The Genetics and Environments of Reading: A Behavioral Genetic Perspective

  • Sara A. Hart
  • Stephen A. Petrill

Reading is a complex skill involving the interaction of letter and word recognition, grapheme–phoneme correspondence, deciphering the meaning of a given word and, finally, the understanding of the text in its entirety (Adams, 1990). Learning to read is also a process, one that spans a wide age range, beginning in the home and continuing through formal education. Given the complexity of this construct, it is not surprising that debate continues concerning not only the processes governing the development of reading, but more fundamentally, the etiological factors that influence the development of reading. This chapter reviews the behavioral genetic research on reading in the context of the theoretical debates related to the constructs of reading. Consequently, this chapter is divided into two distinct parts. First, we will describe the current state of the literature on behavioral genetics and reading. Within this section will be a discussion on the etiology of reading ability in general, as well as the sub skills that influence reading. Following this, we will describe the genetic and environmental etiology of the relationships between different reading aspects. We will then examine molecular genetic findings, as well as research describing the impact of measures of the environment within genetically sensitive designs. The second and final section will be a brief examination of future research directions.


Reading Comprehension Phonological Awareness Reading Ability Reading Disability Rapid Automatize Naming 
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  1. Adams, M. J. (1990). Learning to read: Thinking and learning about print. Cambridge, MA: MIT Press.Google Scholar
  2. Bakwin, H. (1973). Reading disability in twins. Developmental Medicine and Child Neurology, 15, 184–187.PubMedGoogle Scholar
  3. Bates, T. C., Castles, A., Coltheart, M., Gillespie, N., Wright, M., & Martin, N. G. (2004). Behaviour genetics analyses of reading and spelling: A component processes approach. Australian Journal of Psychology, 56(2), 115–126.CrossRefGoogle Scholar
  4. Bates, T. C., Castles, A., Luciano, M., Wright, M. J., Coltheart, M., & Martin, N. G. (2007). Genetic and environmental bases of reading and spelling: A unified genetic dual route model. Reading and Writting, 20(1–2), 147–171.Google Scholar
  5. Briggs, C., & Elkind, D. (1977). Characteristics of early readers. Perceptual and Motor Skills, 44, 1231–1237.Google Scholar
  6. Byrne, B., Delaland, C., Fielding-Barnsley, R., Quain, P., Samuelsson, S., Hoien, T., et al. (2002). Longitudinal twin study of early reading development in three countries: Preliminary results. Annals of Dyslexia, 52, 49–73.CrossRefGoogle Scholar
  7. Byrne, B., Wadsworth, S., Corley, R., Samuelsson, S., Quain, P., & DeFries, J. C. (2005). Longitudinal twin study of early literacy development: Preschool and kindergarten phases. Scientific Studies of Reading, 9(3), 219–235.CrossRefGoogle Scholar
  8. Cardon, L. R., Smith, S. D., Fulker, D. W., Kimberling, W. J., Pennington, B. F., & DeFries, J. C. (1994). Quantitative trait locus for reading disability on chromosome 6. Science, 266(5183), 276–279.PubMedCrossRefGoogle Scholar
  9. Castles, A., Bates, T., Coltheart, M., Luciano, M., & Martin, N. G. (2006). Cognitive modeling and behaviour genetics of reading. Journal of Research in Reading, 29(1), 92–103.CrossRefGoogle Scholar
  10. Chall, J. S. (1983). Stages of reading development. New York: McGraw-Hill.Google Scholar
  11. Christian, K., Morrison, F. J., & Bryant, F. B. (1998). Predicting kindergarten academic skills: Interactions among child care, maternal education, and family literacy environments. Early Child Research Quarterly, 13(3), 501–521.CrossRefGoogle Scholar
  12. Conners, F., & Olson, R. K. (1990). Reading comprehension in dyslexic and normal readers: A component-skills analysis. In D. A. Balota, G. B. Flores-d’Arcais, & K. Rayner (Eds.), Comprehension processes in reading (pp. 557–579). Hillsdale, NJ: Erlbaum.Google Scholar
