The Mediating Effect Of College Students' Bedtime Procrastination On The Relationship Between Time Management Disposition And Sleep Quality

Time management disposition as a personality characteristic with multi-dimensional and multi-level psychological structure,which is an individual's cognitive characteristics of attitude,planning and utilization of time,and also the individual's values and behavioral tendencies towards time.So how does time management disposition affect individual's sleep quality? Based on the related research that personality characteristics affect sleep quality and Temporal Motivation Theory,this study constructs a moderated mediation model of time management disposition and sleep quality,introduces bedtime procrastination and sleep rhythm,and discusses the internal influence mechanism of time management disposition on sleep quality.A total of 757 college students were investigated by using the Adolescence Time Management Disposition Scale,the Bedtime procrastination scale,the Pittsburgh Sleep Quality Index and the Morningness-Eveningness Questionnaire.Statistical analysis and model tests were performed using SPSS 22.0 and Liserl8.70,and the following results are obtained:(1)The time management disposition of college students are good,and there is no significant difference in gender,major and grade.(2)There is a certain amount of bedtime procrastination in the overall situation of college students,but the degree of procrastination is not very serious.There is no significant difference in gender and major,but there is significant difference in grade.The bedtime procrastination of juniors and seniors are significantly higher than that of freshmen.(3)The sleep rhythm of college students is generally biased towards the eveningness,and the morningness sleepers have the best sleep quality,and the eveningness sleepers have the worst sleep quality.(4)The overall sleep quality of college students are poor,and there are serious problems.In terms of gender differences,the subjective sleep quality of women are better than that of men;in the aspect of major differences,the sleep disorder of liberal arts students are more serious than those of science and engineering students,and the art students take more hypnotic drugs than those of liberal arts,science,engineering,and medical students;in terms of grade differences,the subjective sleep quality of the fifth grade students are better than that of the freshmen to seniors.The sleep time of the juniors and seniors are longer than that of the freshmen and sophomores.The daytime dysfunction of the juniors and seniors are more serious than that of the freshmen and sophomores.(5)The time management disposition negatively predicts sleep quality(? =-.176,t =-4.886,p < 0.001),bedtime procrastination predicts sleep quality positively(? =.376,t=10.677,p < 0.001)and plays a full mediating role in the influence of time management disposition on sleep quality.The sleep rhythm plays a moderating role between bedtime procrastination and sleep quality(? =.090,t = 2.718,p < 0.01).Compared with eveningness college students,morningness college students' bedtime procrastination have a greater impact on sleep quality.