Addition fluency captures more shared variance with serial retrieval fluency than subtraction fluency does¶
Claim · All claims
Evidence · 1 study · associationalr2·q3
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q3 i? At the covariance level, addition fluency captured more shared variance with serial retrieval fluency (β = -.30) than subtraction fluency did (β = -.24). → Rautiainen 2026
Evidence¶
Rautiainen 2026¶
Rautiainen, J., Aro, T., Aro, M., Tolvanen, A., & Koponen, T. (2026). Hierarchical Nature of Arithmetic Skills: Similarities and Differences Between Arithmetic Operations. Journal of Educational Psychology, Early online. https://doi.org/10.1037/edu0001066
q3 · i? · associational · r2
Secondary covariance-level comparison between the addition and subtraction SEM models in the longitudinal study (n = 207). The article reports "addition fluency captures more shared variance with serial retrieval fluency (β = -.30) than subtraction fluency (β = -.24)".
"This is also evident in the covariance level among models, where addition fluency captures more shared variance with serial retrieval fluency (β = -.30) than subtraction fluency (β = -.24)."
Discussion¶
Related Claims¶
- In the reading fluency contrast model, numerical abilities and serial retrieval fluency predict multiplication fluency but working memory does not, indicating partial domain-specificity — related
- Addition fluency strongly predicts third-grade multiplication fluency, and a significant working memory association emerges after controlling for addition fluency — related
- Subtraction fluency predicts third-grade multiplication fluency on par with addition fluency, with a similar emergent working memory association — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
addition-captures-more-retrieval-variance-than-subtraction |
title |
Addition fluency captures more shared variance with serial retrieval fluency than subtraction fluency does |
description |
Addition fluency captures more shared variance with serial retrieval fluency than subtraction fluency does |
status |
review |
evidence_strength |
weak |
newest_evidence |
2026 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — rautiainen-2026 |
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