Group differences in math skills between LD and comorbid groups are more pronounced in symbolic than non-symbolic math tasks¶
Claim · All claims
Evidence · 1 study · quant-synthesisr2·q3
Currency · newest study 2023 · 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? For C-RDMD and MD-RDMD comparisons, effect sizes were higher in symbolic verbal-auditory and symbolic visual processing tasks than in non-symbolic approximate magnitude tasks. → Nurit Viesel-Nordmeyer 2023
Evidence¶
Nurit Viesel-Nordmeyer 2023¶
Nurit Viesel-Nordmeyer, Julia Reuber, Jörg-Tobias Kuhn, Kristina Moll, Heinz Holling, Christian Dobel. (2023). Cognitive Profiles of Children with Isolated and Comorbid Learning Difficulties in Reading and Math: a Meta-analysis. Educational Psychology Review. https://doi.org/10.1007/s10648-023-09735-3
q3 · i? · quant-synthesis · r2
Post hoc moderator testing (Tukey's HSD, Holm-corrected) on math outcome categories coded via the Triple-Code Model in the meta-analysis. Differences were "higher differences between groups in math tasks addressing symbolic verbal-auditory and symbolic visual processing" than non-symbolic tasks.
"Results for "type of math outcomes" in C-RDMD as well as MD-RDMD indicated higher differences between groups in math tasks addressing symbolic verbal-auditory and symbolic visual processing compared to math tasks addressing non-symbolic approximate processing."
Discussion¶
Related Claims¶
- The math deficit profile of children with comorbid RDMD is additive: it equals the sum of the deficits of isolated RD and MD groups — related
- Executive function deficits in comorbid RDMD show some evidence of under-additivity, especially in inhibition, shifting, and updating — related
- In reading-related outcomes, group differences involving RD or RDMD are largest for reading tasks and phonological processing and smallest for RAN — related
- The reading deficit profile of children with comorbid RDMD is additive relative to isolated RD and MD — related
- The comorbid RD+MD group is more impaired than groups with RD only or MD only on seven of ten neuropsychological composites — related
- Children with comorbid RDMD are significantly more impaired than children with isolated RD or MD in math, reading, and executive function outcomes — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
math-group-differences-symbolic-tasks |
title |
Group differences in math skills between LD and comorbid groups are more pronounced in symbolic than non-symbolic math tasks |
description |
Group differences in math skills between LD and comorbid groups are more pronounced in symbolic than non-symbolic math tasks |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2023 |
generated |
by process:wiki-ingest on 2026-10-19 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — nurit-viesel-nordmeyer-2023 |
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