title: Electrophysiological evidence for early perceptual facilitation and efficient categorization of self-related stimuli during an Implicit Association Test measuring neuroticism.
abstract: The Implicit Association Test (IAT) is a widely used latency-based categorization task that indirectly measures the strength of automatic associations between target and attribute concepts. So far, little is known about the perceptual and cognitive processes underlying personality IATs. Thus, the present study examined event-related potential indices during the execution of an IAT measuring neuroticism (N  =  70). The IAT effect was strongly modulated by the P1 component indicating early facilitation of relevant visual input and by a P3b-like late positive component reflecting the efficacy of stimulus categorization. Both components covaried, and larger amplitudes led to faster responses. The results suggest a relationship between early perceptual and semantic processes operating at a more automatic, implicit level and later decision-related categorization of self-relevant stimuli contributing to the IAT effect.
authors.affiliation: Department of Psychology, Technische Universitaet Dresden, Dresden, Germany.
authors.forename: Monika
authors.initials: M
authors.lastname: Fleischhauer
authors.forename: Alexander
authors.initials: A
authors.lastname: Strobel
authors.forename: Kersten
authors.initials: K
authors.lastname: Diers
authors.forename: Sören
authors.initials: S
authors.lastname: Enge
mesh_terms: D000328:Adult; D001008:Anxiety Disorders / Q000523:psychology*; D001244:Association; D004532:Ego; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D000075384:Neuroticism; D010465:Perception / Q000502:physiology*; D055815:Young Adult
keywords: Event-related potentials; Implicit Association Test; Neuroticism; P1; P3b/late positive component