Validation of the Korean Bedtime Procrastination Scale in Young Adults

Abstract

Bedtime procrastination is defined as going to bed later than intended, without having external reasons for doing so. Despite various studies investigating the new concept of bedtime procrastination, there have been no studies that have validated the Bedtime Procrastination Scale (BPS). Thus, this study aims to validate the BPS in Korean. Methods: Two hundred twenty seven participants (mean age 22±2.39 years, 81.1% female) participated in the study. All participants completed the BPS,

Development and Validation of the Japanese Version of the Bedtime Procrastination Scale (BPS-J)

“…The t indices seemed to be lower than those of the other language versions, even in the two-factor model, in which the factor loading of items was eliminated. The factor loadings of Item 2 in the Korean version also seemed to be lower than those of the other items (20), similar to the trend noted for the BPS-J. Considering the fact that sleep duration among Japanese and Korean participants seemed to be shorter than those from other countries in the world(50), the trend implied by the poor tting pro le of Item 2 could be in uenced by a mutually shared value of under-evaluation regarding getting su cient sleep among societies with extremely short sleep duration 40 .…”

“…The fact that the two-factor model after removing Item 2 tted better than the one-factor model may not be peculiar to the BPS-J. The eigenvalues of the two components also reached 1 in the Polish and Korean versions, (17,20) and the t indices of the two-factor model were also better than the one-factor model for the Korean version 20 as well as the BPS-J.…”

“…The BPS measures the tendency of bedtime procrastination, which has been con rmed to have su cient validity and reliability in the original and other language versions (15,17,20,22). This tool consists of nine items, and each item is evaluated on a 5-point scale: 1 (almost never) to 5 (almost always).…”

“…To our knowledge, it is the rst scale developed to assess bedtime procrastination. The BPS is a major measurement tool translated and validated in several languages, such as Dutch, Spanish, English, and Korean(15,19,20,22). However, a Japanese version of the BPS has not yet been developed.…”

“…To our knowledge, it is the rst scale developed to assess bedtime procrastination. The BPS is a major measurement tool translated and validated in several languages, such as Dutch, Spanish, English, and Korean(15,19,20,22). However, a Japanese version of the BPS has not yet been developed.The coronavirus disease 2019 (COVID-19) pandemic has particularly brought out the burdens of sleep loss and delayed sleep-wake phase on sleep health worldwide(26-29).…”