Richard T. Liu, PhD is the Director of Suicide Research in the Division of Child and Adolescent Psychiatry at MGH, Director of Big Data Studies in the Depression Clinical and Research Program at MGH, and an Associate Professor of Psychology at Harvard Medical School.  The primary focus of his research is on depression, suicide, and non-suicidal self-injury (NSSI) in childhood through emerging adulthood, with a particular emphasis on characterizing dynamic processes of risk underlying onset and recurrence of these clinical concerns.