The Impact of Playing Tetris on Migrants' Mental Health

This study examines if playing Tetris prevents the development of Post-traumatic stress disorder or related anxiety and depressive symptoms. The investigators recruit 300 participants in total in Greece and in the Netherlands. The participants are immigrants who have applied for asylum at any point in the past. The participants are asked to answer three questionnaires (on Post-traumatic stress disorder, related anxiety and depressive symptoms, and post-migration living difficulties) on a recurring basis - once every 4 weeks, 12 times in total. Half of the participants (treatment group) are randomly selected to play Tetris after completing the questionnaires. Participants in the treatment group are instructed to play Tetris for at least 15 minutes while trying to remember bad things that recently happened to them. Tetris is administered at three instances and participants in the treatment group are encouraged to play Tetris in case of experiencing any traumatic events or having any intrusive memories during the course of the study.