The health benefits of therapeutic writing have been studied since the 1980s, but a new study from researchers at Boston University found that writing exposure therapy is as effective as other forms of therapy recommended by the Department of Veterans Affairs to treat post traumatic stress disorder. We talked to one of the authors of the study, Denise Sloan, who’s a psychologist and the associate director of the Behavioral Science Division of the National Center for PTSD, and Professor of Psychiatry at Chobanian and Avedisian School of Medicine, Boston University.