  13. Cope, N., Harold, D., Hill, G., Moskvina, V., Stevenson, J., Holmans, P., et al. (2005). Strong evidence that KIAA0319 on chromosome 6p is a susceptibility gene for developmental dyslexia. American Journal of Human Genetics, 76(4), 581–591.PubMedCrossRefGoogle Scholar
  14. Curtis, M. E. (1980). Development of components of reading skill. Journal of Educational Psychology, 72, 656–669.CrossRefGoogle Scholar
  15. Dale, P. S., & Crain-Thoreson, C. (1999). Language and literacy developmental perspective. Journal of Behavioral Education, 9(1), 23–33.CrossRefGoogle Scholar
  16. Davis, C. J., Knopik, V. S., Olson, R. K., Wadsworth, S. J., & DeFries, J. C. (2001). Genetic and environmental influences on rapid naming and reading ability: A twin study. Annals of Dyslexia, 51, 231–247.CrossRefGoogle Scholar
  17. DeFries, J. C., & Fulker, D. W. (1985). Multiple regression analysis of twin data. Behavior Genetics, 15, 467–473.PubMedCrossRefGoogle Scholar
  18. DeFries, J. C., & Gillis, J. J. (1993). Genetics and reading disability. In R. Plomin & G. E. McClearn (Eds.), Nature, nurture, and psychology (pp. 121–145). Washington, DC: American Psychological Society.CrossRefGoogle Scholar
  19. DeFries, J. C., Plomin, R., Vandenberg, S. G., & Kuse, A. R. (1981). Parent-offspring resemblance for cognitive abilities in the Colorado Adoption Project Biological adoptive and control parents and one year-old children. Intelligence, 5, 245–277.CrossRefGoogle Scholar
  20. DeFries, J. C., Singer, S. M., Foch, T. T., & Lewitter, F. I. (1978). Familial nature of reading disability. British Journal of Psychiatry, 132, 361–367.PubMedCrossRefGoogle Scholar
  21. Denckla, M. B., & Rudel, R. G. (1976). Rapid automatized naming (R.A.N.): Dyslexia differentiated from other learning disabilities. Neuropsychologia, 14, 471–479.PubMedCrossRefGoogle Scholar
  22. Duke, N. K. (2005). Comprehension of what for what: Comprehension as a nonunitary construct. In S. G. Paris & S. A. Stahl (Eds.), Children’s reading: Comprehension and assessment (pp. 93–104). Mahwah, NJ: Lawrence Erlbaum.Google Scholar
  23. Eley, T. C., Lichtenstein, P., & Stevenson, J. (1999). Sex differences in the etiology of aggressive and nonaggressive antisocial behavior: Results from two twin studies. Child Development, 70, 155–168.PubMedCrossRefGoogle Scholar
  24. Falconer, D. S. (1960). Introduction to quantitative genetics. London: Oliver and Boyd London.Google Scholar
  25. Fisher, S. E., & DeFries, J. C. (2002). Developmental dyslexia: Genetic dissection of a complex cognitive trait. Nature Reviews: Neuroscience, 3, 767–780.PubMedCrossRefGoogle Scholar
  26. Foch, T. T., DeFries, J. C., McClearn, G. E., & Singer, S. M. (1977). Familial patterns of impairment in reading disability. Journal of Educational Psychology, 69(4), 316–329.PubMedCrossRefGoogle Scholar
  27. Foorman, B. R., & Ciancio, D. J. (2005). Screening for secondary intervention: Concept and context. Journal of Learning Disabilities, 38(6), 494–499.PubMedCrossRefGoogle Scholar
  28. Foorman, B. R., Schatschneider, C., Eakin, M. N., Fletcher, J. M., Moats, L. C., & Francis, D. J. (2006). The impact of instructional practices in grades 1 and 2 on reading and spelling achievement in high poverty schools. Contemporary Educational Psychology, 31, 1–29.CrossRefGoogle Scholar
  29. Francks, C., Paracchini, S., Smith, S. D., Richardson, A. J., Scerri, T. S., Cardon, L. R., et al. (2004). A 77-kilobase region of chromosome 6p22.2 is associated with dyslexia in families from the United Kingdom and from the United States. American Journal of Human Genetics, 75(6), 1046–1058.PubMedCrossRefGoogle Scholar
  30. Gayàn, J., & Olson, R. K. (2001). Genetic and environmental influences on orthographic and phonological skills in children with reading disabilities. Developmental Neuropsychology, 20(2), 487–511.CrossRefGoogle Scholar
  31. Gayàn, J., & Olson, R. K. (2003). Genetic and environmental influences on individual differences in printed word recognition. Journal of Experimental Child Psychology, 84, 97–123.PubMedCrossRefGoogle Scholar
