From Wikipedia:
In 1943, the Office of Strategic Services (OSS) published "A Psychological Analysis of Adolf Hitler: His Life and Legend". On page 138, Hitler is described as "an extreme masochist". It should be noted, however, that this conclusion is not without its detractors. In "Hitler and Psychohistory," Hans Gatzke argues that many of the report's conclusions are "based on nonexistent, unreliable, or misinterpreted evidence" which "historians would not accept ... as valid".[4] Journalist Ron Rosenbaum, in his book Explaining Hitler, actually made a point of tracking down the psychologists who contributed to this OSS report (but whom Langer did not directly acknowledge), and found that they denied ever making such diagnoses or claims on Hitler's paraphilias. According to his interviews, Rosenbaum found that much of the claims in the OSS report were apparently made up by its author, Langer. Rosenbaum suggested that Langer may have written such claims for entertainment value, noting that in the preface of the original report, Langer himself admitted that by the time he wrote it (1943), the Allies already considered the war against the Axis won, and as such, the report may not have had much strategic value.