Reproducibility issues in the field of psychology have taken on a new dimension with advancements in Science & Technology. In the process, important topics that had previously been discovered but not shared in the field of psychological science, i.e., p-hacking, are now becoming recognized. Moreover, hopeful methods to deal with the situation, i.e., meta-analysis and research pre-registration, are becoming introduced into the research practice. In this paper, reproducibility issues in the field of psychological science in Japan are discussed from the perspective of research integrity. Reproducibility itself is not always important in psychological sciences, but the emergence of such issues provides a good opportunity for the scientific community to deal with this problem with research integrity.
