Clarissa is a member of the International Mental Health Collaborating Network. She is a psychologist and researcher, professor of Psychology at the University of Sao Paulo (USP) – Brazil. She is the head of the Laboratory for Teaching and Research in Psychopathology, Drugs and Society (LePsis-USP). She trains psychology students to work in the Centers of Psychosocial Attention (CAPS) mental health services in Brazil. Her research concentrates on evaluate those services and proposes innovative intervention in mental health. She is an advocator of the Hearing Voice Movement in Brazil, working close with Hearing Voice Groups, helping to potentialize their actions. She also conducts research about hearing voice groups, analyzing their potential and their development in Brazil.