2D pedagogical agents tended to be more effective than 3D agents (g+ = 0.38 vs. g+ = 0.11), as predicted by the redundancy effect and the coherence principle¶
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Evidence · 1 study · quant-synthesisr?·q4·i1small
Currency · newest study 2021 · checked against its sources 2026-10-18 (automated, 1 of 1 entry) · not reviewed by a person
Subclaims¶
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This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q4 i1 2D agents (g+ = 0.38) tended to be more effective than 3D agents (g+ = 0.11), a pattern the authors attribute to the redundancy effect of cognitive load theory and the coherence principle of cognitive theory of multimedia learning. → Castro-Alonso 2021
Evidence¶
Castro-Alonso 2021¶
Castro-Alonso, J. C., Wong, R. M., Adesope, O. O., & Paas, F. (2021). Effectiveness of Multimedia Pedagogical Agents Predicted by Diverse Theories: a Meta-Analysis. Educational Psychology Review. https://doi.org/10.1007/s10648-020-09587-1
q4 · i1 · quant-synthesis · r?
Meta-analytic moderator comparison of agent dimensionality across the pooled effect sizes. Printed moderator effect sizes: g+ = 0.38 for 2D agents versus g+ = 0.11 for 3D agents; the article hedges the difference as a tendency.
"As predicted by the redundancy effect of cognitive load theory and the coherence principle of cognitive theory of multimedia learning, 2D agents ( g + = 0.38) tended to be more effective than 3D agents ( g + = 0.11)."
Discussion¶
Related Claims¶
- Multimedia learning principles are not clearly attributable to the multicomponent model or to applied multimedia theories — related
- Redundant on-screen text impairs learning when it competes with a visualization, though written text duplicating narration alone can help — related
- Multimedia design principles improve learning by g = 0.38 on average across the 11 largest reviews, an effect the authors call moderate, with large differences between principles — related
- Learning with multimedia pedagogical agents is more effective than learning without these agents, with a small overall effect (g+ = 0.20) — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
2d-agents-tend-more-effective-than-3d |
title |
2D pedagogical agents tended to be more effective than 3D agents (g+ = 0.38 vs. g+ = 0.11), as predicted by the redundancy effect and the coherence principle |
description |
2D pedagogical agents tended to be more effective than 3D agents (g+ = 0.38 vs. |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2021 |
source_checked |
2026-10-18 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — castro-alonso-2021 |
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