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Genetic and Environmental Influences on Reading Achievement: A Study of First- and Second-Grade Twin Children

Published online by Cambridge University Press:  01 August 2014

Emily Louann Harris
Emily Louann Harris*
Affiliation:
Department of Psychiatry, University of Iowa, Iowa City
*
Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261

Abstract

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Previous twin studies provide evidence for genetic contributions to individual differences in reading achievement, but the nature of those genetic effects is uncertain. Reading is a complex behavior composed of many lower-level skills including attention, memory, learning ability, and the integration of auditory and visual information; genetic influences may exert their effects through these lower-level skills. This study evaluated the relationship between auditory-visual integration (AVI) and reading achievement and assessed genetic variance in AVI and reading achievement using the conventional twin model (comparison of identical twins with fraternal twins).

The final sample consisted of 109 first- and second-grade volunteer twin pairs. Of the 89 same-sexed pairs, 57 pairs were classified as monozygotic, 31 pairs as dizygotic, and one remained unclassified; zygosity determination included examination of the intrapair similarity of genetic markers, dermatoglyphics, and/or physical appearance. The childrens' test battery included reading achievement tests (Woodcock Reading Mastery Tests) and the AVI task as well as estimates of general intellectual ability (Vocabulary and Block Design tests from the Wechsler Intelligence Scale for Children-Revised), auditory memory (Auditory Sequential Memory subtest of the Illinois Test of Psycholinguistic Abilities), comparison of auditory patterns, and comparison of visual-spatial patterns. Although the presence of heritable variation in reading achievement has been reported previously [22, 23, 30, 34, 50, 57], it does not account for all of the reliable variance; accordingly, two family questionnaires (Attitudes Toward Education and Moos' Family Environment Scale) and one dealing with first-grade method(s) of reading instruction were included to assess possible environmental factors.

The most unique aspects of this study were the young age of the children studied and the twin analyses of the auditory-visual integration test battery. Evidence for heritable variation in reading achievement was found in this young sample consistent with the results of studies using older children. The main thrust of this project was to investigate possible “lower-level” sources of this heritable variation, particularly auditory-visual integration. As a first step, it was necessary to establish the presence of a significant relationship between reading achievement and auditory-visual integration, independent of general intellectual ability. The partial correlations between the reading achievement measures and AVI (WISC-R test scores partialled out) ranged from 0.10 to 0.49 and were generally significant. Factor analysis of the children's test battery supported the idea that the integration aspect of the AVI task (auditory-visual and/or spatial-temporal) was the aspect of this skill related to reading achievement rather than auditory memory or visual-spatial ability, which also contribute to success on the AVI task. Twin analyses of the AVI task revealed evidence of the presence of heritable variation. However, the task relates to other skills exhibiting genetic variance, and it could not be determined whether aspects of the AVI task independently related to reading achievement were the sources of the heritable variation observed.

Although this study emphasized genetic relationships, environmental contributions to variation in reading achievement were also considered in a preliminary fashion. Family environmental data suggested that exposure to and emphasis on intellectual and cultural activities promote reading achievement.

In conclusion, a positive and significant relationship between reading achievement and auditory-visual integration, independent of general intellectual ability, was established for a first- and second-grade sample. One environmental variable, intellectual-cultural orientation of the family, was also related to reading achievement. Evidence indicative of the presence of genetic variance was presented for reading achievement, as previously reported in older twin samples, and for auditory-visual integration.

Keywords

Reading achievementAuditory-visual integrationIntellectual abilityAuditory memoryWoodcock Reading Mastery TestsWechsler Intelligence Scale for Children-RevisedIllinois Test of Psycholinguistic AbilitiesFamily Environment ScaleParental Attitudes Toward Education QuestionnaireGenetic influencesEnvironmental influencesTwins
Type
Dissertations
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 31 , Issue 1-2 , January 1982 , pp. 64 - 116
Copyright
Copyright © The International Society for Twin Studies 1982

