Randy O. Frost is an American psychologist recognized for his work in the study of hoarding behavior and obsessive-compulsive disorder (OCD). He is a prominent researcher in the field and a professor at Smith College in Northampton, Massachusetts. Frost has co-authored several significant works on hoarding, including the book "Stuff: Compulsive Hoarding and the Meaning of Things," which provides insights into the psychology of people who accumulate possessions to a debilitating degree. His research has contributed to a greater understanding of hoarding as a distinct psychological condition, which has had implications for diagnosis, treatment, and public policy. Frost is also known for his efforts in developing intervention strategies and therapies to assist individuals dealing with hoarding and related issues.