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The second deficit: An investigation of the independence of phonological and naming-speed deficits in developmental dyslexia

Abstract

An increasing body of dyslexia researchdemonstrates, in addition to phonologicaldeficits, a second core deficit in theprocesses underlying naming speed. Thehypothesized independence of phonologicalawareness and naming-speed variables inpredicting variance in three aspects of readingperformance was studied in a group of 144severely-impaired readers in Grades 2 and 3. Stepwise regression analyses were conducted onthese variables, controlling for the effects ofSES, age, and IQ. Results indicated thatphonological measures contribute more of thevariance to those aspects of reading skill thatinvolve decoding or word attack skills;naming-speed measures contribute more to skillsinvolved in word identification. Subtypeclassification findings were equally supportiveof the independence of the two deficits: 19%of the sample had single phonological deficits;15% had single naming-speed deficits; 60% had double-deficits; and 6% could not be classified. The implications of these findingsfor diagnosis and intervention are discussed.

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References

  • Ackerman, P.T. & Dykman, R.A. (1993). Phonological processes, confrontation naming, and immediate memory in dyslexia, Journal of Learning Disabilities 26: 597-609.

    Google Scholar 

  • Ackerman, P.T. & Dykman, R.A. (1995). The speed factor and learning disabilities: The toll of slowness in adolescents. Unpublished manuscript.

  • Adams, M.J. (1990). Beginning to read: Thinking and learning about print. Cambridge, MA: MIT Press.

    Google Scholar 

  • Badian, N. (1995). Predicting reading ability over the long-term: The changing roles of letter naming, phonological awareness and orthographic processing, Annals of Dyslexia: An Interdisciplinary Journal 45: 79-86.

    Google Scholar 

  • Badian, N. (1996a). Dyslexia: Does it exist? Dyslexia, garden-variety poor reading and the double-deficit hypothesis. Paper presented at Orton Dyslexia Society. Boston, MA.

  • Badian, N. (1996b). Dyslexia: A validation of the concept at two age levels, Journal of Learning Disabilities 29: 102-112.

    Google Scholar 

  • Berninger, V., Cartwright, A., Yates, C., Swanson, H.L. & Abbott, R. (1994). Developmental skills related to writing and reading acquisition in the intermediate grades: Shared and unique variance, Reading and Writing: An Interdisciplinary Journal 6: 161-196.

    Google Scholar 

  • Biddle, K.R. (1996). The development of visual naming speed and verbal fluency in average and impaired readers: The implications for assessment intervention and theory. Unpublished doctoral dissertation. Tufts University, Boston, MA.

    Google Scholar 

  • Blachman, B.A. (1984). Relationship of rapid naming ability and language analysis skills to kindergarten and first-grade reading achievement, Journal of Educational Psychology 76: 610-622.

    Google Scholar 

  • Bowers, P.O., Golden, J., Kennedy, A. & Young, A. (1994). Limits upon orthographic knowledge due to processes indexed by naming speed. In: V.W. Berninger (ed.), The varieties of orthographic knowledge, Vol. I: Theoretical and developmental issues (pp. 173-218). Dordrecht/Boston/London: Kluwer Academic Publishers.

    Google Scholar 

  • Bowers, P.O., Stefty, R. & Tate, B. (1988). Comparison of the effects of IQ control methods on memory and naming speed predictors of reading disability, Reading Research Quarterly 23: 304-309.

    Google Scholar 

  • Bowers, P.O. & Swanson, L.B. (1991). Naming speed deficits in reading disability: Multiple measures of a singular process, Journal of Experimental Child Psychology 51: 195-219.

    Google Scholar 

  • Bowers, P.O. & Wolf M. (1993). Theoretical links among naming speed, precise timing mechanisms and orthographic skill in dyslexia, Reading and Writing: An Interdisciplinary Journal 5: 69-85.

    Google Scholar 

  • Bradley, L. & Bryant, P.E. (1983). Categorizing sounds and learning to read: A causal connection, Nature 301: 419-421.

    Google Scholar 

  • Brady, S. & Shankweiler, D. (eds.) (1991). Phonological processes in literacy: A tribute to Isabelle Y. Liberman. Hillsdale, NJ: Erlbaum.