References

REFERENCES

1. Badian, NA (1974): Auditory-visual integration, auditory memory and reading behavior. EdD dissertation, Boston University School of Education.Google Scholar
2. Badian, NA (1977): Auditory-visual integration, auditory memory, and reading in retarded and adequate readers. J Learn Disabil 10:108–114.Google Scholar
3. Barker, BM (1976): Interrelationships of perceptual modality, short-term memory and reading achievement. Percept Mot Skills 43:771–774.Google Scholar
4. Birch, HG (1962): Dyslexia and the maturation of visual function. In Money, J (ed): “Reading Disability: Progress and Research Needs in Dyslexia” Baltimore: Johns Hopkins Press.Google Scholar
5. Birch, HG, Belmont, L (1964): Auditory-visual integration in normal and retarded readers. Am J Orthopsychiatry 34:852–861.CrossRefGoogle Scholar
6. Birch, HG, Belmont, L (1965): Auditory-visual integration, intelligence and reading ability in school children. Percept Mot Skills 20:295–305.Google Scholar
7. Blank, M, Bridger, WH (1966): Perceptual abilities and conceptual deficiencies in retarded readers. Proc Am Psychopathol Assoc 56:401–412.Google Scholar
8. Blankman, LS, Burger, AL (1972): Psychological factors related to early reading behavior of EMR and nonretarded children. Am J Ment Defic 77:212–229.Google Scholar
9. Block, J (1968): Hereditary components in the performance of twins on the WAIS. In Vandenberg, SG (ed): “Progress in Human Behavior Genetics” Baltimore: The Johns Hopkins Press.Google Scholar
10. Bryan, QR (1964): Relative importance of intelligence and visual perception in predicting reading achievement. Calif J Educ Res 15:44–48.Google Scholar
11. Bryant, PE (1975): Cross-modal development and reading. In Duane, D, Rawson, MB (eds): “Reading, Perception and Language.” Baltimore: York Press, Inc.Google Scholar
12. Burns, PC, Roe, BD (1976): “Teaching Reading in Today's Elementary Schools.” Chicago: Rand McNally College Publishing Company.Google Scholar
13. Calfee, RC (1975): Memory and cognitive skills in reading acquisition. In Duane, DD, Rawson, MB (eds): “Reading, Perception and Language.” Baltimore: York Press, Inc.Google Scholar
14. Christian, JC, Kang, KW, Norton, JA Jr (1974): Choice of an estimate of genetic variance from twin data. Am J Hum Genet 26:154–161.Google Scholar
15. Christian, JC, Feinleib, M, Norton, JA Jr (1975): Statistical analysis of genetic variance in twins. Am J Hum Genet 27:807.Google Scholar
16. Christian, JC, Norton, JA Jr (1977): A proposed test of the difference between the means of monozygotic and dizygotic twins. Acta Genet Med Gemellol 26:49–53.Google Scholar
17. Cooley, WW, Lohnes, PR (1971): “Multivariate Data Analysis” New York: John Wiley & Sons, Inc.Google Scholar
18. DeFries, JC, Singer, SM, Foch, TT, Lewitter, FI (1978): Familial nature of reading disability. Br J Psychiatry 132:361–367.Google Scholar
19. Doehring, DG (1968): “Patterns of Impairment in Specific Reading Disability.” Indiana University Publications: Science Series, No. 23 Bloomington: Indiana University Press.Google Scholar
20. Garfinkle, AS (1981): Genetic and environmental influences on the development of Piagetian logico-mathematical concepts and other specific cognitive abilities: A twin study. Acta Genet Med Gemellol 30:000–000.Google Scholar
21. Hare, BA (1977): Perceptual deficits are not a cue to reading problems in 2nd grade. Reading Teacher 30:624–628.Google Scholar
22. Husen, T (1959): “Psychological Twin Research. I. A Methodological Study.” Stockholm: Almqvist & Wiksell.Google Scholar
23. Husen, T (1960): Abilities of twins. Scand J Psychol 1:125–135.Google Scholar
24. Jarvik, LF (1975): Human intelligence: Sex differences. Acta Genet Med Gemellol 24:189–211.CrossRefGoogle Scholar
25. Kahn, D, Birch, HG (1968): Development of auditory-visual integration and reading achievement. Percept Mot Skills 27:459–468.Google Scholar
26. Kirk, SA, McCarthy, JJ, Kirk, WD (1968): “Examiner's Manual: Illinois Test of Psycholinguistic Abilities,” revised edition Urbana, Illinois: University of Illinois Press.Google Scholar
27. Maccoby, EE, Jacklin, CN (1974): “The Psychology of Sex Differences” Stanford, California: Stanford University Press.Google Scholar
28. Machowsky, H, Meyers, J (1975): Auditory discrimination, intelligence, and reading achievement at grade 1. Percept Mot Skills 40:363–368.Google Scholar
29. Margolis, H (1977): Auditory perceptual test performance and the reflection-impulsivity dimension. J Learn Disabil 10:164–172.Google Scholar
30. Matheny, AP Jr, Dolan, AB (1974): A twin study of genetic influences in reading achievement. J Learn Disabil 7:99–102.Google Scholar
