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  • Title: Subtypes of mathematical learning disability and their antecedents: A cognitive diagnostic approach.
    Author: Ouyang X, Zhang X, Räsänen P, Koponen T, Lerkkanen MK.
    Journal: Child Dev; 2023 May; 94(3):633-647. PubMed ID: 36511160.
    Abstract:
    Using cognitive diagnostic modeling (CDM), this study identified subtypes of mathematics learning disability (MLD) based on children's numerical skills and examined the language and spatial precursors of these subtypes. Participants were 99 MLD children and 420 low achievers identified from 1839 Finnish children (966 boys) who were followed from preschool (age 6) to fourth grade (2007-2011). Five subtypes were identified: the arithmetic fluency deficit only subtype, the counting deficit subtype, the pervasive deficit subtype, the symbolic deficit subtype, and the counting and concept deficit subtype. Different subtypes depended on different constellations of language and spatial deficits. Findings highlight the effectiveness of CDM in identifying MLD subtypes and underscore the importance of understanding the specific deficits and antecedents of the subtypes.
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