Adults with developmental dyscalculia score significantly lower than controls on the formal NADL test of school-acquired numerical abilities¶
Claim · All claims
Evidence · 1 study · associationalr2·q3·i3large
Currency · newest study 2022 · checked against its sources 2026-10-18 (automated, 1 of 1 entry) · not reviewed by a person
Subclaims¶
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q3 i3 Adults with DD scored significantly lower than controls on the NADL Formal Test total (r = -0.665, p < 0.001, one-sided). → Vigna Giulia 2022
Evidence¶
Vigna Giulia 2022¶
Vigna Giulia, Ghidoni Enrico, Burgio Francesca, Danesin Laura, Angelini Damiano, Benavides-Varela Silvia, Semenza Carlo. (2022). Dyscalculia in Early Adulthood: Implications for Numerical Activities of Daily Living. Brain Sciences. https://doi.org/10.3390/brainsci12030373
q3 · i3 · associational · r2
Wilcoxon rank-sum comparison of 26 adults with DD and 26 controls on the NADL Formal Test, reported in Table 1. The DD group mean was 67.21 (SD 4.11) versus 73.07 (SD 2.71) for controls, with "−0.665" effect size and p < 0.001 after Holm–Bonferroni correction.
"TOTAL FORMAL * 77 67.21 4.11 73.07 2.71 71 <0.001 −0.665 0.000"
Discussion¶
Learner Variables¶
- Learning Disabilities and Developmental Differences — predictor: learners who differ on it differ in outcomes
Related Claims¶
- Adults with developmental dyscalculia are impaired in everyday numerical tasks, particularly time estimation, measure, and money usage — related
- Adults with developmental dyscalculia are aware of their numerical difficulties in everyday life — related
- Arithmetic deficits in adults with DD concentrate in mental calculation, arithmetical rules, and written calculation, with number comprehension and transcoding preserved — related
- Children with ADHD show significantly lower learning ability scores than control children — related
- Developmental dyscalculia persists into adulthood when untreated, affecting 5–7% of the general population — related
- Numerical difficulties in adults with DD are associated with negative emotions and psychosomatic symptoms traceable to primary school age — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
dd-adults-lower-formal-nadl |
title |
Adults with developmental dyscalculia score significantly lower than controls on the formal NADL test of school-acquired numerical abilities |
description |
Adults with developmental dyscalculia score significantly lower than controls on the formal NADL test of school-acquired numerical abilities |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2022 |
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 — vigna-giulia-2022 |
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