<P> Although biographers agree about Mayo's contributions, there is no consensus about his credentials . The Encyclopædia Britannica, biographical dictionaries, and some published texts indicate that Mayo was a psychologist . Some authors and critics have discussed Mayo's credentials and his various other job titles during his career in the United States . Cullen does not mention that Mayo was a psychologist although Cullen noted that Mayo let interlocutors call him "Dr. Mayo," letting himself be cast as a Ph. D. in one of the social sciences, without correcting the mistake . Mayo's biographer Trahair wrote, "Mayo was not a psychologist, sociologist, or anthropologist, although sometimes he was cast as such" (p. 357). Trahair also wrote that "after the great war Mayo's reputation grew as a successful academic, clinical psychologist and public speaker" (p. 89). Of course having a reputation as a clinical psychologist does not necessarily make one a clinical psychologist (the public often thinks of psychotherapists, regardless of training, as clinical psychologists or even psychiatrists). </P> <P> Cullen indicated that Mayo was not a medical doctor, writing that in April 1903, Mayo "enrolled at a small medical school at Saint George's Hospital at London...At this point, Mayo's interest in medicine was all but non-existent" (p. 28). Having dropped out by December 1903, Mayo "wrote home and finally revealed to his family the truth; he did not and could not become a doctor" (p. 28). Miner wrote: "An effective speaker and proficient in cultivating influential friends and mentors, he nevertheless had little by way of academic credentials and practically no training in the conduct of scientific research" (p. 60). </P> <P> Mayo's contributions to management theory were criticised by intellectual Daniel Bell . Writing in 1947, Bell criticised Mayo and other social scientists for "adjusting men to machines," rather than enlarging human capacity or human freedom . Many, including Reinhard Bendix and Lloyd H. Fisher, criticized Mayo for generalizing his results of the Hawthorne studies . The two state that Mayo's research concerned small, isolated groups, and it was not clear that the conditions and supervision he achieved could have been replicated in large groups and factory settings . His theories are also based upon the assumption that humans, by nature, want to cooperate and form groups, and he never allows for the possibility of José Ortega y Gasset's idea of "the stranger," built upon the proposition that humans, by nature, are suspicious of others . More recently, in 2003, James Hoopes criticised Mayo for "substituting therapy for democracy ." Re-analyses of the original Hawthorne data indicate that the quality of the research was poor . </P> <P> Elton Mayo married Dorothea McConnel (--) on 18 April 1913 . Dorothea was the eldest daughter of James Henry McConnel (c. 1850--7 June 1914) of Cressbrook Station, Queensland and the sister of Ursula McConnel . They had two daughters: </P>

Who is a manager according to elton mayo