loudest participant.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Start alone: give each person silent time to generate before any discussion begins. - Force combination: pair people randomly and require them to build one concept from the cards. - Pitch fast: present each concept briefly so the group can compare them quickly.

anchor

Anchor fast decisions

Group discussion suppresses generation because speaking and thinking compete, and the first confident voice sets the frame for everyone. Silent ideation produces more raw material, and forced pairing combines material that would never have met in open discussion. The short pitch then evaluates many concepts rather than deepening one too early.

MINIMUM ACTION

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Source support: Explicit

  • link
    gamestorming.comhttps://gamestorming.com/3-12-3-brainstorm/ZH · Explicit
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