Detecting Memory of Collaborative Crime by Concealed Information Test based on N200 and P300

• 作 者: Yang Lu J.Peter Rosenfeld Xiaohong Deng Anne Ward Erhu Zhang Huihui Zheng Gejun Yan Dan Ouyang Saba Z.Hayat
• 机 构: Department of psychology, Faculty of Education, Hubei University, Wuhan, Hubei Province, China, 4300
• 出 处: 湖北省暨武汉心理学会
• 发表日期: 2016年11期
• 关键词: Collaborative crime Concealed Information Test Complex Trial Protocol N200 P300

　　The present study investigated the effect of collaborative act of crime to explore whether P300-based Concealed Information Test (CIT) can identify gang criminal suspects.Participants were divided into two groups and either performed a mock crime alone (individual group) or performed that with another participant (collaborative group) before Complex Trial Protocol (CTP) test.The comparative results of individual act verses collaboration revealed that the crime-related item (Probe) elicited a significantly smaller P300 and an undifferentiated N200 in collaborative group.Using P300 index,CTP detected 12/16 participants in individual group and just 4/16 participant in collaborative group.However,using combination index of N200 + P300 detected 14/16 in individual group and 11/16 in collaborative group.These findings suggested that collaborative act of crime impacts the efficiency of P300-based CIT and N200 may be a complementary measure to identify gang criminal suspect.