Dr Frank Tallis is a writer and clinical psychologist. He has held lecturing posts in clinical psychology at the Institute of Psychiatry and neuroscience at King's College London.

He has published over 30 scientific papers in international journals and has written a textbook on cognitive and neuropsychological aspects of Obsessive Compulsive Disorder (OCD).

He has written three works of psychology for the lay reader: Changing Minds (a history of psychotherapy), Hidden Minds (a history of the unconscious) and Lovesick (an exploration of the relationship between romantic love and mental illness).