    Google Scholar 

  • Breznitz, Z. (1996). Perceptual deficits among developmental dyslexics. Unpublished manuscript.

  • Breznitz, Z. (1997). Enhancing the reading of dyslexics by reading acceleration and auditory masking, Journal of Educational Psychology 89: 103-113.

    Google Scholar 

  • Bruck, M. & Treiman, R. (1990). Phonological awareness and spelling in normal children and dyslexics: The case of initial consonant clusters, Journal of Experimental Child Psychology 50(1): 156-178.

    Google Scholar 

  • Byrne, B. (1998). The foundations of literacy. East Sussex, UK: Psychology Press.

    Google Scholar 

  • Carver, R.P. (1991). Using letter naming speed to diagnose reading disability, RASE-Remedial and Special Education 12: 33-43.

    Google Scholar 

  • Carver, R.P. (1997). Reading for one second, one minute, or one year from the perspective of reading theory, Journal for the Scientific Study of Reading 1: 4-44.

    Google Scholar 

  • Cattell, M. (1886). The time it takes to see and name objects, Mind 2: 63-85.

    Google Scholar 

  • Catts, H.W. (1996). Defining dyslexia as a developmental language disorder: An expanded view, Topics in Language Disorders 16(2): 14-29.

    Google Scholar 

  • Chall, J.S. (1983). Stages of reading development. New York: McGraw-Hill.

    Google Scholar 

  • Cornwall, A. (1992). The relationship of phonological awareness, rapid naming, and verbal memory to severe reading and spelling disability, Journal of Learning Disability 25: 532-538.

    Google Scholar 

  • Denckla, M.B. (1972). Color-naming defects in dyslexic boys, Cortex 8: 164-176.

    Google Scholar 

  • Denckla, M.B. & Rudel, R.O. (1974). 'Rapid automatized naming' of pictured objects, colors, letters, and numbers by normal children, Cortex 10: 186-202.

    Google Scholar 

  • Denckla, M.B. & Rudel, R.G. (1976a). Naming of objects by dyslexic and other learningdisabled children, Brain and Language 3: 1-15.

    Google Scholar 

  • Denckla, M.B. & Rudel, R.G. (1976b). Rapid automatized naming (R.A.N.): Dyslexia differentiated from other learning disabilities, Neuronsychologia 14: 471-479.

    Google Scholar 

  • Doehring, D. (1976). Acquisition of rapid reading responses, Monographs of the Society for Research in Child Development 41(2).

  • Farmer, M.E. & Klein, R.M. (1995). The evidence for a temporal processing deficit linked to dyslexia: A review, Psychonomic Society 2: 460-493.

    Google Scholar 

  • Felton, R.H. & Wood, F. (1992). Cognitive deficits in reading deficits in reading disability and attention deficit disorder, Journal of Learning Disabilities 22: 3-13.

    Google Scholar 

  • Felton, R.H., Wood, F.B., Brown, I.S. & Campbell, S.K. (1987). Separate verbal memory and naming deficits in attention deficit disorder and reading disability, Brain and Language 31: 171-184.

    Google Scholar 

  • Fletcher, J.M., Shaywitz, S.E., Shankweiler, D.P., Katz, L., Liberman, LY., Stuebing, K.K., Fowler, A., Francis, D.J. & Shaywitz, B.A. (1994). Cognitive profiles of reading disability: Comparisons of discrepancy and low achievement definitions, Journal of Educational Psychology 85: 1-18.

    Google Scholar 

  • Foorman, B. (1994). Phonological and orthographic processing: Separate but equal? In: V. Berninger (ed.), The varieties of orthographic knowledge (pp. 321-358). Dordrecht/Boston/London: K1uwer Academic Publishers.

    Google Scholar 

  • Foorman, B., Francis, D., Shaywitz, S., Shaywitz, B. & Fletcher, J. (1997). The case for early reading intervention. In: B. Blachman (ed.), Foundations of reading acquisition (pp. 243-264). Mahwah, NJ: Erlbaum.

    Google Scholar 

  • Geschwind, N. (1965). Disconnection syndrome in animals and man (Parts I, II). Brain 88: 237-294, 585-644.

    Google Scholar 

  • Gidney, C., Deeney, T., Wolf, M., Holmes, J., Cirino, P. & Morris, R. (1998). The presence of phonological and naming-speed deficits in Africa-American children. Poster presented at the Conference on Language Development in African-American Children. Memphis, TN.

