Abstract
A controversy whether developmental dyslexia is qualitatively different from other forms of reading disability has existed among reading specialists for many years. In the present study, the hypothesis that the etiology of dyslexia is different from that of other forms of reading disability because of differences in the components that malfunction was tested. A number of studies have shown that the two components that contribute to a large proportion of variance in reading are decoding and comprehension. It is, therefore, possible that a breakdown of different components could lead to different forms of disabilities. College students who were poor readers were assigned to two groups on the basis of their IQ. Conforming to the traditional criterion of dyslexia, those who had an IQ of 95 and above were considered as dyslexic. Those who had an IQ of 85 or below were placed in the Nonspecific Reading-Disabled group. These two groups of poor readers and a group of normal readers were administered a large number of reading-related tests. It was found that the two reading-disabled groups differed from each other in six of the seven areas assessed. There was very little overlap of scores between the two groups in these areas. The results were interpreted to suggest that poor decoding skill is the etiology of developmental dyslexia and that it differs from other forms of reading disability which are caused by generalized cognitive deficits.
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References
Baker, L., and Brown, A. L. 1984. Cognitive monitoring in reading.In J. Flood (ed.).Understanding Reading Comprehension. Newark, DE: International Reading Association.
Bloom, A., Wagner, M., Reskin, L., and Bergman, A. 1980. A comparison of intellectually delayed and primary reading disabled children on measures of intelligence and achievement.Journal of Clinical Psychology 36(3):788–790.
Chomsky, C. 1969. The acquisition of syntax in children from 5 to 10. Research Monograph, 57. Cambridge, MA: The MIT Press.
Coltheart, M. 1984. Acquired dyslexias and normal reading.In R. N. Malatesha and H. Whitaker (eds.).Dyslexia: A Global Issue. The Hague: Martinus Nijhoff.
Cooper, W., and Cooper, J. 1980.Syntax and Speech. Cambridge, MA: Harvard University Press.
Cooper, L. A., and Reagan, D. T. 1982. Attention, perception, and intelligence.In R. Sternberg (ed.).Handbook of Human Intelligence. NY.: Cambridge University Press.
Cromer, R. F. 1970. Children are nice to understand: Surface structure clues for the recovery of deep structure.British Journal of Psychology 61:397–408.
Davis, R. D. and Cashdon, A. 1963. Specific dyslexia.British Journal of Educational Psychology 33:80–82.
Dewey, G. 1970.Relative Frequency of English Spellings. New York: Teachers College, Columbia University Press.
Drum, P. A., Calfee, R. C., and Cook, L. 1981. The effects of surface structure variables on performance in reading comprehension tests.Reading Research Quarterly 12(4):486–514.
Durrell, D. D. 1955.Durrell Analysis of Reading Disability. New York: Harcourt, Brace, and Jovanovich.
Frith, U. and Snowling, M. 1983. Reading for meaning and reading for sound in autistic and dyslexic children.British Journal of Developmental Psychology 1:329–342.
Golinkoff, R. M. 1975. A comparison of reading comprehension process in good and poor comprehenders.Reading Research Quarterly 4:623–659.
Guthrie, J. T. 1973. Reading comprehension and syntactic responses in good and poor readers.Journal of Educational Psychology 65:294–299.
Guthrie, J. T., and Seifert, M. 1978. Education for children with reading disabilities.In H. R. Myklebust (ed.).Progress in Learning Disabilities. Vol. 4. New York: Grune and Stratton.
Healy, J. M. 1982. The enigma of hyperlexia.Reading Research Quarterly 17(3):319–338.
Hinshelwood, J. 1917.Congenital Word-blindness. London: H. K. Lewis.
Jackson, M. D. and McClelland, J. L. 1979. Processing determinants of reading speed.Journal of Experimental Psychology (general) 108:151–181.
Kameenui, E., and Carnine, D. 1982. Investigation of fourth graders’ comprehension of pronoun constructions in ecologically valid tests.Reading Research Quarterly 17(4):556–580.
Karlsen, B., Madden, R., and Gardner, E. G. 1974.Stanford Diagnostic Reading Test. New York: Harcourt, Brace, and Jovanovich.
Lehiste, I. 1970.Suprasegmentals. Cambridge, MA: The MIT Press.
Lesgold, A. M. 1974. Variability in children’s comprehension of syntactic structures.Journal of Educational Psychology 66(3):333–338.
Liberman, I. Y., Shankweiler, D., Liberman, A. M., Fowler, C., and Fischer, W. 1977. Phonetic segmentation and recoding in the beginning reader.In A. S. Reber and D. L. Scarborough (eds.).Toward a Psychology of Reading. Hillsdale, NJ: Lawrence Erlbaum.
Mann, V. 1984. Reading skill and language skill.Developmental Review 4:1–15.
Mann, V. 1986. Why some children encounter reading problems: The contribution of difficulties with language processing and phonological sophistication to early reading disability.In J. K. Torgesen and B. Y. Young (eds.).Psychological and Educational Perspectives on Learning Disabilities. Orlando, FL.: Academic Press.
Orton, S. 1937.Reading, Writing, and Speech Problems in Children. New York: Norton and Co.
Palmer, J., McCleod, C., Hunt, E., and Davidson, J. 1985. Information processing correlates of reading.Journal of Memory and Language 24:59–88.
Patterson, K. E., Marshall, J. C., and Coltheart, M. 1985.Surface Dyslexia: Neuropsychological and cognitive studies of phonological reading. Hillsdale, NJ.: Lawrence, Erlbaum.
Perfetti, C. A., and Roth, S. 1981. Some of the interactive processes of reading and their role in reading skill.In A. Lesgold and C. Perfetti (eds.).Interactive Processes in Reading. Hillsdale, NJ: Lawrence Erlbaum.
Schonell, F. J. 1935. Diagnostic tests for specific disabilities in school subjects.Year Book of Education. London: Evans.
Smiley, S. S., Oakley, D. D., Worthen, D., Campione, J. J., and Brown, A. L. 1977. Recall of thematically relevant material by adolescent good and poor readers as a function of written versus oral presentation.Journal of Educational Psychology 69(4):381–397.
Stanovich, K. E. 1980. Toward an interactive compensatory model of individual differences in the development of reading fluency.Reading Research Quarterly 16:32–71.
Taylor, G. H., Satz, P., and Friel, J. 1979. Developmental dyslexia in relation to other childhood reading disorders: Significance and clinical utility.Reading Research Quarterly 15:84–101.
Vogel, S. 1975.Syntactic Abilities in Normal and Dyslexic Children. Baltimore, MD.: University Park Press.
Young, R. 1973. A comparison of reading and listening comprehension with the rate of presentation controlled.AV Communication Review 21(3):327–336.
Yule, W. 1973. Differential prognosis of reading backwardness and specific reading retardation.British Journal of Educational Psychology 43:244–248.
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Aaron, P.G. Developmental dyslexia: Is it different from other forms of reading disability?. Annals of Dyslexia 37, 109–125 (1987). https://doi.org/10.1007/BF02648062
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DOI: https://doi.org/10.1007/BF02648062