Mariusz KrukMariusz Kruk , Ph.D., works at the University of Zielona Góra, Poland. He studied Russian philology (Pedagogical University in Zielona Góra, Poland) and English philology (Adam Mickiewicz University, Kalisz, Poland). His main research interests inclue computer-assisted language learning, virtual worlds, learner autonomy, motivation, anxiety and boredom in the L2 classroom. Read More Read Less