Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M7500

Hearsay Evidence Rule

Hearsay Evidence Rule
CultureHigh supportLaw
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Updated 2026-08-10

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INTRODUCTION

English translation pending.

CORE DEFINITION

A legal principle holding that hearsay, an out-of-court statement offered to prove the truth of what it asserts, is generally inadmissible because the original declarer is absent and cannot be cross-examined or observed. Its proposition is that secondhand information is inherently less reliable than direct testimony, so first-hand and second-hand evidence must be treated differently. Qualifier: numerous exceptions apply where the statement carries particular guarantees of trustworthiness, such as dying declarations.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Source tracing: Separate first-hand observation from second-hand report before relying on any claim. - Weight discounting: Reduce the influence of information whose original source cannot be questioned. - Reliability testing: Ask whether the original speaker can be examined before treating a statement as proof.

anchor

Anchor fast decisions

A claim's reliability depends on the conditions under which it was produced, and cross-examination is the mechanism that exposes distortion, bias, and faulty memory. When the original speaker is absent, none of that testing is possible, so the statement reaches the decision-maker unexamined. Excluding such statements by default shifts the burden onto evidence whose source can actually be tested.

MINIMUM ACTION

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Source support: Explicit

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