Megumi Hazumi, Aoi Kawamura, Takuya Yoshiike, Kentaro Matsui, Shingo Kitamura, Ayumi Tsuru, Kentaro Nagao, Naoko Ayabe, Tomohiro Utsumi, Muneto Izuhara, Mio Shinozaki, Eriya Takahashi, Michio Fukumizu, Momo Fushimi, Satomi Okabe, Taisuke Eto, Daisuke Nishi, Kenichi Kuriyama
BACKGROUND: The average sleep duration of Japanese people is shorter than that of people from other countries, and bedtime procrastination is suspected to be one of the factors contributing to this issue. This study aimed to develop and validate the Japanese version of the Bedtime Procrastination Scale (BPS-J). METHODS: The BPS-J was developed through procedures including the translation and back-translation of the scale, cognitive interviews with 100 participants who reported having experiences of being diagnosed with insufficient sleep syndrome (ISS) or receiving treatment for ISS using open-ended online questionnaires, and expert checking...
February 1, 2024: BMC Psychology