Cognitive Scaffold

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MENTAL MODEL · M0241

The Reasonable Person

The Reasonable Person
CultureHigh supportLaw
Included
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Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

A fictional hypothetical person in law, representing the average level of caution, knowledge, and rationality of ordinary members of society. Judges use this standard to measure whether a defendant's conduct constitutes negligence.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

Establish an objective benchmark for judgment. When handling disputes or making rules, do not use the 'genius' or 'saint' as the standard, nor the 'fool', but rather the reaction of a 'reasonable ordinary person' in similar circumstances as the yardstick for compliance.

anchor

Anchor fast decisions

The reasonable person standard is an objective standard assumed in law and economics, based on the behavior of a normally prudent person, used to judge negligence or reasonable expectations. It abstracts the individual into a person with general knowledge and a duty of care.

MINIMUM ACTION

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Source support: Explicit

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