| Impaired Acuity of the Approximate Number System Underlies Mathematical Learning Disability (Dyscalculia). | |
| | |
MedLine Citation:
|
PMID: 21679173 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Many children have significant mathematical learning disabilities (MLD, or dyscalculia) despite adequate schooling. The current study hypothesizes that MLD partly results from a deficiency in the Approximate Number System (ANS) that supports nonverbal numerical representations across species and throughout development. In this study of 71 ninth graders, it is shown that students with MLD have significantly poorer ANS precision than students in all other mathematics achievement groups (low, typically, and high achieving), as measured by psychophysical assessments of ANS acuity (w) and of the mappings between ANS representations and number words (cv). This relation persists even when controlling for domain-general abilities. Furthermore, this ANS precision does not differentiate low-achieving from typically achieving students, suggesting an ANS deficit that is specific to MLD. |
| | |
Authors:
|
Michèle M M Mazzocco; Lisa Feigenson; Justin Halberda |
Related Documents
:
|
19592353 - Predicting physical activity of first-year university students: an application of the t... 22121843 - Improving peer supervisor ratings of therapist performance in dialectical behavior ther... 15708163 - Surgical rotations: the good, the bad, and the ugly. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-6-16 |
Journal Detail:
|
Title: Child development Volume: - ISSN: 1467-8624 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
|
Created Date: 2011-6-17 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0372725 Medline TA: Child Dev Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
© 2011 The Authors. Child Development © 2011 Society for Research in Child Development, Inc. |
Affiliation:
|
Kennedy Krieger Institute and Johns Hopkins University Johns Hopkins University. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Why Don't Smart Teens Have Sex? A Behavioral Genetic Approach.
Next Document: A Longitudinal Study of Religious Identity and Participation During Adolescence.