ADHD subtypes and neuropsychological performance in an adult sample

R. Dobson-Patterson, J.G. O'Gorman, R.C.K. Chan, Ho Keung David Shum

Research output: Journal article publicationJournal articleAcademic researchpeer-review

18 Citations (Scopus)


© 2016 Elsevier Ltd.The study investigated, with an adult sample, the hypothesis that differences between subtypes of ADHD on neuropsychological tests contribute to the poor separation of ADHD and healthy groups on tests of this kind. Groups of ADHD inattentive (n = 16) and combined (n = 16) subtypes were carefully identified using DSM-IV criteria, and their performance on 14 measures of attention, memory, and executive function (EF) was compared between subtypes and between the two subtypes combined and a group of healthy controls (n = 30). Multivariate analyses showed statistically significant differences between the two subtypes, and between the two subtypes combined and the healthy controls. Importantly for the hypothesis, where differences for neuropsychological tests in terms of effect sizes between subtypes were largest, the differences in effect sizes between the two groups combined and controls were smallest (r = -0.64, 95% CI [-0.15, -0.87]).
Original languageEnglish
Pages (from-to)55-63
Number of pages9
JournalResearch in Developmental Disabilities
Publication statusPublished - 1 Aug 2016
Externally publishedYes


  • ADHD
  • Assessment
  • Attention
  • Executive functions
  • Learning and memory

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology


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