Maria Yellow Horse Brave Heart

The unresolved grief intervention developed by Brave Heart was considered an outstanding model, one which won a special minority Center for Mental Health Services grant award for Lakota Regional Community Action Grant Historical Trauma in 2001. Dr. Brave Heart was also responsible for the incorporation of techniques designed to intervene and enhance reservation parenting through a number of successful grants. She was also known for the coordination and directing of several Models for Indigenous Survivors of Historical Trauma: A Multicultural Dialogue Among Allies Conferences between 2001 and 2004, and served as both member and host of conferences for the International Society for Traumatic Stress Studies. Dr. Brave Heart was also on the Board of Directors for the Council on Social Work Education and acted as an adviser/consultant to the National Indian Country Child Trauma Center.

In 2000, Brave Heart published the article, "Wakiksuyapi: Carrying the Historical Trauma of the Lakota." Using the historical trauma research conducted in survivors of the Holocaust, Brave Heart would identify a comparable cluster of events correlated with massive group trauma across generations, including the 1890 Wounded Knee Massacre and the forced removal of children to federal boarding schools. She conceptualized the current form of historical trauma in the 1980s as a way to comprehend what she observed as many Native Americans being unable to fulfill "the American Dream". Her most significant findings came in a cluster of six symptoms:

In 1992, Brave Heart established the Takini Network, a Native nonprofit organization dedicated to healing the wounds inflicted on Native Americans through the experiences of intergenerational trauma, located in Rapid City, South Dakota.

Brave Heart returned to school in 1990 after working in the field of social work, and in 1995, she earned her doctorate in clinical social work from the Smith College School for Social Work. The dissertation was entitled, "The Return to the Sacred Path: Healing from Historical Trauma and Historical Unresolved Grief Among the Lakota." Dr. Brave Heart was a tenured faculty member at the University of Denver Graduate School of Social Work and Coordinator of the Native People's Curriculum Project, which operated in the Denver and the Four Corners region and covered the Navajo and Ute reservations. In addition to a career as an associate professor at the Columbia University School of Social Work, Dr. Brave Heart also served as a clinical intervention research team member at the Hispanic Treatment Program, located at the New York State Psychiatric Institute/Columbia University Medical School.

Since 1976, Brave Heart has worked directly in the field to gather information on the impact of historical trauma within the indigenous communities. These groups include the Lakota in South Dakota, multiple tribes in New Mexico, and populations of indigenous and Latinos in Denver, New Mexico and New York. Dr. Brave Heart is also responsible for hosting and presenting over 175 presentations on subject matter related to historical trauma as well as training numerous tribes across the United States and First Nations populations in the country of Canada.

Maria Yellow Horse Brave Heart is known for developing a model of historical trauma, historical unresolved grief theory and interventions in indigenous peoples. Brave Heart earned her Master of Science from Columbia University School of Social Work in 1976.