刑事施設内暴力のリスク要因の探索的研究

抄録

This study evaluated the characteristics of inmates who assault in penal institutions. Three categories were formulated for 867 male inmates as follows: those who had assaulted staff, had assaulted inmates, and had not assaulted anyone. Logistic regression analysis was performed based on the results of one-way ANOVA and independence test. AUC based on the results of logistic regression analysis of assault against staff with “type of crime,” “a history (or the lack thereof) of disciplinary offenses,” and “the presence or absence of mental disorder(s)” as independent variables was .84. Risk factors for assault against staff were committed felonies, past assault of staff, and mental disorder(s). AUC based on the results of logistic regression analysis on assault against inmates with “age,” “number of sentences,” “length of sentences,” and “a history (or the lack thereof) of disciplinary offenses” as independent variables was .76. Risk factors for assault against inmates were younger, frequent imprisonment, longer sentences, and past assault of staff and inmates. In conclusion, risk management focusing on different risk factors and interventions such as emotional control, learning problem-solving skill other than violence, and psychiatric treatment are important in preventing assault against staff and inmates.