Özet:

The aim of the study is to examine the effect of school belonging, loneliness and smartphone use time on nomophobia of high school students, who are thought to experience the fear of being away from smartphones intensely due to the increase in the frequency of smartphone use. The sample of the study, in which relational survey model, one of the cross-sectional descriptive research methods, was used, consists of 274 high school students. The research data were collected with Personal Information Form, Nomophobia Scale, UCLA Loneliness Scale Short Form and School Sense of Belonging Scale. The relationship between variables in the analysis of the data is defined by Pearson Correlation analysis; Multiple linear regression analysis was used to determine the effect of independent variables on the dependent variable. The findings obtained in the research; It shows that the average daily smartphone usage time of high school students receiving vocational education is 3.63 hours, students show moderate nomophobic behaviors, high levels of school commitment and belonging, but students have high levels of loneliness. It has been determined that there is a moderate and weak negative significant relationship between students' economic status, sense of belonging and commitment to school, all sub-dimensions of nomophobia and the level of nomophobia, and that school belonging affects nomophobia negatively and significantly. It has been determined that there is a significant positive relationship between loneliness and smartphone usage time and Nomophobia, and that loneliness and smartphone usage time positively affect nomophobia. In line with these results, it is recommended to implement activities that will increase students' commitment to school in order to reduce their nomophobia and loneliness levels.

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