Objectives: The goals of this research were to evaluate how much young people know about modern addictions and if they know how to recognize their own addictions as well as to examine the connection between modern addictions with regard to age, gender and type of school. Study design: Cross-sectional study Examinees and methods: The study included examinees which were coming to outpatient or inpatient treatment at the Department of Child and Adolescent Psychiatry of University Centre Osijek in July and August of 2024. Examinees filled out a questionnaire made for this research, where their knowledge about modern addictions was checked trough 21 questions, and the data was analyzed with regard to age, gender and type of school. Results: The research was conducted on 90 subjects, 52 % of whom were boys, and 48 % were girls in the age range of 11 to 18. According to the obtained results, the median number of correct answers was nine, and the largest number of respondents had six correct answers out of a possible 21. These results indicate poor and insufficient knowledge of the respondents about modern addictions. Furthermore, the results showed that the differences are not significant when knowledge about modern addictions is examined with regard to age, gender and type of school. Conclusion: Young people do not have enough knowledge about modern, i.e., behavioral addictions, and the differences in knowledge with regard to the age, gender and type of school of the examinees are not significant.