In addition to being on faculty, she is the Director of the Adult Competency Restoration Program at UT-Harris County Psychiatric Center (UT-HCPC). For several years, Dr. Johnson provided psychological services to the children, adolescents, and adults at UT-HCPC. Dr. Johnson has conducted numerous presentations regarding multiculturalism, mood disorders, and suicidality. She has published research in major academic journals regarding the impact of racism on African-American's well-being. She is particularly passionate about reducing the stigma of mental health in the African-American community.