暴力犯对社会暴力信息的认知加工研究

Cognitive Judgement of Social Violent Information in Violent Criminals

目的探讨暴力犯对社会暴力信息的认知加工方式。方法选取32名青少年暴力犯,采用EyelinkⅡ型眼动仪记录实验组对社会暴力信息的眼动数据。结果青少年暴力犯在暴力图片兴趣区第一个点开始时间显著快于中性图片(t=3.06,P<0.05),对暴力图片在兴趣区第一个点注视时间显著长于中性图片(t=6.37,P<0.001),暴力犯对暴力图片和中性图片在兴趣区注视点总数,兴趣区注视点比率和兴趣区最大瞳孔直径均有显著差异(P<0.05);进一步因素分析发现,暴力犯对中性信息的注意偏向成分可分为2个因子,而对暴力信息的注意偏向成分可分为4个因子。结论暴力犯对中性信息和社会暴力信息注意偏向有很大的差别,暴力犯对社会暴力信息有其独特的认知加工模式。

Objective To explore the cognitive judgment of social violent information in violent criminals. Methods A total of 32 violent criminals were selected ,and their eye movements on violent pictures were also recorded and analyzed using Eyelink II eye tracking instrument. Results The first fixation time in violent pictures was significantly shorter than neutral pictures（t=3.06,P 0.05）, while the first fixation duration in violent picture was significantly longer than neutral pictures （t =6.37, P〈0. 001 ） There were significantly different on fixation count of interest area,fixation ratio of interest area and pupil size max of interest area between violent pictures and neutral pictures（P〈0.05）. According to factor analysis,the eye indexes of neutral pictures could be divided into two factors, as violent pictures had four, yet the indexes each factor included were different. Conclusion Violent crimi- nals has unique charaeteristic on attention bias and cognitive processing mode.