Low discriminative power of WISC cognitive profile in developmental dyscalculia.
Developmental dyscalculia
Diagnosis
Math disability
Specific learning disabilities
Journal
Research in developmental disabilities
ISSN: 1873-3379
Titre abrégé: Res Dev Disabil
Pays: United States
ID NLM: 8709782
Informations de publication
Date de publication:
May 2023
May 2023
Historique:
received:
29
06
2022
revised:
02
02
2023
accepted:
08
03
2023
medline:
11
4
2023
pubmed:
19
3
2023
entrez:
18
3
2023
Statut:
ppublish
Résumé
The role of domain-general cognitive abilities in the etiology of Developmental Dyscalculia (DD) is a hotly debated issue. In the present study, we tested whether WISC-IV cognitive profiles can be useful to single out DD. Using a stringent 2-SD cutoff in a standardized numeracy battery, we identified children with DD (N = 43) within a clinical sample referred for assessment of learning disability and compared them in terms of WISC cognitive indexes to the remaining children without DD (N = 100) employing cross-validated logistic regression. Both groups showed higher Verbal Comprehension and Perceptual Reasoning than Working Memory and Processing Speed, and DD scores were generally lower. Predictive accuracy of WISC indexes in identifying DD individuals was low (AUC = 0.67) and it dropped to chance level in discriminating DD from selected controls (N = 43) with average math performance but matched on global IQ. The inclusion of a visuospatial memory score as an additional predictor did not improve classification accuracy. These results demonstrate that cognitive profiles do not reliably discriminate DD from non-DD children, thereby weakening the appeal of domain-general accounts.
Sections du résumé
BACKGROUND
BACKGROUND
The role of domain-general cognitive abilities in the etiology of Developmental Dyscalculia (DD) is a hotly debated issue.
AIMS
OBJECTIVE
In the present study, we tested whether WISC-IV cognitive profiles can be useful to single out DD.
METHODS AND PROCEDURES
METHODS
Using a stringent 2-SD cutoff in a standardized numeracy battery, we identified children with DD (N = 43) within a clinical sample referred for assessment of learning disability and compared them in terms of WISC cognitive indexes to the remaining children without DD (N = 100) employing cross-validated logistic regression.
OUTCOMES AND RESULTS
RESULTS
Both groups showed higher Verbal Comprehension and Perceptual Reasoning than Working Memory and Processing Speed, and DD scores were generally lower. Predictive accuracy of WISC indexes in identifying DD individuals was low (AUC = 0.67) and it dropped to chance level in discriminating DD from selected controls (N = 43) with average math performance but matched on global IQ. The inclusion of a visuospatial memory score as an additional predictor did not improve classification accuracy.
CONCLUSIONS AND IMPLICATIONS
CONCLUSIONS
These results demonstrate that cognitive profiles do not reliably discriminate DD from non-DD children, thereby weakening the appeal of domain-general accounts.
Identifiants
pubmed: 36933361
pii: S0891-4222(23)00056-2
doi: 10.1016/j.ridd.2023.104478
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
104478Informations de copyright
Copyright © 2023 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Conflict of Interest None.