We found that individuals in our sample who exceeded the cut-off for psychopathy on the PCL-R produced robust NoGo N2s and inhibitory P3s. Although offenders made more errors of commission on NoGo trails, these did not correlate with level of psychopathy within the offender group suggesting that such errors were not specific to psychopathy. Response times were longer for offenders than controls, but again, RTs did not relate to psychopathy. Although the offender group produced smaller inhibitory P3 amplitudes at frontal sites, this effect was not associated with condition and did not correlate with psychopathy within the group.