title: ADHD subtypes and neuropsychological performance in an adult sample.
abstract: 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]).
authors.affiliation: School of Applied Psychology and Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.
authors.forename: Roberta
authors.initials: R
authors.lastname: Dobson-Patterson
authors.affiliation: School of Applied Psychology and Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.
authors.forename: John G
authors.initials: JG
authors.lastname: O'Gorman
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Raymond C K
authors.initials: RC
authors.lastname: Chan
authors.affiliation: School of Applied Psychology and Menzies Health Institute Queensland, Griffith University, Brisbane, Australia. Electronic address: d.shum@griffith.edu.au.
authors.forename: David H K
authors.initials: DH
authors.lastname: Shum
mesh_terms: D000328:Adult; D001288:Attention; D001289:Attention Deficit Disorder with Hyperactivity / Q000145:classification / Q000503:physiopathology / Q000523:psychology*; D016022:Case-Control Studies; D056344:Executive Function; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory; D008875:Middle Aged; D015999:Multivariate Analysis; D009483:Neuropsychological Tests; D011597:Psychomotor Performance; D014145:Trail Making Test
keywords: ADHD; Assessment; Attention; Executive functions; Learning and memory