  32. Gayàn, J., Smith, S. D., Cherny, S. S., Cardon, L. R., Fulker, D. W., Brower, A. M., et al. (1999). Quantitative-trait locus for specific language and reading deficits on chromosome 6p. American Journal of Human Genetics, 118, 27–39.Google Scholar
  33. Griffin, E. A., & Morrison, F. J. (1997). The unique contribution of home literacy environment to differences in early literacy skills. Early Child Development and Care, 127–128, 233–243.CrossRefGoogle Scholar
  34. Grigorenko, E. L. (2005). A conservative meta-analysis of linkage and linkage-association studies of developmental dyslexia. Scientific Studies of Reading, 9(3), 285–316.CrossRefGoogle Scholar
  35. Grigorenko, E. L., Wood, F. B., Meyer, M. S., Pauls, J. E. D., Hart, L. A., Speed, W. C., et al. (1997). Susceptibility loci for distinct components of developmental dyslexia on chromosome 6 and 15. American Journal of Human Genetics, 66, 715–723.CrossRefGoogle Scholar
  36. Harlaar, N., Dale, P. S., & Plomin, R. (2005). Telephone testing and teacher assessment of reading skills in 70 year-olds: II. Strong genetic overlap. Reading and Writing, 18, 401–423.CrossRefGoogle Scholar
  37. Harlaar, N., Hayiou-Thomas, M. E., & Plomin, R. (2005). Reading and general cognitive ability: A multivariate analysis of 7-year-old twins. Scientific Studies of Reading, 9(3), 197–218.CrossRefGoogle Scholar
  38. Harlaar, N., Spinath, F. M., Dale, P. S., & Plomin, R. (2005). Genetic influences on word recognition abilities and disabilities: A study of 7 year old twins. Journal of Child Psychology and Psychiatry and Allied Disciplines, 46(4), 373–384.CrossRefGoogle Scholar
  39. Horn, J. M., Loehlin, J. C., & Willerman, L. (1979). Intellectual resemblance among adoptive and biological relatives: The Texas Adoption Project. Behavior Genetics, 9, 177–207.PubMedCrossRefGoogle Scholar
  40. Kamhi, A. G., & Catts, H. W. (2005). Reading development. In H. W. Catts & A. G. Kamhi (Eds.), Language and reading disabilities (pp. 26–49). Boston: Pearson.Google Scholar
  41. Knopik, V. S., Alarcòn, M., & DeFries, J. C. (1998). Common and specific gender influences on individual differences in reading performance: A twin study. Personality and Individual Differences, 25(2), 269–277.CrossRefGoogle Scholar
  42. Kovas, Y., Hayiou-Thomas, M. E., Oliver, B., Dale, P. S., Bishop, D. V. W., & Plomin, R. (2005). Genetic influences in different aspects of language development: The etiology of language skills in 4.5-year-old twins. Child Development, 76(3), 632–651.PubMedCrossRefGoogle Scholar
  43. Light, J. G., & DeFries, J. C. (1995). Comorbidity of reading and mathematics disabilities: Genetic and environmental etiologies. Journal of Learning Disabilities, 28, 96–106.PubMedCrossRefGoogle Scholar
  44. Light, J. G., DeFries, J. C., & Olson, R. K. (1998). Multivariate behavioral genetic analysis of achievement and cognitive measures in reading-disabled and control twin pairs. Human Biology, 70, 215–237.Google Scholar
  45. Luo, D., Thompson, L. A., & Detterman, D. K. (2003). Phenotypic and behavioral genetic covariation between elemental cognitive components and scholastic measures. Behavior Genetics, 33(3), 221–246.PubMedCrossRefGoogle Scholar
  46. Markwardt, F. C., Jr. (1998). Peabody individual achievement test-Revised/Normative update (PIAT-R/NU) manual. Circle Pines, MN: American Guidance Service.Google Scholar
  47. Matheny, A. P., Jr., Dolan, A. B., & Wilson, R. S. (1976). Twins with academic learning problems: Antecedent characteristics. American Journal of Orthopsychiatry, 46(3), 464–469.PubMedCrossRefGoogle Scholar
  48. Meng, H., Smith, S. D., Hager, K., Held, M., Liu, J., Olson, R. K., et al. (2005). DCDC2 is associated with reading disability and modulates neuronal development in the brain. Proceedings of the National Academy of Sciences of the United States of American, 102(51), 18763.Google Scholar
