Collins, Marietta: - Marietta Collins, PhD, is a faculty member at Morehouse School of Medicine, providing psychological services to underserved adults, youth, and families. Marietta is also involved in community advocacy efforts focused on children's behavioral health and social justice in the Atlanta, GA, area. She is a co-author with Drs. Hazzard and Celano of the New York Times bestselling Something Happened in Our Town and Something Happened in Our Park.