Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J)
Abstract 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 Procrastin...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2024-02-01
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| Series: | BMC Psychology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40359-024-01557-4 |
| _version_ | 1797272743726546944 |
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| author | 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 |
| author_facet | 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 |
| author_sort | Megumi Hazumi |
| collection | DOAJ |
| description | Abstract 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. To investigate the scale’s validity and reliability, an online survey was conducted with daytime workers aged 20 − 65 years without a history of sleep disorders other than ISS. Half the participants were retested using the same survey after 14 days. Participants’ responses to the Brief Self-Control Scale (BSCS), General Procrastination Scale (GPS), and Munich ChronoType Questionnaire (MCTQ), and data on sleep-related variables such as sleep duration on workdays and the days per week of fatigue or sleep loss, sex, and age, were collected. Results We analyzed data from 574 participants to assess scale validity. We then analyzed data from 280 participants to determine test–retest reliability. Confirmatory factor analyses revealed that the two-factor model without Item 2 was most suitable for the BPS-J, unlike other language versions. Regardless of the full-item model or the model with Item 2 eliminated, sufficient reliability and significant correlations with the BSCS, GPS, MCTQ, and sleep-related variables such as sleep duration per night on work days, days per week of feeling fatigued, and days per week of sleep loss were observed. Logistic and linear regressions showed that the relationships between the BPS-J, sleep-related variables, and MCTQ were maintained after adjusting for sex and age. Conclusion The BPS-J had sufficient validity and reliability. Further, eliminating Item 2 from the original version of the BPS strengthened the ability to survey Japanese daytime workers. |
| first_indexed | 2024-03-07T14:33:44Z |
| format | Article |
| id | doaj.art-2f2d0e0d07ca45f4a7a90898a0037ae0 |
| institution | Directory Open Access Journal |
| issn | 2050-7283 |
| language | English |
| last_indexed | 2024-03-07T14:33:44Z |
| publishDate | 2024-02-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Psychology |
| spelling | doaj.art-2f2d0e0d07ca45f4a7a90898a0037ae02024-03-05T20:45:37ZengBMCBMC Psychology2050-72832024-02-0112111410.1186/s40359-024-01557-4Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J)Megumi Hazumi0Aoi Kawamura1Takuya Yoshiike2Kentaro Matsui3Shingo Kitamura4Ayumi Tsuru5Kentaro Nagao6Naoko Ayabe7Tomohiro Utsumi8Muneto Izuhara9Mio Shinozaki10Eriya Takahashi11Michio Fukumizu12Momo Fushimi13Satomi Okabe14Taisuke Eto15Daisuke Nishi16Kenichi Kuriyama17Department of Public Mental Health Research, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Public Mental Health Research, National Institute of Mental Health, National Center of Neurology and PsychiatryDepartment of Sleep-Wake Disorders, National Institute of Mental Health, National Center of Neurology and PsychiatryAbstract 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. To investigate the scale’s validity and reliability, an online survey was conducted with daytime workers aged 20 − 65 years without a history of sleep disorders other than ISS. Half the participants were retested using the same survey after 14 days. Participants’ responses to the Brief Self-Control Scale (BSCS), General Procrastination Scale (GPS), and Munich ChronoType Questionnaire (MCTQ), and data on sleep-related variables such as sleep duration on workdays and the days per week of fatigue or sleep loss, sex, and age, were collected. Results We analyzed data from 574 participants to assess scale validity. We then analyzed data from 280 participants to determine test–retest reliability. Confirmatory factor analyses revealed that the two-factor model without Item 2 was most suitable for the BPS-J, unlike other language versions. Regardless of the full-item model or the model with Item 2 eliminated, sufficient reliability and significant correlations with the BSCS, GPS, MCTQ, and sleep-related variables such as sleep duration per night on work days, days per week of feeling fatigued, and days per week of sleep loss were observed. Logistic and linear regressions showed that the relationships between the BPS-J, sleep-related variables, and MCTQ were maintained after adjusting for sex and age. Conclusion The BPS-J had sufficient validity and reliability. Further, eliminating Item 2 from the original version of the BPS strengthened the ability to survey Japanese daytime workers.https://doi.org/10.1186/s40359-024-01557-4Bedtime procrastinationSleep lossChronotypeQuestionnaireValidationSelf-control |
| spellingShingle | 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 Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J) BMC Psychology Bedtime procrastination Sleep loss Chronotype Questionnaire Validation Self-control |
| title | Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J) |
| title_full | Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J) |
| title_fullStr | Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J) |
| title_full_unstemmed | Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J) |
| title_short | Development and validation of the Japanese version of the Bedtime Procrastination Scale (BPS-J) |
| title_sort | development and validation of the japanese version of the bedtime procrastination scale bps j |
| topic | Bedtime procrastination Sleep loss Chronotype Questionnaire Validation Self-control |
| url | https://doi.org/10.1186/s40359-024-01557-4 |
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