  • Goldberg, A., Wolf, M., Cirino, P., Morris, R. & Lovett, M. (1998). A test of the 'Double Deficit Hypothesis'. Paper presented at the meeting of the Society for the Scientific Study of Reading. San Diego, CA.

  • Gough, P. & Tunmer, W. (1986). Decoding, reading, and reading disability, Remedial and Special Education 7: 6-10.

    Google Scholar 

  • Grigorenko, E., Wood, F., Meyer, M., Hart, L., Speed, W., Shuster, A. & Pauls, D. (1997). Susceptibility loci for distinct components of developmental dyslexia on chromosomes 6 and 15, American Journal of Human Genetics 60: 27-39.

    Google Scholar 

  • Huey, B. (1908). The psychology and pedagogy of reading. Cambridge: MIT Press.

    Google Scholar 

  • Hurford, D.P., Johnston, M., Nepote, P., Hampton, S., Moore, S., Neal, J., Mueller, A., McGeorge, K., Huff., L., Awad, A., Tarto, C., Juliano, C. & Huffman, D. (1994). Early identification and remediation of phonological-processing deficits in first-grade children at risk for reading disabilities, Journal of Learning Disabilities 27: 647-659.

    Google Scholar 

  • Kamhi, A. & Catts, H. (1989). Reading disabilities: A developmental language perspective. Austin, TX: Pro-ed.

    Google Scholar 

  • Kaufman, A. & Kaufman, N. (1990). Kaufman Brief Intelligence Test. Circle Pines, MN: American Guidance Service.

    Google Scholar 

  • Korhonen, T. (1995). The persistence of rapid naming problems in children with reading disabilities: A nine-year follow-up, Journal of Learning Disabilities 28: 232-239.

    Google Scholar 

  • Lovett, M.W. (1992). Developmental dyslexia. In: F. Boller & J. Grafman (eds.), Handbook of Neuropsychology, Vol. 7 (pp. 163-185). Amsterdam: Elsevier.

    Google Scholar 

  • Lovett, M.W., Borden, S., DeLuca, T., Lacerenza, L., Benson, N. & Brackstone, D. (1994). Treating the core deficits of developmental dyslexia: Evidence of transfer of learning after phonologically and strategy-based reading training programs, Developmental Psychology 30: 805-822.

    Google Scholar 

  • Lovett, M., Steinbach, K. & Frijters, J. (2000). Remediating the core deficits of developmental reading disability: A double-deficit perspective, Journal of Learning Disabilities 33: 334-358.

    Google Scholar 

  • Lyon, G.R. (1995). Toward a definition of dyslexia, Annals of Dyslexia: An Interdisciplinary Journal 45: 3-27.

    Google Scholar 

  • Lyon, G.R. & Moats, L.C. (1997). Critical conceptual and methodological considerations in reading intervention research, Journal of Learning Disabilities 30: 578-588.

    Google Scholar 

  • Manis, F. & Doi, L. (1995). Word naming speed, phonological coding and orthographic knowledge in dyslexic and normal readers. Symposium paper presented at the Society for Research in Child Development. Indianapolis, IN.

  • Manis, F., Doi, L. & Bhadha, B. (2000). Naming speed, phonological awareness and orthographic knowledge in second graders, Journal of Learning Disabilities 33: 325-333, 374.

    Google Scholar 

  • Martinussen, R., Frijters, J. & Tannock, R. (1998). Naming speed and stimulant effects in inattention-deficit/hyperactivity disorder. Paper presented at American Academy of Child and Adolescent Psychiatry. Anaheim, CA.

  • McBride-Chang, C. & Manis, F. (1996). Structural invariance in the associations of naming speed, phonological awareness, and verbal reasoning in good and poor readers: A test of the double deficit hypothesis, Reading and Writing: An Interdisciplinary Journal 8: 323-339.

    Google Scholar 

  • Merzenich, M.M., Jenkins, W.M., Johnston, P., Schreiner, C., Miller, S. & Tallal, P. (1996). Temporal processing deficits of language-learning impaired children ameliorated by training, Science 271: 77-80.