31. Moos, RH (1974): “Preliminary Manual for Family Environment Scale, Work Environment Scale, and Group Environment Scale.” Palo Alto, California: Consulting Psychologists Press, Inc.Google Scholar
32. Muehl, S, Kremenak, S (1966): Ability to match information within and between auditory and visual sense modalities and subsequent reading achievement. J Educ Psych 57:230–239.Google Scholar
33. National Center for Health Statistics (1971): Intellectual development of children as measured by the Wechsler Intelligence Scale, United States. “Vital and Health Statistics” PHS Pub No. 1,000, Series 11, No. 107 Public Health Service. Washington: US Government Printing Office.Google Scholar
34. Newman, HH, Freeman, FN, Holzinger, KJ (1937): “Twins: A Study of Heredity and Environment” Chicago: University of Chicago Press.Google Scholar
35. Ounsted, C, Taylor, DC (1972): “Gender Differences: Their Ontogeny and Significance” London: Churchill Livingstone.Google Scholar
36. Paraskevopoulos, JN, Kirk, SA (1969): “The Development and Psychometric Characteristics of the Revised Illinois Test of Psycholinguistic Abilities.” Urbana, Illinois: University of Illinois Press.Google Scholar
37. Pelham, WE, Ross, AO (1977): Selective attention in children with reading problems: A developmental study of incidental learning. J Abnorm Child Psychol 5:1–8.CrossRefGoogle Scholar
38. Pezzullo, TR, Thorsen, EE, Madaus, GF (1972): The heritability of Jensen's Level I and II and divergent thinking. Am Educ Res J 9:539–546.Google Scholar
39. Reilly, DH (1971): Auditory-visual integration, sex and reading achievement. J Educ Psychol 62:482–486.CrossRefGoogle Scholar
40. Rose, RJ, Harris, EL, Christian, JC, Nance, WE (1979): Genetic variance in nonverbal intelligence: Data from the kinships of identical twins. Science 205:1153–1155.Google Scholar
41. Rose, RJ, Boughman, JA, Corey, LA, Nance, WE, Christian, JC, Kang, KW (1980): Data from kinships of monozygotic twins indicate maternal effects on verbal intelligence. Nature 283:375–377.Google Scholar
42. Rourke, BP (1976): Reading retardation in children: Developmental lag or deficit? In Knights, RM, Bakker, DJ (eds): “The Neuropsychology of Learning Disorders: Theoretical Approaches.” Baltimore: University Park Press.Google Scholar
43. Samuels, SJ, Anderson, RH (1973): Visual recognition memory, paired-associate learning, and reading achievement. J Educ Psychol 65:160–167.Google Scholar
44. Samuels, SJ, Turnure, JE (1974): Attention and reading achievement in first-grade boys and girls. J Educ Psychol 66:29–32.Google Scholar
45. Smith, SM, Penrose, LS (1954–1955): Monozygotic and dizygotic twin diagnosis. Ann Hum Genet 19:273–289.Google Scholar
46. Specht, DA (1978): “Users Guide to Subprogram Reliability and Repeated Measures Analysis of Variance.” Wrubel Computing Center Report #352.Google Scholar
47. Specht, DA, Hohlen, M (1978): “SPSS Subprogram Reliability: Item and Scale Analysis.” Wrubel Computing Center Report #351.Google Scholar
48. Strandskov, H (1955): Some aspects of the genetics and evaluation of man's behavioral characteristics. Eugenics Quarterly 2:152–161.Google Scholar
49. Torgensen, J (1975): “Problems and Prospects in the Study of Learning Disabilities.” Chicago: The University of Chicago Press.Google Scholar
50. Vandenberg, SG (1962): The hereditary abilities study: Hereditary components in a psychological test battery. Am J Hum Genet 14:220–237.Google Scholar
51. Vande Voort, L, Senf, GM (1973): Audiovisual integration in retarded readers. J Learn Disabil 6:170–179.CrossRefGoogle Scholar
52. Vande-Voort, L, Senf, GM, Benton, AL (1972): Development of audio-visual integration in normal and retarded readers. Child Dev 43:1260–1272.Google Scholar
53. Vernon, MD (1971): “Reading and Its Difficulties: A Psychological Study.” London: Cambridge University Press.Google Scholar
54. Warren, DH, Anooshian, LJ, Widawski, MH (1975): Measures of visual-auditory integration and their relations to reading achievement in early grades. Percept Mot Skills 41:615–630.Google Scholar
55. Wechsler, D (1974): “Manual for the Wechsler Intelligence Scale for Children-Revised.” New York City: The Psychological Corporation.Google Scholar
56. Whiton, MB, Singer, DL, Cook, H (1975): Sensory integration skills as predictors of reading acquisition. J Read Behav 7:79–89.Google Scholar
57. Wictorin, M (1952): Bidrag till raknefardighetens psykolog. En tvilling undersokning. Goteborg: PhD thesis.Google Scholar
Cited in Husen, T (1959): “Psychological Twin Research: A Methodological Study.” Stockholm: Almqvist & Wiksells.Google Scholar
58. Woodcock, RW (1973): Woodcock Reading Mastery Tests Manual. Circle Pines, Minnesota: American Guidance Service, Inc.Google Scholar