People with MLD show a large pooled deficit in mathematics performance versus typically performing peers (g = 1.52)¶
Claim · All claims
Evidence · 1 study · quant-synthesisr2·q3·i3large
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person · recheck by 2028: baselines and conditions change
Subclaims¶
Reading the evidence codes
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q3 i3 Across 283 effect sizes from 145 studies, MLD groups performed substantially worse than typically performing groups in mathematics, Hedges's g = 1.52, p < .001. → Kroesbergen 2023
Evidence¶
Kroesbergen 2023¶
Kroesbergen, E. H.; Huijsmans, M. D. E.; Friso-van den Bos, I. (2023). A Meta-Analysis on the Differences in Mathematical and Cognitive Skills Between Individuals With and Without Mathematical Learning Disabilities. Review of Educational Research. https://doi.org/10.3102/00346543221132773
q3 · i3 · quant-synthesis · r2
Meta-analytic unconditional model of 283 effect sizes from 145 studies comparing MLD and typically performing groups on mathematics. The pooled difference was "Hedges's g = 1.52", significant at p < .001, with 90% of variation attributed to true effect-size differences.
"The weighted mean difference of Hedges's g = 1.52 demonstrated the expected significant differences between the typically performing groups and MLD groups, with p < .001."
Discussion¶
Related Claims¶
- People with MLD show lower number sense than typically developing peers (g = 0.88), with the largest deficits on mapping tasks — related
- People with MLD show medium pooled deficits in working memory (g = 0.68) and rapid automatized naming (g = 0.70) — related
- Children with LA show a less severe impairment pattern than children with MLD, differing only on symbolic approximate addition — related
- Children with MLD and LA are less accurate than TA children on symbolic but not non-symbolic approximate addition — related
- No profile distinguishes more severe, persistent, or specific MLD from less severe MLD on cognitive skills — related
- First graders with MLD are slower than typically achieving peers on symbolic but not non-symbolic numerical magnitude comparison — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
mld-large-pooled-math-deficit |
title |
People with MLD show a large pooled deficit in mathematics performance versus typically performing peers (g = 1.52) |
description |
People with MLD show a large pooled deficit in mathematics performance versus typically performing peers (g = 1.52) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2023 |
recheck_by |
2028 |
generated |
by process:wiki-ingest on 2026-10-20 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — kroesbergen-2023 |
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