  49. Moffitt, T. E., Caspi, A., & Rutter, M. (2005). Strategy for investigating interactions between measured genes and measured environments. Archives of General Psychiatry, 62(5), 473–481.PubMedCrossRefGoogle Scholar
  50. National Reading Panel. (2000). Teaching children to read: An evidence-based assessment of the scientific research literature on reading and its implications for reading instruction. (NIH Publication No. 00-4769). Washington, DC: U.S. Government Printing Office.Google Scholar
  51. Olson, R. K., Forsberg, H., & Wise, B. (1994). Genes, environment, and the development of orthographic skills. In V. W. Berninger (Ed.), The varieties of orthographic knowledge 1: Theoretical and developmental issues (pp. 27–71). Dordrecht, The Netherlands: Kluwer Academic Publishers.Google Scholar
  52. Olson, R. K., Gillis, J. J., Rack, J. P., DeFries, J. C., & Fulker, D. W. (1991). Confirmatory factor analysis of word recognition and process measures in the Colorado Reading Project. Reading and Writing, 3, 235–248.CrossRefGoogle Scholar
  53. Pennington, B. F., & Smith, S. D. (1983). Genetic influences on learning disabilities and speech and language disorders. Child Development, 54(2), 369–387.PubMedCrossRefGoogle Scholar
  54. Pennington, B. F., & Smith, S. D. (1988). Genetic influences on learning disabilities: An update. Journal of Consulting and Clinical Psychology, 56(6), 817–823.PubMedCrossRefGoogle Scholar
  55. Petrill, S. A., Deater-Deckard, K., Schatschneider, C., & Davis, C. (2005). Measured environmental influences on early reading: Evidence from an adoption study. Scientific Studies of Reading, 9(3), 237–259.CrossRefGoogle Scholar
  56. Petrill. S. A., Deater-Deckard, K., Thompson, L. A., DeThorne, L. S., & Schatschneider, C. (2006a). Reading skills in early readers: Genetic AND shared environmental influences. Journal of Learning Disabilities, 39(1), 48–55.PubMedCrossRefGoogle Scholar
  57. Petrill. S. A., Deater-Deckard, K., Thompson, L. A., DeThorne, L. S., & Schatschneider, C. (2006b). Genetic and environmental effects of serial naming and phonological awareness on early reading outcomes. Journal of Educational Psychology, 98(1), 112–121.CrossRefPubMedGoogle Scholar
  58. Petrill, S. A., Deater-Deckard, K., Thompson, L., Schatschneider, C., DeThorne, L., & Vandenberg, D. (2007). Longitudinal genetic analysis of early reading: The Western Reserve Reading Project. Reading and Writing, 20(1–2), 127–146.PubMedGoogle Scholar
  59. Plomin, R., & DeFries, J. C. (1983). The Colorado Adoption Project. Child Development, 54(2), 276–289.PubMedCrossRefGoogle Scholar
  60. Plomin, R., DeFries, J. C., & Loehlin, J. (1977). Genotype-environment interaction and correlation in the analysis of human behavior. Psychological Bulletin, 84, 309–322.PubMedCrossRefGoogle Scholar
  61. Plomin, R., DeFries, J. C., McClearn, G. E., & McGuffin, P. (2001). Behavioral Genetics (4th ed.). New York: W. H. Freeman.Google Scholar
  62. Plomin, R., & Kovas, Y. (2005). Generalist genes and learning disabilities. Psychological Bulletin, 131(4), 592–617.PubMedCrossRefGoogle Scholar
  63. Rebello Britto, P. (2001). Family literacy environments and young children’s emerging literacy skills. Reading Research Quarterly, 36(4), 346–347.Google Scholar
  64. Rowe, D. C., Jacobson, K. C., & Van den Oord, E. J. C. G. (1999). Genetic and environmental influences on vocabulary IQ: Parent education as moderator. Child Development, 70(5), 1151–1162.PubMedCrossRefGoogle Scholar
  65. Samuelsson, S., Byrne, B., Quain, P., Wadsworth, S., Corley, R., DeFries, J. C., et al. (2005). Environmental and genetic influences on prereading skills in Australia, Scandinavia, and the United States. Journal of Educational Psychology, 97(4), 705–722.CrossRefGoogle Scholar
  66. Scarr, S. (1971). Race, social class, and IQ. Science, 174(4016), 1285–1295.CrossRefGoogle Scholar
  67. Schatschneider, C., Francis, D. J., Foorman, B. R., Fletcher, J. M., & Mehta, P. (1999). The dimensionality of phonological awareness: An application of item response theory. Journal of Educational Psychology, 91(3), 439–449.CrossRefGoogle Scholar
