Robert Hare is a Canadian psychologist best known for his research on psychopathy. He developed the Hare Psychopathy Checklist, a tool used to assess the presence of psychopathic traits in individuals, particularly in criminal populations. His work has significantly influenced the fields of psychology and criminology. Hare's research has contributed to a better understanding of the characteristics and behaviors associated with psychopathy, including lack of empathy, manipulativeness, and impulsivity. He has authored several books and articles on the subject, making him a prominent figure in the study of psychopathy and its implications for society and mental health.