トピックモデルによる本邦犯罪心理学研究の推移—過去60年に及ぶ大会発表抄録の時系列分析—

抄録

The aim of this study was to examine a trend of Japanese criminal psychology research themes. The archive of all research titles of proceedings in the Japanese Journal of Criminal Psychology special number (annual conference) from 1963 to 2022 were used in the current investigation. The 4,271 research titles over the past 60 years were analyzed using Latent Dirichlet Allocation (LDA). Topic model with LDA detected that there were 22 themes for Japanese criminal psychology and hierarchical cluster analysis classified both three clusters and seven topics. Time-series analysis revealed that each themes had own transition. Decreasing trend were involved in such themes as intelligence tests, correctional treatment, and cluster I, while increasing pattern were shown in such topics as sexual offence, risk assessment, effectiveness verification, offender profiling and cluster II. Juvenile classification home and cluster III were the invariant themes. Criminal psychological studies in Japan were discussed and the author suggests the future direction for Japanese criminal psychology research.