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A twin study of mathematics disability.

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Title: A twin study of mathematics disability.
Authors: Alarcon M (AUTHOR), DeFries JC (AUTHOR), Light JG (AUTHOR), Pennington BF (AUTHOR)
Source: Journal of Learning Disabilities. Nov/Dec1997, Vol. 30 Issue 6, p617-623. 7p.
Abstract: Although results obtained from recent twin and adoption studies suggest that individual differences in mathematics performance are due in part to heritable influences, no genetic analysis of mathematics disability (MD) has been previously reported. In this article we present data from the first twin sample ascertained for mathematics deficits (40 identical and 23 same-sex fraternal twin pairs in which at least one member had MD). When mathematics performance data from these twin pairs were subjected to a multiple regression analysis, evidence for a significant genetic etiology was obtained. However, tests for the differential etiology of MD as a function of reading performance level were nonsignificant. Results of this first twin study of MD indicate that the condition is significantly heritable, but data from additional twin pairs will be required to test hypotheses of differential etiology more rigorously. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Learning Disabilities is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: A twin study of mathematics disability.
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  Data: <searchLink fieldCode="AR" term="%22Alarcon+M%22">Alarcon M</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22DeFries+JC%22">DeFries JC</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Light+JG%22">Light JG</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pennington+BF%22">Pennington BF</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Learning+Disabilities%22">Journal of Learning Disabilities</searchLink>. Nov/Dec1997, Vol. 30 Issue 6, p617-623. 7p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Although results obtained from recent twin and adoption studies suggest that individual differences in mathematics performance are due in part to heritable influences, no genetic analysis of mathematics disability (MD) has been previously reported. In this article we present data from the first twin sample ascertained for mathematics deficits (40 identical and 23 same-sex fraternal twin pairs in which at least one member had MD). When mathematics performance data from these twin pairs were subjected to a multiple regression analysis, evidence for a significant genetic etiology was obtained. However, tests for the differential etiology of MD as a function of reading performance level were nonsignificant. Results of this first twin study of MD indicate that the condition is significantly heritable, but data from additional twin pairs will be required to test hypotheses of differential etiology more rigorously. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Learning Disabilities is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1177/002221949703000605
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        Text: English
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            NameFull: DeFries JC
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            NameFull: Light JG
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              Text: Nov/Dec1997
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              Y: 1997
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