A Follow-up Study of Mentally Disordered Offenders Repeating Crime : An Aspect of Repeat Offenses and Their Factors

这项研究调查了1980年被捕后11年内再次被捕的人。他们的第一批946个案件没有被起诉，因为精神病诊断为精神障碍，决定不负责任或减少责任。分析了再犯的情况和因素。在日本警察厅，946名对象中有144件有犯罪记录。在重复犯罪中，有杀人罪等重罪记录。前科、工作生活条件不稳定、家庭关系薄弱等变量是影响其再犯的重要因素。与精神障碍组相比，控制组重复各种犯罪的频率高出三倍，但他们犯下重罪的频率相似。5个变量对重复犯罪率有显著影响；有前科；近十年有重罪记录；犯罪后3个月内住院治疗；他们的受害者不是亲属；罪犯没有永久居民。作者发现了两名犯了更多罪行的惯犯。两者之间有一些相似之处；精神分裂症患者甚至在精神分裂症发病前就有过几次犯罪记录；在醉酒状态下多次犯罪的酗酒者；犯罪后住进精神病院，但很快就出院了；出院后独自一人，没有房子住，没有家人支持他们的日常生活。选取111例登记为杀人案的精神分裂症病例，将其分为两类；“单型”和“重复型”。如果将预测概率的边界设置为0.50，则该逻辑模型的预测正确率为82.7%。

This study examines subjects who rearrested during eleven years after being arrested in 1980. Their first 946 cases were not prosecuted due to a psychiatric diagnosis of mental disorder decided irresponsibility or diminished responsibility. Analysis were made about situations and factors of the repeat offenses.144 cases of 946 subjects were on criminal records in the National Police Agency in Japan. In the repeated offenses, there are some felony records including homicide.Some variables, previous guilty conviction, unstable working and living conditions, weak family relationships are important factors of their recidivism. Compared to the mentally disordered group, the control homicide group repeated various crimes three times more frequently, but they committed the felonious offenses at a similar frequency.Five variables significantly effected the rate of repeat offenses ; previous guilty conviction ; felony record in the past 10 years ; hospitalization after the previous crime within 3 months ; their victims are not relatives ; and offenders had no permanent resident.The authors found out two recidivists who committed more offenses. there were some similarities between the two ; schizophrenics who had several criminal records even before onset of schizophrenia ; alcoholic abusers with repeated offenses while under intoxication ; admitted to mental hospitals after their offenses but released relatively soon ; and alone after discharge and no house to live in, with no family to support their daily lives.111 schizophrenia cases registered as homicides were selected, and they were divided into two categories ; "mono type" and "repeat type". If the borderline of predictive probability is set at 0.50, this logistic model predicted correctly 82.7% as a whole.