title: The relationship of behavioral inhibition to executive functions in young adults.
abstract: Barkley's hybrid model of executive functions (EFs) predicts that individuals with deficient inhibitory control should show impairment of EFs. Thirty-eight nonreferred young adults were administered tests of EFs and four laboratory measures of inhibitory control: Stop Signal (SS), Go No-Go, Competing Motor Program (CMP), and Stroop Color-Word tests. Behavioral ratings of impulsivity were collected using the Barratt Impulsivity Scale-11 (BIS-11). CMP and SS accounted for a significant proportion of variance in measures of EFs beyond that accounted for by IQ. Additionally, increased impulsivity, as measured by the BIS-11, was associated with poorer performance on some tests of EFs. These findings provide partial support for Barkley's theory in that effective executive functioning is associated with sufficient inhibitory control.
authors.affiliation: Neuropsychology Subprogram of the Ph.D. Program in Psychology, Graduate School and University Center, City University of New York, NY 11367, USA.
authors.forename: Angeles M
authors.initials: AM
authors.lastname: Cheung
authors.forename: Effie M
authors.initials: EM
authors.lastname: Mitsis
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Halperin
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D007360:Intelligence / Q000502:physiology; D008297:Male; D008960:Models, Psychological; D009483:Neuropsychological Tests / Q000706:statistics & numerical data; D011340:Problem Solving / Q000502:physiology*; D011594:Psychometrics / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology; D011930:Reaction Time / Q000502:physiology