How Distinctive Are ADHD and RD? Results of a Double Dissociation Study

Autor/inn/en	de Jong, Christien G. W.; Van De Voorde, Severine; Roeyers, Herbert; Raymaekers, Ruth; Oosterlaan, Jaap; Sergeant, Joseph A.
Titel	How Distinctive Are ADHD and RD? Results of a Double Dissociation Study
Quelle	In: Journal of Abnormal Child Psychology, 37 (2009) 7, S.1007-1017 (11 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0091-0627
DOI	10.1007/s10802-009-9328-y
Schlagwörter	Hyperactivity; Inhibition; Short Term Memory; Language Processing; Chinese; Reading Difficulties; Control Groups; Spatial Ability; Intelligence; Attention Deficit Disorders; Comparative Analysis; Reading Processes + Suchen Sie Ihr Suchwort? Hyperaktivität; Hemmung; Kurzzeitgedächtnis; Sprachverarbeitung; China; Chinesen; Reading difficulty; Leseschwierigkeit; Räumliches Vorstellungsvermögen; Intelligenz; Klugheit; Attention deficit hyperactivity disorder; ADHS; Aufmerksamkeits-Defizit-Hyperaktivitäts-Störung; Aufmerksamkeitsstörung; Leseprozess
Abstract	The nature of the comorbidity between Attention-Deficit/Hyperactivity Disorder (ADHD) and Reading Disability (RD) was examined using a double dissociation design. Children were between 8 and 12 years of age and entered into four groups: ADHD only (n = 24), ADHD+RD (n = 29), RD only (n = 41) and normal controls (n = 26). In total, 120 children participated in the study; 38 girls and 82 boys. Both ADHD and RD were associated with impairments in inhibition and lexical decision, although inhibition and lexical decision were more severely impaired in RD than in ADHD. Visuospatial working memory deficits were specific to children with only ADHD. It is concluded that there was overlap on lexical decision and to a lesser extent on inhibition between ADHD and RD. In ADHD, impairments were dependent on IQ, which suggest that the overlap in lexical decision and inhibition is different in origin for ADHD and RD. The ADHD only group was specifically characterized by deficits in visuospatial working memory. Hence, no double dissociation between ADHD and RD was found on executive functioning and lexical decision. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10