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Imbecile was a medical category of people with moderate to severe intellectual disability, as well as a type of criminal.〔Fernald, Walter E. (1912). ''The imbecile with criminal instincts.'' Fourth edition. Boston: Ellis. .〕〔Duncan, P. Martin; Millard, William (1866). ''A manual for the classification, training, and education of the feeble-minded, imbecile, and idiotic.'' Longmans, Green, and Co.〕 The term arises from the Latin word ''imbecillus'', meaning weak, or weak-minded. It included people with an IQ of 26–50, between "moron" (IQ of 51–70) and "idiot" (IQ of 0–25).〔Sternberg, Robert J. (2000). ''Handbook of Intelligence.'' Cambridge University Press. ISBN 978-0-521-59648-0.〕 The meaning was further refined into mental and moral imbecility.〔Kerlin, Isaac N. (1889). "Moral imbecility". ''Proceedings of the Association of Medical Officers of American Institutions for Idiotic and Feeble-minded Persons'', 15–18.〕〔Fernald, Walter E. (1 April 1909). ("The imbecile with criminal instincts" ). ''American Journal of Psychiatry''. 65(4):731–749.〕 The concepts of "moral insanity", "moral idiocy"," and "moral imbecility", led to the emerging field of eugenic criminology, which held that crime can be reduced by preventing "feeble-minded" people from reproducing.〔Rafter, Nicole Hahn (1998). ''Creating Born Criminals.'' Urbana, Ill.: University of Illinois Press. ISBN 978-0-252-06741-9.〕〔Tredgold, A. F. (1921). "Moral Imbecility". ''Proc R Soc Med'', 1921; 14(Sect Psych): 13–22.〕 "Imbecile" as a concrete classification was popularized by psychologist Henry H. Goddard〔Goddard, Henry Herbert (1915). ''(The Criminal Imbecile; an Analysis of Three Remarkable Murder Cases )''. New York: The Macmillan Company.〕 and was used in 1927 by United States Supreme Court Justice Oliver Wendell Holmes, Jr. in his ruling in the forced-sterilization case ''Buck v. Bell'', 274 U.S. 200 (1927).〔Lombardo, Paul A. (2008). ''Three Generations, No Imbeciles: Eugenics, the Supreme Court, and Buck V. Bell.'' JHU Press, ISBN 978-0-8018-9010-9〕 The concept is closely associated with psychology, psychiatry, criminology, and eugenics. However, the term ''imbecile'' quickly passed into vernacular usage as a derogatory term, and fell out of professional use in the 20th century〔Kaplan, Robert M.; Saccuzzo, Dennis P. (2008). ''Psychological Testing: Principles, Applications, and Issues.'' Cengage Learning, ISBN 978-0-495-09555-2〕 in favor of ''mental retardation''. In recent decades, the phrases "mental retardation", "mentally retarded", and "retarded" initially used in a medical manner, are regarded as derogatory and politically incorrect much like ''moron'', ''imbecile'', ''cretin'', ''dolt'' and ''idiot'', formerly used as scientific terms in the early 20th century. On October 5, 2010, President of the United States Barack Obama signed Senate Bill 2781, known as "Rosa's Law", which changed references in many Federal statutes that referred to "mental retardation" to refer instead to "intellectual disability".〔Sweet, Lynn (October 5, 2010). "(Obama signs 'Rosa's Law;' 'mental retardation' out, 'intellectual disability' in )". ''Chicago Sun-Times''.〕 ==See also== *Euphemism treadmill 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Imbecile」の詳細全文を読む スポンサード リンク
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