A comparison of the cognitive deficits in reading disability and attention-deficit/hyperactivity disorder

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

Research output: Contribution to journalArticle

302 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)157-172
Number of pages16
JournalJournal of Abnormal Psychology
Volume110
Issue number1
DOIs
StatePublished - 2001
Externally publishedYes

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Attention Deficit Disorder with Hyperactivity
Short-Term Memory
Reading
Statistical Factor Analysis
Comorbidity
Inhibition (Psychology)

ASJC Scopus subject areas

  • Clinical Psychology
  • Experimental and Cognitive Psychology
  • Psychology(all)

Cite this

A comparison of the cognitive deficits in reading disability and attention-deficit/hyperactivity disorder. / Willcutt, Erik G.; Pennington, Bruce F.; Boada, Richard; Ogline, Jamie S.; Tunick, Rachel A.; Chhabildas, Nomita A.; Olson, Richard K.

In: Journal of Abnormal Psychology, Vol. 110, No. 1, 2001, p. 157-172.

Research output: Contribution to journalArticle

Willcutt, Erik G. ; Pennington, Bruce F. ; Boada, Richard ; Ogline, Jamie S. ; Tunick, Rachel A. ; Chhabildas, Nomita A. ; Olson, Richard K. / A comparison of the cognitive deficits in reading disability and attention-deficit/hyperactivity disorder. In: Journal of Abnormal Psychology. 2001 ; Vol. 110, No. 1. pp. 157-172.
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