    Google Scholar 

  • Meyer, M.S., Wood, F.B., Hart, L.A. & Felton, R.H. (1998). The selective predictive values in rapid automatized naming within poor readers, Journal of Learning Disabilities 31: 106-117.

    Google Scholar 

  • Morris, R., Stuebing, K., Fletcher, J., Shaywitz, S., Lyon, R., Shankweiler, D., Katz, L., Francis, D. & Shaywitz, B. (1998). Subtypes of reading disability: A phonological core with cognitive variability, Journal of Educational Psychology 90: 1-27.

    Google Scholar 

  • Näslund, J.C. & Schneider,W. (1991). Longitudinal effects of verbal ability, memory capacity, and phonological awareness on reading performance, European Journal of Psychology of Education 4: 375-392.

    Google Scholar 

  • Nicolson, R.I. & Fawcett, A.J. (1994). Reaction times and dyslexia, Quarterly Journal of Experimental Psychology 47: 29-48.

    Google Scholar 

  • Novoa, L. (1988). Word-retrieval process and reading acquisition and development in bilingual and monolingual children. Unpublished doctoral dissertation. Harvard University, Cambridge, MA.

    Google Scholar 

  • Novoa, L. & Wolf, M. (1984). Word-retrieval and reading in bilingual children. Paper presented at Boston University Language Conference, Boston, MA.

  • Ojemann, G.A. (1984). Common conical and thalamic mechanisms for language and motor functions, American Journal of Physiology 246: 901-903.

    Google Scholar 

  • Olson, R.K. (1995). Language deficits in 'specific' reading disability. In: M. Gernsbacher (ed.), Handbook of psycholinguistics. San Diego, CA: Academic Press.

    Google Scholar 

  • Olson, R.K., Wise, B., Connors, F., Rack, J.P. & Fulker, D. (1989). Specific deficits in component reading and language skills: Genetic and environmental influences, Journal of Learning Disabilities 22: 339-348.

    Google Scholar 

  • Perfetti, C.A. (1985). Reading ability. New York: Oxford Press.

    Google Scholar 

  • Perfetti, C.A., Finger, B. & Hogaboam, T. (1978). Sources of vocalization latency differences between skilled and less skilled young readers, Journal of Educational Psychology 70: 730-739.

    Google Scholar 

  • Rutter, M. & Yule, W. (1975). The concept of specific reading retardation, Journal of Child Psychology and Psychiatry 16: 181-197.

    Google Scholar 

  • Sankaranarayanan, A. (1998). Cognitive profiles of youngchildren: A comparison of good and poor readers. Unpublished doctoral dissertation. Harvard University, Cambridge, MA.

    Google Scholar 

  • Scarborough, H.S. & Domgaard, R.M. (1998). An exploration of the relationship between reading and rapid serial naming. Poster presented at meeting of Society for Scientific Study of Reading. San Diego, CA.

  • Segal, D. & Wolf, M. (1993). Automaticity, word retrieval, and vocabulary development in children with reading disabilities. In: L. Meltzer (ed.), Cognitive, linguistic, and developmental perspectives on learning disorders (pp. 141-165). Boston: Little & Brown.

    Google Scholar 

  • Shankweiler, D. & Liberman, I.Y. (1972). Misreading: A search for causes. In: J.F. Kavanagh & I.G.Mattingly (eds.), Language by ear and by eye (pp. 293-317). Cambridge,MA: MIT Press.

    Google Scholar 

  • Shaywitz, S., Shaywitz, B., Pugh, K., Fulbright, R., Constable, R.T., Menel, W.E., Shankweiler, D., Liberman, A., Skudlarski, P., Fletcher, J., Katz, L., Marchione, K., Lacadie, C., Gatenby, C. & Gore, J. (1998). Functional disruption in the organization of the brain for reading in dyslexia, Neurobiology 95: 2636-2641.

    Google Scholar 

  • Siegel, L.S. & Ryan, E.B. (1988). Development of grammatical-sensitivity, phonological, and short-tern memory skills in normally achieving and learning disabled children, Developmental Psychology 24: 28-37.

    Google Scholar 

  • Snyder, L. & Downey, D. (1995). Serial rapid naming skills in children with reading disabilities, Annals of Dyslexia 45: 31-50.

