中文摘要：

采用2（组别暴力组和非暴力组）×3（目标刺激类型：中性面孔、愤怒面孔和高兴面孔）的混合实验设计，探讨了暴力犯罪者对负性情绪刺激的注意偏向特点。行为数据显示，相比非暴力组，暴力组对愤怒面孔的反应要显著快于高兴面孔，初步验证了暴力犯罪者对负性情绪信息的敏感性。采用jackknife对潜伏期数据分析表明，暴力组对愤怒面孔的N2pc潜伏期要显著早于高兴面孔，而非暴力组对愤怒面孔和高兴面孔的N2pc潜伏期差异不显著，说明暴力犯罪者对愤怒面孔的警觉早于高兴面孔，进一步说明暴力犯对负性情绪信息更为敏感。但波幅分析表明暴力犯对愤怒面孔的N2pc波幅并没有大于高兴面孔的N2pc波幅，即暴力犯对负性情绪信息只存在早期的警觉，之后并没有对负性情绪信息投入更多的注意资源。

英文摘要：

The violent crime is a highlighted problem of modern society, and it is always having a devastating impact on individuals andtheir families. Until now, there has been a relative dearth of research on the effects of neurocognitive factors on violent offenders. Aneurocognitive perspective on violent offenders suggests that violent offenders have signi？ cant cognitive impairments that may contributeto their violent lifestyle. Eckhardt el al. （ 1998 ） observed that batterers tended to commit a variety of cognitive errors. While the sourceof these cognitive errors is not known, one hypothesis is that violent offenders have a bias towards over- allocating attentional resourcesto negative affective stimuli. The present study used event - related potentials （ERP） to investigate whether violent offenders are morevigilant to negative emotion. The N2pc ERP component was measured as an index of the allocation of spatial attention. This study teststhe hypotheses that violent offenders have a neurocognitive bias favoring negative affect （angry face） stimuli. We recruited 26 male inmates from a local prison, 13 violent offenders, 13 nonviolent offenders. Besides, there were no signifi-cance difference between violent and nonviolent offenders on the state anxiety and Aggression Questionnaire （p 〉0 . 05 ）. Three malesubjects were excluded from data analysis because of excessive artifacts during EEG recording. Facial stimuli, which were made by theFaeegen Modeller program, were used to convey negative information. The faces were comprised by four individuals （2 females） eachposing neutral, happy, and angry expressions. The external features of each of the faces were removed and the internal features werepresented in a black rectangular frame. The experiment was comprised of five blocks. For each block, 128 trials were delivered. The faces were presented for 500 ms, fol-lowed by a random fixation between 500 - 1000 ms. The subjects were told to search the target face （angry or happy face） and responseas