The COVID-19 pandemic has become a major health problem worldwide. In addition to the physical effects of COVID-19 on individuals, it has caused psychological and social problems on individuals. One of these problems is related to feelings of loneliness they experienced during the pandemic process and the increase in aggression and smartphone addiction levels, which are thought to be related. The main goal of current research is to explore the effects of loneliness and aggression behaviors on smartphone addiction. The data of the study were obtained from 843 university students (565 female and 278 male; 17-54 age range) who voluntarily participated in the research from 68 of 81 provinces in Turkey. Research data were obtained based on participants' self-reports through an online questionnaire. Personal information form, Smartphone Addiction Scale, UCLA Loneliness Scale, and Buss-Perry Aggression Questionnaire were used as data collection tools. Research findings show that the feeling of loneliness affects aggression behaviors and smartphone addiction, and aggression behaviors also affect smartphone addiction. Therefore, it can be said that loneliness and aggression are variables in predicting university students' smartphone addiction.

The study examined the relationship between democratic, authoritarian, and protective-demanding parental attitudes, obsessive-compulsive disorder (OCD), and Instagram addiction. It is based on the correlational research design in

Individual and multiple games played on the Internet are seen as a popular leisure activity, which is becoming increasingly common among young people. With the Covid 19 pandemic, the interest in Internet games has increased because young people spend more time at home. This has led to an increase in Internet gaming disorder, which is recognized by the American Psychiatric Association and the World Health Organization. When the literature is examined, attention is drawn to the importance of revealing the factors associated with Internet gaming disorder to combat Internet gaming disorder in young people. This research was carried out to reveal the Internet gaming disorder profiles of university students in Turkey and to determine the factors associated with it. In this direction, the structural relationships between cyberloafing, narcissism, locus of control, and social appearance anxiety variables, which are thought to be associated with Internet gaming disorder, were examined. The research data were obtained from 596 university students studying in various cities in Turkey. Research findings show that cyberloafing and locus of control directly affect Internet gaming disorder. Narcissism, on the other hand, has been shown to have a mediating effect on Internet gaming disorder through