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MENTAL MODEL · M5865

Logic of Appropriateness

Logic of Appropriateness
DecideHigh supportDecision Science
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Updated 2026-08-05

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INTRODUCTION

English translation pending.

CORE DEFINITION

Proposed by James March and Johan Olsen as a counterpart to the logic of consequences, the logic of appropriateness describes decision making driven by identity, rules, and the question of what is fitting in a given situation. Actors match their role and the context to a rule and then act on it. The core claim is that much behavior follows role-based rules rather than outcome calculation. The qualification is that both logics operate together, and which dominates varies with the setting.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Use Role Reading: Ask what identity the person holds and what that identity prescribes here. - Use Rule Identification: Determine which norm the setting makes salient before predicting behavior. - Use Identity Design: Change what people believe their role requires to shift behavior more durably than incentives.

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Anchor fast decisions

Roles carry expectations about how someone in that position behaves, and acting consistently with them maintains identity and standing. Because the matching happens quickly and largely without calculation, behavior follows rules rather than expected outcomes. This makes role-based action more stable and predictable than interest-based action, and it explains conduct that appears to sacrifice advantage.

MINIMUM ACTION

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Source support: Explicit

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