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Gepubliceerd in: Research on Child and Adolescent Psychopathology 5/2006

01-10-2006 | Original Paper

Processing Speed Deficits in Attention Deficit/Hyperactivity Disorder and Reading Disability

Auteurs: Michelle A. Shanahan, Bruce F. Pennington, Benjamin E. Yerys, Ashley Scott, Richard Boada, Erik G. Willcutt, Richard K. Olson, John C. DeFries

Gepubliceerd in: Research on Child and Adolescent Psychopathology | Uitgave 5/2006

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Abstract

The goal of the current study was to test whether deficits in processing speed (PS) may be a shared cognitive risk factor in reading disability (RD) and Attention Deficit/Hyperactivity Disorder (ADHD), which are known to be comorbid. Literature on ADHD and RD suggests that deficits on tasks with a speeded component are seen in both of these disorders individually. The current study examined a wide range of speeded tasks in RD, ADHD, comorbid RD+ADHD, and a control group to test whether RD and ADHD have similar profiles of PS deficits, and whether these deficits are shared by the two disorders. The results suggest that a general PS deficit exists in both clinical groups compared to controls, although children with RD demonstrate greater PS deficits than children with ADHD. Two tests (underadditivity and partial correlations) were conducted to test whether these PS deficits are shared. Since we found that PS deficits were underadditive in the comorbid group and that partialling PS reduced the correlation between RD and ADHD, it appears that PS is a shared cognitive risk factor that may help explain the comorbidity of these two disorders.
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Metagegevens
Titel
Processing Speed Deficits in Attention Deficit/Hyperactivity Disorder and Reading Disability
Auteurs
Michelle A. Shanahan
Bruce F. Pennington
Benjamin E. Yerys
Ashley Scott
Richard Boada
Erik G. Willcutt
Richard K. Olson
John C. DeFries
Publicatiedatum
01-10-2006
Gepubliceerd in
Research on Child and Adolescent Psychopathology / Uitgave 5/2006
Print ISSN: 2730-7166
Elektronisch ISSN: 2730-7174
DOI
https://doi.org/10.1007/s10802-006-9037-8

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