Takaki Fukumori, Kengo Fujishima, Kazunori Iwasa, Yumiko Takao, Yukino Kobayashi, & Hiroyuki Nishie (2023). Validation of the Japanese version of the 8-item Chronic Pain Acceptance Questionnaire (CPAQ-8). The Journal of Medical Investigation, 70, 88-93. The Japanese version of the CPAQ-8 is in Table 1.
Kengo Fujishima, Takaki Fukumori, Stevetoshihisa Fukuda (2017) Development of the Japanese version of Chronic Pain Acceptance Questionnaire-8 (CPAQ-8J): In a sample of university students with chronic pain. The Proceedings of the Annual Convention of the Japanese Psychological Association, 2017, Volume 81, The 81st Annual Convention of the Japanese Psychological Association, Session ID 1B-033, Pages 1B-033. https://doi.org/10.4992/pacjpa.81.0_1B-033