The Relationship Between Bedtime Procrastination and Daytime Sleepiness in College Students: A Moderated Mediation Model

doi:10.12139/j.1672-0628.2022.06.012

Abstract

Abstract:

The present study constructed a moderated mediation model to explore the relationship between bedtime procrastination and daytime sleepiness in college students, and further to examine the mediating effect of insomnia and the moderating effect of chronotype by using the Bedtime Procrastination Scale, Insomnia Severity Index Scale, Epworth Sleepiness Scale and Morningness-Eveningness Questionnaire. A total of 4252 college students were recruited to participate in this study. The results showed that: 1) bedtime procrastination had a significant positive prediction on daytime sleepiness; 2) insomnia played a partial mediating role in the relationship between bedtime procrastination and daytime sleepiness; 3) the association between bedtime procrastination and insomnia was moderated by chronotype. Compared to the students with morningness, the prediction effect of bedtime procrastination on insomnia was much stronger in individuals with eveningness.

Key words: bedtime procrastination, daytime sleepiness, insomnia, chronotype, college students

摘要：

本研究探讨了大学生睡眠拖延与日间嗜睡的关系，以及失眠在其中的中介作用和睡眠时型在其中的调节作用。采用睡眠拖延量表、失眠严重程度指数量表、Epworth嗜睡量表和睡眠时型量表对4252名大学生进行调查。结果表明：（1）睡眠拖延对日间嗜睡有显著的正向预测作用；（2）失眠在大学生睡眠拖延与日间嗜睡的关系中起部分中介作用；（3）睡眠拖延经由失眠影响日间嗜睡的中介作用受到睡眠时型的调节，相对于清晨型，睡眠拖延对夜晚型大学生失眠的预测作用更强。

关键词: 睡眠拖延, 日间嗜睡, 失眠, 睡眠时型, 大学生

CLC Number:

B844

Yingying ZHU, Jiahao HUANG, Zhuoyi TANG, Jiaying LIU, Xin LI. The Relationship Between Bedtime Procrastination and Daytime Sleepiness in College Students: A Moderated Mediation Model[J]. Studies of Psychology and Behavior, 2022, 20(6): 797-804.

朱莹莹, 黄佳豪, 唐卓仪, 刘佳莹, 李欣. 大学生睡眠拖延与日间嗜睡的关系：一个有调节的中介模型[J]. 心理与行为研究, 2022, 20(6): 797-804.

Figures/Tables 4

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变量	M±SD	1	2	3	4	5
1.性别^a
2.年龄	19.76±1.39
3.睡眠拖延	2.95±0.66	0.08***	−0.002
4.日间嗜睡	9.50±4.73	0.15***	−0.04*	0.27***
5.失眠	7.72±5.06	0.05**	0.03*	0.43***	0.42***
6.睡眠时型	53.68±7.71	−0.11***	0.04*	−0.48***	−0.26***	−0.29***

变量	M±SD	1	2	3	4	5
1.性别^a
2.年龄	19.76±1.39
3.睡眠拖延	2.95±0.66	0.08***	−0.002
4.日间嗜睡	9.50±4.73	0.15***	−0.04*	0.27***
5.失眠	7.72±5.06	0.05**	0.03*	0.43***	0.42***
6.睡眠时型	53.68±7.71	−0.11***	0.04*	−0.48***	−0.26***	−0.29***

观测变量	清晨型	夜晚型	中间型	F	η²
睡眠拖延	2.59±0.61	3.65±0.62	3.02±0.60	402.25***	0.15
日间嗜睡	7.91±4.91	11.57±4.70	9.92±4.48	96.05***	0.04
失眠	5.90±4.82	10.62±5.83	8.14±4.83	135.04***	0.06

观测变量	清晨型	夜晚型	中间型	F	η²
睡眠拖延	2.59±0.61	3.65±0.62	3.02±0.60	402.25***	0.15
日间嗜睡	7.91±4.91	11.57±4.70	9.92±4.48	96.05***	0.04
失眠	5.90±4.82	10.62±5.83	8.14±4.83	135.04***	0.06

中介变量	效应	效应值	Boot标准误	95%CI
	总效应	0.25	0.01	[0.23, 0.28]
失眠	直接效应	0.09	0.02	[0.06, 0.12]
	间接效应	0.16	0.01	[0.14, 0.18]