Thomas A. Widiger (born 1952) is an American clinical psychologist who researches the diagnosis and classification of psychopathology.
[1] He had an early interest in writing in literature and attended Delta College for an associate degree in liberal arts, graduating in 1972.
While at UK, he was on the advisory committee for DSM-III-R and served as the first research coordinator for DSM-IV.
[2] As of 2021, Widiger is still employed at UK; he has been the T. Marshall Hahn Professor of Psychology, an endowed chair, since 2006.
[1] He is the editor of Personality Disorders: Theory, Research, and Treatment and co-editor of the Annual Review of Clinical Psychology.