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The Effect of Circadian Types and Depressive Mood on Internet Addiction in Korean College Students  

Oh, Kyu Soo (Department of Psychiatry, St. Andrew's Hospital)
Lee, Hye-Kyung (Department of Nursing, College of Nursing and Health, Kongju National University)
Lee, Kounseok (Department of Psychiatry, St. Andrew's Hospital)
Publication Information
Korean Journal of Biological Psychiatry / v.23, no.4, 2016 , pp. 173-178 More about this Journal
Abstract
Objectives The purpose of this study was to investigate the relationships among circadian types, depressive mood and internet addiction and to identify the mediating effect of depressive mood between circadian types and internet addiction in Korean College Students. Methods A total of 2632 participants completed questionnaires, which included the Korean translation of the Composite Scale of Morningness (CSM), the Patient Health Questionnaire (PHQ-9), and the Korean version of the Internet Addiction Test (KIAT). Statistical analyses were done using correlation analysis, analysis of covariance and multiple linear regression. Results The CSM score was negatively associated with the PHQ-9 score (r = -0.226, p < 0.001) and the KIAT score (r = -0.218, p < 0.001). The eveningness group showed higher scores in depressive mood and internet addiction than the morningness group (p < 0.001). Depressive mood showed a partial mediating effect between circadian types and internet addiction (${\beta}=0.255$, p < 0.001). Conclusions Internet addiction was associated with circadian types and depressive mood. These results suggest that depression and circadian rhythm management would contribute to the prevention of internet addiction.
Keywords
Circadian typology; Depressive mood; Internet addiction;
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