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Daniel McCartney (September 10, 1817 – November 15, 1887) was an American who had (what is now known as) Highly Superior Autobiographical Memory (HSAM). McCartney was born in Westmoreland County, Pennsylvania. He was legally blind and lived with relatives throughout his lifetime. For a large part of his life, he resided in Morrow County, Ohio, before his final days in Muscatine, Iowa. He never married. McCartney was famous for his mental ability in two specific areas, memory and calculation.

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  • Daniel McCartney (en)
  • Daniel McCartney (es)
  • Daniel McCartney (pt)
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  • Daniel McCartney (10 de septiembre de 1817 - 15 de noviembre de 1887) fue un hombre que podría haber tenido lo que hoy se conoce como hipermnesia. El ser invidente no le impidió desarrollar una asombrosa habilidad como calculista mental. (es)
  • Daniel McCartney (September 10, 1817 – November 15, 1887) was an American who had (what is now known as) Highly Superior Autobiographical Memory (HSAM). McCartney was born in Westmoreland County, Pennsylvania. He was legally blind and lived with relatives throughout his lifetime. For a large part of his life, he resided in Morrow County, Ohio, before his final days in Muscatine, Iowa. He never married. McCartney was famous for his mental ability in two specific areas, memory and calculation. (en)
  • Daniel McCartney (10 de Setembro de 1817 - 15 de Novembro de 1887) foi um americano que tinha o que é conhecido hoje como HSAM - Highly Autobiographical Memory, ou simplesmente Hipertimesia. McCartney nasceu no condado de Westmoreland, na Pensilvânia . Ele era legalmente cego e morou com parentes durante toda sua vida. Durante grande parte de sua vida, ele residiu em Morrow County, Ohio, antes de seus últimos dias em Muscatine, Iowa. Nunca se casou. Ele morreu aos 70 anos em Wilton, Iowa. McCartney foi relatado como uma das grandes calculadoras humanas da história (Henkle, 1871). (pt)
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  • Daniel McCartney (en)
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  • Daniel McCartney (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Portrait_daniel_mccartney.jpg
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  • Daniel McCartney (September 10, 1817 – November 15, 1887) was an American who had (what is now known as) Highly Superior Autobiographical Memory (HSAM). McCartney was born in Westmoreland County, Pennsylvania. He was legally blind and lived with relatives throughout his lifetime. For a large part of his life, he resided in Morrow County, Ohio, before his final days in Muscatine, Iowa. He never married. McCartney was famous for his mental ability in two specific areas, memory and calculation. He remembered every single day in his life from the age of nine until his death. Given any specific calendar date, McCartney could, in seconds, give the day of the week, describe the weather conditions, describe what he did during the day, describe what he ate during the day, and provide details of local, regional and national events on that day. In a similar case to McCartney's, noted neurobiologist James McGaugh of the University of California, Irvine, one of the world's leading experts on human memory, reported a woman, Jill Price, with the astonishing ability to clearly remember events that happened to her decades before. McGaugh labeled this one-of-a-kind ability as Hyperthymesia (National Public Radio, 2006). McCartney's mental aptitude appears to be nearly identical to this recent case reported in McGaugh's study. McCartney, however, had an additional mental ability: mathematical computation. McCartney could mentally compute difficult mathematical computations in seconds, and extremely difficult ones in minutes. McCartney was tested several times by panels of university mathematicians in which he was given a battery of mathematical questions. On one such examination in July 1870 in Salem, Ohio, McCartney was asked to take 89 to the sixth power, which he mentally computed in ten minutes, giving the correct answer of 496,981,290,961. On another examination he was asked to provide the cube root of 4,741,632 for which he answered correctly in three minutes-(168); and 389,017 for which he answered correctly in fifteen seconds-(73). On occasion, special sessions for the general public were held to witness mental examinations of McCartney's unique abilities. During these public exhibitions, he was always correct in his responses, and would provide a response in a matter of seconds to the amazement of audiences. He died at the age of 70 in Wilton, Iowa. McCartney was reported to be one of a number of great mental calculators (Henkle, 1871). (en)
  • Daniel McCartney (10 de septiembre de 1817 - 15 de noviembre de 1887) fue un hombre que podría haber tenido lo que hoy se conoce como hipermnesia. El ser invidente no le impidió desarrollar una asombrosa habilidad como calculista mental. (es)
  • Daniel McCartney (10 de Setembro de 1817 - 15 de Novembro de 1887) foi um americano que tinha o que é conhecido hoje como HSAM - Highly Autobiographical Memory, ou simplesmente Hipertimesia. McCartney nasceu no condado de Westmoreland, na Pensilvânia . Ele era legalmente cego e morou com parentes durante toda sua vida. Durante grande parte de sua vida, ele residiu em Morrow County, Ohio, antes de seus últimos dias em Muscatine, Iowa. Nunca se casou. McCartney era famoso por sua habilidade mental em duas áreas específicas. Primeiro, ele se lembrava de todos os dias da sua vida, dos nove anos até sua morte. Dada qualquer data específica do calendário, McCartney em segundos poderia dar o dia da semana, descrever as condições do tempo, o que fez durante o dia, o que comeu durante o dia e fornecer detalhes sobre eventos locais, regionais e nacionais daquele dia. Em um caso atual semelhante ao de McCartney, o conhecido neurobiólogo James McGaugh, da Universidade da Califórnia em Irvine, um dos maiores especialistas mundiais em memória humana, relata uma mulher, Jill Price, com a incrível capacidade de lembrar claramente eventos que ocorreram em suas décadas passadas. McGaugh rotula essa habilidade única como Hipertimésia (National Public Radio, 2006). McCartney, no entanto, também tinha uma segunda capacidade mental: cálculo matemático. McCartney podia calcular mentalmente cálculos matemáticos difíceis em segundos, e extremamente difíceis em minutos. McCartney foi testado várias vezes por painéis de matemáticos universitários nos quais recebeu uma bateria de perguntas matemáticas. Em um desses exames em Julho de 1870, em Salem, Ohio, McCartney foi solicitado a elevar 89 para a sexta potência, o que ele calculou mentalmente em dez minutos, dando a resposta correta de 496.981.290.961. Em outro exame, ele foi solicitado a fornecer a raiz cúbica de 4.741.632, para o qual ele respondeu corretamente em três minutos (168); e de 389.017 para o qual ele respondeu corretamente em quinze segundos (73). Ocasionalmente, sessões especiais para o público em geral foram realizadas para testemunhar exames mentais das habilidades únicas de McCartney. Durante essas exibições públicas, ele estava sempre correto em suas respostas e forneceria uma resposta em questão de segundos para o espanto do público. Ele morreu aos 70 anos em Wilton, Iowa. McCartney foi relatado como uma das grandes calculadoras humanas da história (Henkle, 1871). (pt)
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