The impact of cognitive control, incentives, and working memory load on the P3 responses of externalizing prisoners.
The P3 amplitude reduction is one of the most common correlates of externalizing. However, few studies have used experimental manipulations designed to challenge different cognitive functions in order to clarify the processes that impact this reduction. To examine factors moderating P3 amplitude in trait externalizing, we administered an n-back task that manipulated cognitive control demands, working memory load, and incentives to a sample of male offenders. Offenders with high trait externalizing scores did not display a global reduction in P3 amplitude. Rather, the negative association between trait externalizing and P3 amplitude was specific to trials involving inhibition of a dominant response during infrequent stimuli, in the context of low working memory load, and incentives for performance. In addition, we discuss the potential implications of these findings for externalizing-related psychopathologies. The results complement and expand previous work on the process-level dysfunction contributing to externalizing-related deficits in P3.
['Baskin-Sommers|Arielle R|AR|', 'Krusemark|Elizabeth A|EA|', 'Curtin|John J|JJ|', 'Lee|Christopher|C|', 'Vujnovich|Aleice|A|', 'Newman|Joseph P|JP|']
D000293:Adolescent D000328:Adult D003071:Cognition D004569:Electroencephalography D018913:Event-Related Potentials, P300 D006801:Humans D007389:Internal-External Control D008297:Male D008570:Memory, Short-Term D008875:Middle Aged D009042:Motivation D009483:Neuropsychological Tests D010551:Personality D011329:Prisoners D019966:Substance-Related Disorders D011795:Surveys and Questionnaires D055815:Young Adult
Cognitive control Working memory P3 Externalizing Punishment Reward