Cognitive Scaffold

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MENTAL MODEL · M4112

Dual Coding Theory

Dual Coding Theory
Learn & MetacognitionHigh supportCognitive Psychology
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Updated 2026-08-01

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INTRODUCTION

English translation pending.

CORE DEFINITION

Proposed by Allan Paivio in the 1970s. The theory holds that human cognition uses two functionally distinct but interconnected systems: a verbal system for language-based codes and a nonverbal system for imagery and perceptual codes. Information represented in both systems is remembered better than information held in one, because two independent retrieval routes remain available and the trace is reinforced twice. The advantage is largest for concrete material that is easy to picture and smallest for abstract material that resists imagery.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Presentation pairing: show text and a relevant image together rather than choosing one. - Imagery translation: convert abstract claims into pictures or metaphors you can see. - Review routing: rehearse the same idea through both the words and the image.

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Anchor fast decisions

Two separate coding systems mean two independent ways to reach the same item later. If the verbal trace fades, the image can still cue recall, and vice versa, so the probability that at least one route survives is higher than for single coding. Concrete words and pictures are dual coded almost automatically, which is why they outlast abstract strings that only the verbal system can hold.

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Source support: Explicit

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    en.wikipedia.orghttps://en.wikipedia.org/wiki/Dual-coding_theoryZH · Explicit
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