MENTAL MODEL · M4565

Risky Shift

BehaviorHigh supportSocial Psychology

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Updated 2026-08-02

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INTRODUCTION

English translation pending.

CORE DEFINITION

Documented by James Stoner and later folded into the broader study of group polarization, the risky shift describes how discussion moves collective choices toward greater risk than the average member would have chosen. Two mechanisms are usually cited: diffusion of responsibility, since no individual owns the outcome, and a cultural premium on boldness that amplifies the most daring voices. It shows that groups are not automatically more cautious than individuals.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Suspect the drift: check whether a group is becoming bolder simply because it is a group - Collect judgments first: have each member record a risk assessment before any discussion begins - Assign ownership: name a single accountable person so responsibility cannot dissolve into the room

anchor

Anchor fast decisions

Responsibility spreads across the group, so each member feels less exposed to the consequences of failure than they would alone. At the same time, discussion rewards the most confident and daring arguments, which shifts the shared reference point toward risk. The result is a collective choice more extreme than any individual's starting position.

MINIMUM ACTION

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Practice this model in one real situation:

When a group decision involves risk, expect the outcome to be bolder than individual views. 2. Have every member write down an independent risk judgment before discussion starts. 3. Name one accountable owner for the final decision. 4. Assign a member to argue the cautious case so the drift is contested.

Check to track your progress (stored locally)

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Source support: Explicit

link
en.wikipedia.orghttps://en.wikipedia.org/wiki/Group_polarizationZH · Explicit
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