The aim of the current analyses was to examine the possibilities of sustainable contributions in Japanese criminal psychologists after detached from their practices. This study analyzed bibliometric data of Japanese criminal psychologists who had worked at practical fields as scientist-practitioners. Final data were identified under the three conditions: the researchers have (1) attributed to the Japanese Association of Criminal Psychology, (2) published scientific papers in Japanese Journal of Criminal Psychology, and (3) changed their job to academicians. The number of their published papers was the target variable. Wilcoxon signed-rank tests showed that the Japanese criminal psychologists increased the number of the published papers after detached from their practical fields. Multidimensional scaling for the journals in which the papers accepted and text-mining methods for the title of the papers revealed that research theme after job change diverged from the original one as induced in their practical fields. In conclusion, findings suggest that Japanese criminal psychologists can continue their researches after detached from their practices although their research theme could not be sustainable.
