A Longitudinal Study of Mathematical Competencies in Children with Specific Mathematics Difficulties Versus Children with Comorbid Mathematics and Reading Difficulties

Overview

Journal Child Dev

Specialty Pediatrics

Date 2003 Jun 11

PMID 12795393

Citations 63

Authors

Nancy C Jordan

Laurie B Hanich

David Kaplan

Affiliations

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Abstract

Mathematical competencies of 180 children were examined at 4 points between 2nd and 3rd grades (age range between 7 and 9 years). Children were initially classified into one of 4 groups: math difficulties but normal reading (MD only), math and reading difficulties (MD-RD), reading difficulties but normal math (RD only), and normal achievement in math and reading (NA). The groups did not differ significantly in rate of development. However, at the end of 3rd grade the MD only group performed better than the MD-RD group in problem solving but not in calculation. The NA and RD only groups performed better than the MD-RD group in most areas. Deficiencies in fact mastery and calculation fluency, in particular, are defining features of MD, with or without RD.

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