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Factors and primes: a specific numerical ability

Published online by Cambridge University Press:  09 July 2009

B. Hermelin and
N. O'Connor
B. Hermelin*
Affiliation:
MRC Developmental Psychology Project, Institute of Education, University of London
N. O'Connor
Affiliation:
MRC Developmental Psychology Project, Institute of Education, University of London
*
1Address for correspondence: Dr B. Hermelin MRC Developmental Psychology Project, Institute of Education, 18, Woburn Square, London WC1H 0NS.
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Synopsis

An autistic young man and a normal control were asked to factorize numbers and to recognize and generate primes. Both subjects made a similar of errors and employed similar strategies, but they differed markedly in the speeds at which the arithmetical operations were carried out.

Information

Type
Original Articles
Information
Psychological Medicine , Volume 20 , Issue 1 , February 1990, pp. 163 - 169
Copyright
Copyright © Cambridge University Press 1990

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References

Aitken, A. C. (1954). The art of mental calculation: with demonstrations. Translations of the Society of Engineers, 44, 295–309.Google Scholar
Anderson, M. (1986). Understandinig the cognitive deficit in mental retardation. Journal of Child Psychology and Psychiatry 27, 297–306.CrossRefGoogle ScholarPubMed
Binet, A. (1894). Psychologie des Grandes Calculateurs (et de Joueurs d' Échecs). Hachette: Paris.Google Scholar
Hermelin, B. ' O'Connor, N. (1983). The idiot-savant: flawed genius or clever Hans? Psychological Medicine 13, 479–481.CrossRefGoogle ScholarPubMed
Hermelin, B. ' O'Connor, N. (1986). Idiot-savant calendrical calculators: rules and regularities. Psychological Medicine 16, 885–893.CrossRefGoogle ScholarPubMed
Hermelin, B., O'Connor, N., Lee, S. & Treffert, D. (1989). Intelligence and musical improvisation. Psychological Medicine 19, 447–457.CrossRefGoogle ScholarPubMed
Horwitz, W., Kestenbaum, C., Person, E. ' Janik, L. (1965). Identical twin ‘idiots-savants’ calendar calculators. American Journal of Psychiatry 121, 1075–1079.CrossRefGoogle Scholar
Jensen, A. R. (1979). Reaction time, movement time, and intelligence, Intelligence 3, 121–126.CrossRefGoogle Scholar
Morton, J. (1968). Grammar and Computation in Language Behaviour. In Studies in Language and Language Behaviour (ed. Catford, J. C.). pp. 499–541.Progress Report. VI, Ann Arbor. University of Michigan.Google Scholar
O'Connor, N. & Hermelin, B. (1984). Idiot-Savant calendrical calculators: maths or memory? Psychological Medicine 14, 801–806.CrossRefGoogle ScholarPubMed
O'Connor, N. & Hermelin, B. (1987). Visual memory and motor programmes: their use by idiot-savant artists and controls. British Journal of Psychology 78, 307–323.CrossRefGoogle ScholarPubMed
Smith, S.B. (1983). The Great Mental Calculators. Columbia University Press: New York.Google Scholar
Spearman, C. (1927). The Abilities of Man. New York.Google Scholar