Arthur Caye is a child and adolescent psychiatrist and a Professor of the Post-Graduate Program in Psychiatry at the Universidade Federal do Rio Grande do Sul, Brazil. He has worked with predictive models for the last  6 years, developing and replicating risk scores to predict the onset of adolescent depression (the IDEA-RS) and the persistence/onset of attention-deficit/hyperactivity in adulthood. He has also collaborated with UNICEF's State of the World's Children Report specifically to discuss risk factors for child and adolescent mental disorders worldwide, and with the Child Mental Health Initiative helping to design nationwide surveys to detect the levels of mental health symptoms in Greek children and adolescents. Currently, he is the research manager of the National Center for Research and Innovation in Mental Health, which received the largest funding ever dedicated to psychiatry and mental health in Brazil.