Two Types Of Youth Violence Committed Inhibition Of The Control Function Of The Difference Erp Evidence

Inhibitory control dysfunction is considered a universal character in adolescent violent offenders.The author proposed that reactive and instrumental types of violent offenders would differ in inhibition control.In study 25 boys,which contained 13 reactive offenders and 12 instrumental offenders,were selected from 322 boys using "Procedures for the Classification of Aggressive/Violent Acts" developed by Matthew S. Stanford.To compare the inhibition mechanism of sub-categories of violenct criminals,behavioral data and ERPs(event-related potentials) were recorded during a visual Go/Nogo task.Accorded with the hypothesis, the reactive offenders made more commission errors than instrumental criminals,suggesting stronger pre-potent responses or a failure of inhibitory control in reactive ones.The N2 amplitude(absolute value of Nogo minus Go) was significantly lower in reactive prisoners than in instrumental ones,which is evidence of dysfunction in conflict monitoring of reactive violenct offenders.And that,there was a reverse correlation between N2 amplitude and the level of impulsive aggression,which is a dimension of IPAS corresponding to reactive violence,eliminated the impact of premeditated aggression corresponding to instrumental violence, which supported the foregoing explaination.Reactive criminals appeared frontal and frontocententral P3-Nogo effect,but that effect disappeared in instrumental prisoners.This implied that instrumental violent offenders were impaired on response inhibition,which reflects the terminal Inhibitory control.