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The purpose of present study is to investigate that college students' drinking behavior, circadian
rhythm, and adjustment for college life such as depression, stress in campus life, and grade-point average. This investigation, furthermore, focus on the differences in their depression, stress in campus life, and grade-point average by circadian rhythm and drinking behavior. The participants were 258 college students (72 males and 186 females) whose ages ranged from 17 to 38 (M=22.69, SD=3.37). The questionnaires and psychological tests used in this research included the following: Alcohol Use Disorder Identification Test, Circadian Rhythm Questionnaire, Sleep Deprivation Scale, Stress Coping Questionnaire for College Students, and Zung's Self-Rating Depression. Main statistical design was a 2 (drinking) × 2 (circadian rhythm) 2-way MANCOVA. Results revealed that male students drank more alcoholic beverages than female students, while females felt more sleep deprivation than males. There is a significant relationship between doing internet game at night and circadian rhythm for males only.
And there is a significant relationship between drinking and circadian rhythm. Students who got high scores in circadian rhythm questionnaire experienced sleep deprivation more than students who got low scores in circadian rhythm questionnaire. Students who got high scores in circadian rhythm had more stress in college life and depressed more than students who got low scores in circadian rhythm. There were 2-way interactions in stress of college life and depression by drinking and circadian rhythm.
Simple main effect analysis showed that there were main effects in stress of college life and depression only for students who drink alcohol beverages a lot.