    Google Scholar 

  • Spring, C. & Capps, C. (1974). Encoding speed, rehearsal, and probed recall of dyslexic boys, Journal of Educational Psychology 66: 780-786.

    Google Scholar 

  • Spring, C. & Davis, J. (1988). Relations of digit naming speed with three components of reading, Applied Psycholinguistics 9: 315-334.

    Google Scholar 

  • Stanovich, K. (1986). 'Matthew effects' in reading: Some consequences of individual differences in acquisition of literacy, Reading Research Quarterly 4: 360-407.

    Google Scholar 

  • Stanovich, K.E. (1992). Speculations on the causes and consequences of individual differences in early reading acquisition. In: P.B. Gough, L.C. Ehri & R. Treiman (eds.), Reading acquisition (pp. 307-342). Hillsdale, NJ: Erlbaum.

    Google Scholar 

  • Stanovich, K.E. & Siegel, L.S. (1994). Phenotypic performance profile of children with reading disabilities: A regression-based test of the phonological-core variable difference model, Journal of Educational Psychology 86(1): 24-53.

    Google Scholar 

  • Tallal, P., Miller, S.L., Bedi, G., Byma, G., Wang, X., Nagarajan, S., Schreiner, C., Jenkins, W. & Merzenich, M. (1996). Language comprehension in language-learning impaired children improved with acoustically modified speech, Science 271: 81-84.

    Google Scholar 

  • Torgesen, J.K., Wagner, R.K. & Rashotte, C.A. (1994). Longitudinal studies of phonological processing and reading, Journal of Learning Disabilities 27: 276-286.

    Google Scholar 

  • Torgesen, J.K., Wagner, R.K., Rashotte, C.A., Burgess, S. & Hecht, S. (1997). Contributions of phonological awareness and rapid automatic naming ability to the growth of word-reading skills in second-to fifth-grade children, Scientific Studies of Reading 1: 161-185.

    Google Scholar 

  • Tunmer, W. (1995). Intervention strategies for developing onset-rime sensitivity and analogical transfer in reading disabled children. Paper presented at the Extraordinary Brain III Conference. Kauai, Hawaii.

  • Van den Bos, K. (1998). IQ, phonological awareness, and continuous-naming speed related to Dutch children's poor decoding performance on two word identification tests, Dyslexia 4: 73-89.

    Google Scholar 

  • Vellutino, F. & Scanlon, P. (1987). Phonological coding, phonological awareness, and reading ability: Evidence from a longitudinal and experimental study, Merrill Palmer Quarterly 33: 321-363.

    Google Scholar 

  • Wagner, R.K., Torgesen, J.K. & Rashotte, C.A. (1994). The development of reading-related phonological processing abilities: New evidence of bi-directional causality from a latent variable longitudinal study, Developmental Psychology 30: 73-87.

    Google Scholar 

  • Wagner, R.K., Torgesen, J.K. & Rashotte, C.A. (1999). Comprehensive test of phonological processing. Austin, TX: ProEd.

    Google Scholar 

  • Wilkinson, H. (1993). Wide range achievement test: Administration manual. Wilmington, DE: Jastak.

    Google Scholar 

  • Wimmer, H. (1993). Characteristics of developmental dyslexia in a regular writing system, Applied Psycholinguistics 14: 1-34.

    Google Scholar 

  • Wimmer, H. & Hummer, P. (1990). How German-speaking first graders read and spell: Doubts on the importance of the logographic stage, Applied Psycholinguistics 11: 349-368.

    Google Scholar 

  • Wolf, M. (1979). The relationship of disorders of word-finding and reading in children and aphasics. Unpublished doctoral dissertation. Harvard University, Cambridge, MA.

    Google Scholar 

  • Wolf, M. (1982). The word-retrieval process and reading in children and aphasics. In: K. Nelson (ed.), Children's language (pp. 437-493). Hillsdale, NJ: Erlbaum.

    Google Scholar 

  • Wolf,M. (1991). Naming speed and reading: The contribution of the cognitive neurosciences, Reading Research Quarterly 26: 123-141.

    Google Scholar 

  • Wolf, M. (1997). A provisional, integrative account of phonological and naming-speed deficits in dyslexia: Implications for diagnosis and intervention. In: B. Blachman (ed.), Foundations of reading acquisition (pp. 67-92). Mahwah, NJ: Erlbaum.

