ABSTRACT
This study investigated the mediating effect of depression on the relationship between sleep quality and internet addiction in Taiwanese junior college students. We recruited 590 (53 males, 537 females) students, aged from 15 to 22 years from a day school of a junior college in northern Taiwan. We used a cross-sectional study design. The Chen Internet Addiction Scale, Chinese Version of the Pittsburgh Sleep Quality Index, and Adolescent Depression Scale were used as measurement instruments. Using the IBM SPSS Statistics 26 software package, descriptive statistics, reliability analysis, correlation analysis, and inferential statistics were used to evaluate the participants' demographics and relationships between the study variables. The mediation model was tested using the Z test. The prevalence of internet addiction in junior college students was 21.2 %. The indirect effects were determined using Sobel's test and bootstrapping confirming that depression completely mediated the relationship between sleep quality and internet addiction. The findings would help to build holistic and comprehensive prevention and intervention programs that should be developed to reduce the addictive behaviors of adolescents.
