This research was supported by grants MH 65137, DA 05147, and AA 09367 from the National Institutes of Health, and by funds from the Hathaway endowment at the University of Minnesota.
P300 amplitude as an indicator of externalizing in adolescent males
Article first published online: 28 FEB 2006
Volume 43, Issue 1, pages 84–92, January 2006
How to Cite
Patrick, C. J., Bernat, E. M., Malone, S. M., Iacono, W. G., Krueger, R. F. and McGue, M. (2006), P300 amplitude as an indicator of externalizing in adolescent males. Psychophysiology, 43: 84–92. doi: 10.1111/j.1469-8986.2006.00376.x
- Issue published online: 28 FEB 2006
- Article first published online: 28 FEB 2006
- (received April 6, 2005; accepted November 21, 2005)
Reduced P300 amplitude is reliably found in individuals with a personal or family history of alcohol problems. However, alcoholism is part of a broader externalizing spectrum that includes other substance use and antisocial disorders. We hypothesized that reduced P300 is an indicator of the common factor that underlies disorders within this spectrum. Community males (N=969) were assessed at age 17 in a visual oddball task. Externalizing was defined as the common factor underlying symptoms of alcohol dependence, drug dependence, nicotine dependence, conduct disorder, and adult antisocial behavior. A robust association was found between reduced P300 amplitude and the externalizing factor, and this relation accounted for links between specific externalizing disorders and P300. Our findings indicate that reduced P300 amplitude is an indicator of the broad neurobiological vulnerability that underlies disorders within the externalizing spectrum.