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| Journal of Learning… | 2 |
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| D'Angiulli, Amedeo | 1 |
| DeFries, John C. | 1 |
| Olson, Richard K. | 1 |
| Pennington, Bruce F. | 1 |
| Siegel, Linda S. | 1 |
| Wadsworth, Sally J. | 1 |
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| Journal Articles | 2 |
| Reports - Research | 2 |
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Peer reviewedD'Angiulli, Amedeo; Siegel, Linda S. – Journal of Learning Disabilities, 2003
Data from 143 children with reading disabilities (RD), 100 with arithmetic disabilities (AD), and 121 controls (ages 6-16) found the RD and AD groups had significantly lower scores on all verbal IQ subtests. Many also showed significant differences between verbal and performance IQ scores, but so did many controls. (Contains references.)…
Descriptors: Disability Identification, Elementary Secondary Education, Intelligence Differences, Intelligence Quotient
Peer reviewedWadsworth, Sally J.; Olson, Richard K.; Pennington, Bruce F.; DeFries, John C. – Journal of Learning Disabilities, 2000
Composite reading performance data from 223 pairs of identical twins and 169 same-gender fraternal twins in which at least one member was classified with reading disability were subjected to multiple regression analysis. Results indicated that the genetic etiology of reading disability differs as a linear function of IQ. (Contains extensive…
Descriptors: Biological Influences, Children, Disability Identification, Environmental Influences
