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Comorbidity of Arithmetic and Reading Disorder: Basic Number Processing and Calculation in Children With Learning Impairments.

The aim of the present study was to investigate the cognitive profiles of primary school children (age 82-133 months) on a battery of basic number processing and calculation tasks. The sample consisted of four groups matched for age and IQ: arithmetic disorder only (AD; n = 20), reading disorder onl...

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Published in:Journal of Learning Disabilities Vol. 50; no. 3; pp. 298 - 309
Main Authors: Raddatz, Julia, Kuhn, Jörg-Tobias, Holling, Heinz, Moll, Kristina, Dobel, Christian
Format: research tables/charts Journal Article
Published: Sage Publications Inc. May/Jun2017
Online Access:View this record in EBSCOhost
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      dt: May/Jun2017
      vid: 50
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      pid: 344
      pub: Sage Publications Inc.
      place: Thousand Oaks, California
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        atl: Comorbidity of Arithmetic and Reading Disorder: Basic Number Processing and Calculation in Children With Learning Impairments.
      aug:
        au:
          Raddatz, Julia
          Kuhn, Jörg-Tobias
          Holling, Heinz
          Moll, Kristina
          Dobel, Christian
        affil: University of Muenster, Germany
      sug:
        subj:
          Mathematics Education
          Reading Education
          Intellectual Disability
          Human
          Students, Elementary
          Child
          Task Performance and Analysis
          Male
          Female
          Analysis of Covariance
          Aptitude Tests
          Attention Deficit Hyperactivity Disorder
          Reaction Time
          Test-Retest Reliability
          Coefficient alpha
          Descriptive Statistics
          Data Analysis Software
          Funding Source
          Child: 6-12 years
          Male
          Female
      ab: The aim of the present study was to investigate the cognitive profiles of primary school children (age 82-133 months) on a battery of basic number processing and calculation tasks. The sample consisted of four groups matched for age and IQ: arithmetic disorder only (AD; n = 20), reading disorder only (RD; n = 40), a comorbid group (n = 27), and an unimpaired control group (n = 40). Multiple 2 (RD vs. No RD) X 2 (AD vs. No AD) factorial ANCOVAs showed that children with RD had selective impairments in counting and number transcoding efficiency. In contrast, children with AD performed poorly in most tasks, including symbolic and nonsymbolic magnitude comparisons, subitizing, number line estimation, number sets, number transcoding accuracy, and calculation. These findings provide further support that AD is characterized by multiple, heterogeneous underlying deficits. In contrast, RD is associated with specific number processing impairments only if tasks require verbal processing. Taken together, the results fully support the assumption of comorbid additivity of AD and RD.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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