Osman Tolga Aricak is an Associate Professor of Educational Psychology. He received his Ph.D. from the Marmara University in Istanbul. Tolga focuses on the prevention and intervention of cyberbullying. Along with his colleagues, he developed quantitative measures for cyberbullying, cybervictimization, and cyberbullying sensibility, and also developed a program to enhance the sensibility towards cyberbullying. He is also interested in multivariate statistics and structural equation modeling. Tolga is collaborating with the Youth and Media team on ongoing work about online privacy, safety, and information quality; he serves as a methodologist and statistician for the project.