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MENTAL MODEL · M8723

Multi-Attribute Utility Theory, MAUT

Multi-Attribute Utility Theory, MAUT
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Updated 2026-08-13

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INTRODUCTION

English translation pending.

CORE DEFINITION

Multi-attribute utility theory turns each option's multiple attributes into a single utility value through utility functions and weights, then compares options by their aggregate utility. It answers the apples and oranges problem: how do you compare things measured in different units? By converting every attribute onto one utility scale, so trade-offs become explicit and the comparison becomes defensible rather than intuitive.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Decompose first: split each option into its separate attributes before judging anything. - Convert to one scale: give each attribute a utility and a weight, and say why. - Aggregate and stress test: add or multiply per the rule, then check how the ranking shifts when the weights move.

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Anchor fast decisions

Comparing raw attributes across units has no common axis, so the comparison silently runs on whichever attribute is loudest. A utility function maps each attribute onto a shared scale of desirability, and the weights rank how much each matters; aggregation then forces the trade-off into the open where the weights can be argued about.

MINIMUM ACTION

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Multi-attribute_utilityZH · Explicit
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