Joy DeGruy is an American author, educator, and speaker known for her work on the psychological effects of racism and trauma. She is best known for her book, Post Traumatic Slave Syndrome, which explores the generational trauma experienced by African Americans due to the legacy of slavery and systemic racism. DeGruy emphasizes the importance of understanding this history to address current social issues. In addition to her writing, DeGruy is a professor and has delivered numerous lectures and workshops on topics related to race, mental health, and social justice. Her work aims to promote healing and understanding within communities affected by historical and ongoing oppression.