Dr. Matthieu’s interests and research topics include implementing and evaluating evidence-based suicide prevention programs into new communities, clinical services for populations coping with extreme stress or trauma, the clinical providers’ role in organizational change efforts, and the impact of disasters on clinical providers and their wellbeing.

Dr. Matthieu started working with veterans, families and communities in 1994 as a social work intern and continued full time from 1995 until 2000 as a Clinical Social Worker with the Department of Veterans Affairs, Readjustment Counseling Service's Veterans Resource Center in New Orleans, Louisiana.    

She received her Ph.D. in Social Work from Columbia University in New York and MSW degree from Tulane University in New Orleans.

In 2007, Dr. Matthieu joined the faculty at the Brown School of Social Work at Washington University in St. Louis as a research assistant professor. Prior to this position, she was a National Research Service Award (NRSA) postdoctoral fellow at the Center for the Study and Prevention of Suicide at the University of Rochester.   

She has previously served as a Disaster Mental Health Volunteer with the American Red Cross where she has worked closely with victims of hurricanes, tornadoes, and September 11th.