The Study of Crime Pattern and Psychological Characteristics of Mass Murder

• Main Authors: Shih-chiang Lo, 羅時強
• Other Authors: Rueih-Chin Lin
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/29081937026923311481

博士 === 國立中正大學 === 犯罪防治所 === 95 === The literatures about the study of mass murder were absence in Taiwan. For this purpose, three pioneer studies on this subject had been conduct in thesis. In order to explore the crime characteristics of the mass murder, the Retrospective Research was used in study 1. 106 court verdicts related to this theme were collected from the Judicial Yuan. The Qualitative Research technique was applied in Study 2. 8 convicts of mass murder were interviewed about the crime pattern and motive. In study 3, the self-reported questionnaires were used to survey the psychological characteristics of cognitive distortion, impulsivity and aggression. The major limitation of this study was due to hard to find the convicts who killed 3 victims in Taiwan, the definition of the mass murder in this thesis was modulate the number of victim for two person (one died and one hurt). The research results were listed as follows： 1. About fifty percent of mass murderers were malice aforethought, thirty percent were under the influence of alcohol and sixty percent were acquainted with the victims each other. The rate of the previous conviction records in general murderers was higher than the mass murderers obviously. Compare with the general murders, high proportion of the malice aforethought cases and low percentage of alcohol influence were found in mass murderers. 2. From the research of qualitative research with 8 convicts of mass murder revealed that the crime pattern of the mass murder and the key point of the offence behavior in mass murderers was the trigger factor. 3.By the way of self-reported questionnaires study with 65 mass murderers, 201 general murderers and 98 general population, the results show that no difference in the cognitive distortions, impulsivity and aggression between the mass murderers and general murderers. The correlate of the cognitive distortions, impulsivity and aggression was found in the mass murderers. Without thinking was the most important factor for prediction the aggressive behavior. The causal relation was disclosed between the cognitive distortions, impulsivity and aggression by the way of the path analysis. To distinguish from the mass murderers and general person, the cognitive distortions and aggressive factor was used and 63.2％ accurate rate was found in discriminant analysis. From the study, some suggestions relate to the control of mass murder, prevention strategy and further research was brought up in this thesis, including improving the interpersonal communication, alcoholism prevention, violence behavior correction, screening of cognitive distortion in young group and the control of psychosis patient.