  68. Smith, S. D., Kimberling, W. J., Pennington, B. F., & Lubs, H. A. (1983, March 18). Specific reading disability: Identification of an inherited form through linkage analysis. Science, 219, 1345–1347.PubMedCrossRefGoogle Scholar
  69. Snow, C. E., Burns, M. S., & Griffin, P. (1998). Preventing reading difficulties in young children. Washington, DC: National Academy Press.Google Scholar
  70. Stevenson, J., Graham, P., Fredman, G., & McLoughlin, V. (1987). A twin study of genetic influences on reading and spelling ability and disability. Journal of Child Psychology and Psychiatry, 28(2), 229–247.PubMedCrossRefGoogle Scholar
  71. Stevenson, H. W., & Lee, S. Y. (1990). Contexts of achievement. Monographs of the Society for Research in Child Development, 55(3–4), Serial #221.Google Scholar
  72. Swanson, H. L., Trainin, G., Necoechea, D. M., & Hammill, D. D. (2003). Rapid naming, phonological awareness, and reading: A meta-analysis of the correlation evidence. Review of Educational Research, 73(4), 407–440.CrossRefGoogle Scholar
  73. Sweet, A. P. (2005). Assessment of reading comprehension: The RAND reading study group vision. In S. G. Paris & S. A. Stahl (Eds.), Children’s reading: Comprehension and assessment (pp. 3–12). Mahwah, NJ: Lawrence Erlbaum.Google Scholar
  74. Taylor, D. (1983). Family literacy: Young children learning to read and write. Exeter, NH: Heineman.Google Scholar
  75. Teale, W. H., & Sulzby, E. (Eds.). (1986). Emergent literacy: Writing and reading. Norwood, NJ: Ablex.Google Scholar
  76. Thompson, M. S., Alexander, K. L., & Entwisle, D. R. (1988). Household composition, parental expectations, and school environment. Social Forces, 67(2), 424–451.CrossRefGoogle Scholar
  77. Thompson, L. A., Detterman, D. K., & Plomin, R. (1991). Associations between cognitive abilities and scholastic achievement: Genetic overlap but environmental differences. Psychological Science, 2(3), 158–165.CrossRefGoogle Scholar
  78. Torgesen, J. K., Wagner, R. K., Rashotte, C. A., Burgess, S., & Hecht, S. (1997). Contributions of phonological awareness and rapid autonomic naming to the growth of word-reading skills in second grade to fifth-grade children. Scientific Studies of Reading, 1, 161–155.CrossRefGoogle Scholar
  79. Trouton, A., Spinath, F. M., & Plomin, R. (2002). Twins’ Early Development Study (TEDS): A multivariate, longitudinal genetic investigation of language, cognition and behaviour problems in childhood. Twin Research, 5, 444–448.PubMedCrossRefGoogle Scholar
  80. Turkheimer, E., Haley, A., Waldron, M., D’Onofrio, B., & Gottesman, I. I. (2003). Socioeconomic status modifies heritability of IQ in young children Psychological Science, 14(6), 623–628.PubMedCrossRefGoogle Scholar
  81. Wadsworth, S. J., Corley, R. P., Hewitt, J. K., & DeFries, J. C. (2001). Stability of genetic and environmental influences on reading performance at 7, 12, and 16 years of age in the Colorado Adoption Project. Behavior Genetics, 31(4), 353–359.PubMedCrossRefGoogle Scholar
  82. Whitehurst, G. J., Falco, F., Lonigan, C. J., Fischel, J. E., DeBaryshe, B. D., Valdez-Menchaca, M. C., et al. (1988). Accelerating language development through picture-book reading. Developmental Psychology, 24, 552–558.CrossRefGoogle Scholar
  83. Whitehurst, G. J., & Lonigan, C. J. (1998). Child development and emergent literacy. Child Development, 69(3), 848–872.PubMedGoogle Scholar
  84. Wolf, M., & Bowers, P. G. (1999). The double-deficit hypothesis for the development dyslexics. Journal of Educational Psychology, 91, 415–438.CrossRefGoogle Scholar
  85. Wolf, M., Bowers, P. G., & Biddle, K. (2000). Naming-speed processes, timing, and reading: A conceptual review. Journal of Learning Disabilities, 33(4), 387–407.PubMedCrossRefGoogle Scholar
  86. Zerbin-Rüdin, E. (1967). Congenital word-blindness. Bulletin of the Orton Society, 17, 47–56.CrossRefGoogle Scholar

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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of Human Development and Family ScienceOhio State UniversityColumbusUSA

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