M. Susan Folkman is a prominent psychologist known for her work in the field of stress and coping. She is best recognized for developing the Coping Theory, which explores how individuals manage stress and adapt to challenging situations. Her research has significantly contributed to understanding the psychological processes involved in coping mechanisms. Folkman has co-authored several influential publications, including the Stress and Emotion book series. She has also served as a professor at the University of California, San Francisco, where she has focused on the intersection of psychology and health. Her work continues to impact both academic research and practical applications in mental health.