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Published in: Journal of Neural Transmission 1/2012

01-01-2012 | Biological Child and Adolescent Psychiatry - Original Article

Set shifting and working memory in adults with attention-deficit/hyperactivity disorder

Authors: Helena Rohlf, Viola Jucksch, Caterina Gawrilow, Michael Huss, Jakob Hein, Ulrike Lehmkuhl, Harriet Salbach-Andrae

Published in: Journal of Neural Transmission | Issue 1/2012

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Abstract

Compared to the high number of studies that investigated executive functions (EF) in children with attention-deficit/hyperactivity disorder (ADHD), a little is known about the EF performance of adults with ADHD. This study compared 37 adults with ADHD (ADHDtotal) and 32 control participants who were equivalent in age, intelligence quotient (IQ), sex, and years of education, in two domains of EF—set shifting and working memory. Additionally, the ADHDtotal group was subdivided into two subgroups: ADHD patients without comorbidity (ADHD, n = 19) and patients with at least one comorbid disorder (ADHD+, n = 18). Participants fulfilled two measures for set shifting (i.e., the trail making test, TMT and a computerized card sorting test, CKV) and one measure for working memory (i.e., digit span test, DS). Compared to the control group the ADHDtotal group displayed deficits in set shifting and working memory. The differences between the groups were of medium-to-large effect size (TMT: d = 0.48; DS: d = 0.51; CKV: d = 0.74). The subgroup comparison of the ADHD+ group and the ADHD group revealed a poorer performance in general information processing speed for the ADHD+ group. With regard to set shifting and working memory, no significant differences could be found between the two subgroups. These results suggest that the deficits of the ADHDtotal group are attributable to ADHD rather than to comorbidity. An influence of comorbidity, however, could not be completely ruled out as there was a trend of a poorer performance in the ADHD+ group on some of the outcome measures.
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Metadata
Title
Set shifting and working memory in adults with attention-deficit/hyperactivity disorder
Authors
Helena Rohlf
Viola Jucksch
Caterina Gawrilow
Michael Huss
Jakob Hein
Ulrike Lehmkuhl
Harriet Salbach-Andrae
Publication date
01-01-2012
Publisher
Springer Vienna
Published in
Journal of Neural Transmission / Issue 1/2012
Print ISSN: 0300-9564
Electronic ISSN: 1435-1463
DOI
https://doi.org/10.1007/s00702-011-0660-3

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