PSYCHOPATHY is mentioned by Alan when he has an imaginary talk with Charlie. This is defined as a neuropsychiatric disorder marked by deficient emotional responses, lack of empathy, and poor behavioral controls, commonly resulting in persistent antisocial deviance and criminal behavior.
When Alan was having his therapy session with Charlie, Charlie suggests that Alan has strength since he used to wrestle. Steve Carell (Alan) played John DuPont in Foxcatcher, a movie about Du Pont, a wealthy philanthropist, who became a prominent supporter of amateur sports in the United States and a sponsor of USA Wrestling. DuPont was ultimately convicted of murdering Olympic freestyle wrestling champion Dave Schultz.