    Google Scholar 

  • Wolf, M., Bally, H. & Morris, R. (1986). Automaticity, retrieval processes, and reading: A longitudinal study in average and impaired readers, Child Development 57: 988-1000.

    Google Scholar 

  • Wolf, M. & Bowers, P. (1999). The question of naming-speed deficits in developmental reading disabilities: An introduction to the double-deficit hypothesis, Journal of Educational Psychology 19: 1-24.

    Google Scholar 

  • Wolf, M., Bowers, P. & Biddle, K. (2000). Naming-speed processes, timing, and reading: A conceptual review, Journal of Learning Disabilities 33: 387-407.

    Google Scholar 

  • Wolf, M. & Goodglass (1986). Dyslexia, dysnomia, and lexical retrieval, Brain and Language 28: 154-168.

    Google Scholar 

  • Wolf, M. & Goodman, G. (1996). Speed wizards. Computerized reading program. Tufts University and Rochester Institute of Technology.

  • Wolf, M. & Miller, L. (1997). The Retrieval, Automaticity, Vocabulary Elaboration-Orthography (RAVE-O) reading intervention manual. An unpublished manual for NICHD grant No. 1R55HD/0D30970-O1A1.

  • Wolf, M., Miller, L. & Donnelly, K. (2000). Retrieval, Automaticity, Vocabulary Elaboration-Orthography (RAVE-O): A comprehensive, fluency-based reading intervention program, Journal of Learning Disabilities 33: 375-386.

    Google Scholar 

  • Wolf, M. & Obregó n, M. (1992). Early naming deficits, developmental dyslexia, and a specific deficit hypothesis, Brain and Language 42: 219-247.

    Google Scholar 

  • Wolf, M., Pfeil, C., Lotz, R. & Biddle, K. (1994). Towards a more universal understanding of the developmental dyslexias: The contribution of orthographic factors. In: V.W. Berninger (ed.), The varieties of orthographic knowledge, Vol. I: Theoretical and developmental issues (pp. 137-171). Dordrecht/Boston/London: Kluwer Academic Publishers.

    Google Scholar 

  • Wolf, M. & Segal, D. (1999). Retrieval-rate, Accuracy, and Vocabulary Elaboration (RAVE) in reading-impaired children: A pilot intervention program, Dyslexia: An International Journal of Theory and Practice 5: 1-27.

    Google Scholar 

  • Wolff, P., Michel, C. & Ovrut, M. (1990a). Rate variables and automatized naming in developmental dyslexia, Brain and Language 39: 556-575.

    Google Scholar 

  • Wolff, P., Michel, C. & Ovrut, M. (1990b). The timing of syllable repetitions in developmental dyslexia, Journal of Speech and Hearing Research 33: 281-289.

    Google Scholar 

  • Wood, F.B. & Felton, RH. (1994). Separate linguistic and developmental factors in the development of reading, Topics in Language Disorders 14: 42-57.

    Google Scholar 

  • Woodcock, R.W. (1987). Woodcock Reading Mastery-Tests-Revised: Examiner's manual. Circle Pines, MN: American Guidance Service, Inc.

    Google Scholar 

  • Yap, R. & van der Leij, A. (1993). Word processing in dyslexics: An automatic decoding deficit?, Reading and Writing: An Interdisciplinary Journal 5: 261-279.

    Google Scholar 

  • Yap, R.L. & van der Leij, A. (1994). Testing the automatization deficit hypothesis of dyslexia via a dual-task paradigm, Journal of Learning Disabilities 27: 660-665.

    Google Scholar 

  • Young, A. & Bowers, P.G. (1995). Individual difference and text difficulty determinants of reading fluency and expressiveness, Journal of Experimental Child Psychology 60: 428-454.

    Google Scholar 

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Wolf, M., O'Rourke, A.G., Gidney, C. et al. The second deficit: An investigation of the independence of phonological and naming-speed deficits in developmental dyslexia. Reading and Writing 15, 43–72 (2002). https://doi.org/10.1023/A:1013816320290

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  • DOI: https://doi.org/10.1023/A:1013816320290

  • Dyslexia
  • Naming speed
  • Phonology
  • Reading
  • Reading disability