Equation memory shows a strong validity effect (valid > invalid recall) that interacts with equation length¶
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Evidence · 1 study · associationalr2·q3
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person
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q3 i? A repeated measures ANOVA revealed substantially higher recall for valid than invalid equations, with significant length and validity-by-length interaction effects. → Geary David C. 2015
Evidence¶
Geary David C. 2015¶
Geary David C., Hoard Mary K., Nugent Lara, Rouder Jeffrey N. (2015). Individual Differences in Algebraic Cognition: Relation to the Approximate Number and Sematic Memory Systems. Journal of experimental child psychology. https://doi.org/10.1016/j.jecp.2015.07.010
q3 · i? · associational · r2
Repeated measures ANOVA on the equation memory task in the 171-student sample, confirming Sweller and Cooper's schema finding. The interaction arose because a higher percentage of elements was recalled for valid longer than shorter equations, with the opposite for invalid equations.
"A 2 (validity) by 2 (length) repeated measures ANOVA revealed substantially higher recall for valid items, F(1,170) = 506.35, p<.0001, as well as significant length, F(1,170) = 8.16, p=.0048, and interaction, F(1,170) = 111.68, p<.0001, effects."
Discussion¶
Related Claims¶
- Prior knowledge, worked-example type (full vs completion) and task difficulty show a significant three-way interaction on an algebra posttest, but not on self-reported cognitive load — related
- Sequential presentation of memory items produces less time-based forgetting than simultaneous presentation (Experiment 1) — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
equation-memory-validity-effect-length-interaction |
title |
Equation memory shows a strong validity effect (valid > invalid recall) that interacts with equation length |
description |
Equation memory shows a strong validity effect (valid > invalid recall) that interacts with equation length |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2015 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — geary-david-c-2015 |
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