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19 results on '"Chhabildas, Nomita"'

2. A Twin Study of the Etiology of High Reading Ability.

Author

Boada, Richard, Willcutt, Erik G., Tunick, Rachel A., Chhabildas, Nomita A., Olson, Richard K., DeFries, John C., and Pennington, Bruce F.

Abstract

Examines the etiology of high reading ability in twin pairs. Suggests that reading ability and its cognitive correlates are on a continuous distribution, with both extremes of the distribution being similarly heritable. Supports the hypothesis that the same cognitive processes that are associated with dyslexia are important for the development of high reading ability. (SG)

Published
2002

9. A Comparison of the Cognitive Deficits in Reading Disability and Attention-Deficit /Hyperactivity Disorder

Author

Willcutt, Erik G., Olson, Richard K., Pennington, Bruce F., Boada, Richard, Ogline, Jamie S., Tunick, Rachel A., and Chhabildas, Nomita A.

Subjects
Psychiatric research -- Analysis, Reading disability -- Psychological aspects, Attention-deficit hyperactivity disorder -- Research, Psychology and mental health
Abstract

This study used a nonreferred sample of twins to contrast the performance of individuals with reading disability (RD; n = 93), attention-deficit/hyperactivity disorder (ADHD; n = 52), RD and ADHD (n = 48), and neither RD nor ADHD (n = 121) on measures of phoneme awareness (PA) and executive functioning (EF). Exploratory factor analysis of the EF measures yielded underlying factors of working memory, inhibition, and set shifting. Results revealed that ADHD was associated with inhibition deficits, whereas RD was associated with significant deficits on measures of PA and verbal working memory. The RD + ADHD group was most impaired on virtually all measures, providing evidence against the phenocopy hypothesis as an explanation for comorbidity between RD and ADHD.

Published
2001

10. A Twin MRI Study of Size Variations in the Human Brain

Author

Pennington, Bruce F., Filipek, Pauline A., Lefly, Dianne, Chhabildas, Nomita, Kennedy, David N., Simon, Jack H., Filley, Christopher M., Galaburda, Albert, and DeFries, John C.

Subjects
Usage, Variation (Biology) -- Usage, Human anatomy -- Usage, Brain size -- Usage, Magnetic resonance imaging -- Usage, Brain -- Size
Abstract

* Although it is well known that there is considerable variation among individuals in the size of the human brain, the etiology of less extreme individual differences in brain size [...]

Published
2000

15. The Neuropsychology of Attention Deficit Hyperactivity Disorder.

Author

Lydic, Ralph, Baghdoyan, Helen A., Gozal, David, Molfese, Dennis L., Willcutt, Erik G., Brodsky, Kimberly, Chhabildas, Nomita, Shanahan, Michelle, Yerys, Benjamin, Scott, Ashley, and Pennington, Bruce F.

Abstract

A literature search at the end of 2003 revealed more than 200 published studies that compared groups with and without attention deficit hyperactivity disorder (ADHD) on neuropsychological measures. This rapid accumulation of new knowledge illustrates the potential utility of neuropsychological methods as a tool to refine our understanding of the pathophysiology of ADHD. Yet these studies also underscore the complexity of the neuropsychology of ADHD, and clearly demonstrate how much remains to be learned. [ABSTRACT FROM AUTHOR]

Published
2005
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19. A Comparison of the Cognitive Deficits in Reading Disability and....

Author

Willcut, Erik G., Olson, Richard K., Pennington, Bruce F., Boada, Richard, Ogline, Jamie S., Tunick, Rachel A., and Chhabildas, Nomita A.

Subjects
*COGNITION disorders in children, *READING disability, *ATTENTION-deficit hyperactivity disorder
Abstract

Investigates childhood cognitive deficits in reading disability (RD) and attention-deficit hyperactivity disorder (ADHD) in Colorado. Use of twins in determining performance disability in reading; Analysis of executive functioning factors; Association between RD and ADHD.

Published
2001
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