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Language Disabilities in Three Twin Pairs and Their Relatives

Published online by Cambridge University Press:  01 August 2014

Maria R.L. Borges-Osório  and
Francisco M. Salzano
Maria R.L. Borges-Osório
Affiliation:
Department of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
Francisco M. Salzano*
Affiliation:
Department of Genetics, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
*
Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 1953, 90000 Porto Alegre, RS, Brazil

Abstract

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Three pairs of monozygotic twins were ascertained during a general survey of language disabilities conducted among schoolchildren of Porto Alegre, Brazil. Two of them were concordant for dysgraphia, dysorthographia, dyslexia, and speech defects, while the other was concordant for dysorthographia and dyslexia, but discordant for dysgraphia. Two of the mothers and two sibs also presented language problems, but of a type that was not completely similar to those of the twins. Concomitant neurological and psychological studies, as well as the family histories, helped to understand the similarities and dissimilarities observed.

Keywords

Language disabilitiesNeuropsychological evaluationsDysgraphiaDysorthographiaDyslexiaSpeech defects
Type
Case Report
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 34 , Issue 1-2 , April 1985 , pp. 95 - 100
Copyright
Copyright © The International Society for Twin Studies 1985

References

REFERENCES

1. Bender, L (1974): Test Guestáltico Visomotor: Usos y Aplicaciones Clínicas (BG), 6th Ed. Buenos Aires: Paidós.Google Scholar
2. Borel-Maisonny, S (1960): Language Oral et Ecrit. Neuchâtel: Delachaux & Niestlé.Google Scholar
3. Borges-Osório, MRL (1985): Fatores Genéticos e do Ambiente nos Distúrbios de Linguagem. Ph.D. Thesis, Curso de Pós-graduaçâo em Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.Google Scholar
4. Galifret-Granjon, N (1960): Une batterie de dominance latérale. In Zazzo, R (ed): Manuel pour l'Examen Psychologique de l'Enfant. Delachaux & Niestlé, p. 18–36.Google Scholar
5. Godai, U, Tatarelli, R, Bonanni, G (1976): Stuttering and tics in twins. Acta Genet Med Gemellol 25:369–375.CrossRefGoogle ScholarPubMed
6. Harris, AJ (1958): Harris Tests of Lateral Dominance, 3rd Ed. New York: Psychological Corporation.Google Scholar
7. Herschel, M (1978): Dyslexia revisited; a review. Hum Genet 40:115–134.Google Scholar
8. Howie, PM (1981): Intrapair similarity in frequency of disfluency in monozygotic twin pairs containing stutterers. Behav Genet 11:227–238.CrossRefGoogle ScholarPubMed
9. Koppitz, EM (1980): El Test Guestáltico Visomotor para Niños, 8th Ed. Buenos Aires: Guadalupe.Google Scholar
10. Lefèvre, AB (1972): Exame Neurológico Evolutivo do Pré-Escolar Normal. São Paulo: Sarvier.Google Scholar
11. Lenneberg, EH (1967): Language in light of evolution and genetics. In Lenneberg, EH (ed): Biological Foundations of Language. New York: John Wiley & Sons, p. 227–270.Google Scholar
12. Matheny, AP Jr, Bruggemann, CE (1973): Children's speech hereditary components and sex differences. Folia Phoniat 25: 442–449.Google Scholar
13. Maynard-Smith, S, Penrose, LS, Smith, CAB (1961): Mathematical Tables for Research Workers in Human Genetics. Boston: Little, Brown & Co.Google Scholar
14. Rotta, NT (1975): Avaliação Neurológica Evolutiva, Eletrencefalográfica e Psicológica em Crianças com Rendimento Escolar Deficiente. Privat Docent Thesis, Fundação Faculdade Católica de Medicina, Porto Alegre, Brazil.Google Scholar
15. Salzano, FM, Callegari-Jacques, SM, Franco, MHLP, Hutz, MH, Weimer, TA, Silva, RS, Da Rocha, FJ (1980): The Caingang revisited: Blood genetics and anthropometry. Am J Phys Anthropol 53: 513–524.Google Scholar
16. Schulman, J, Leviton, A (1978): Reading disabilities: an epidemiologic approach. In Myklebust, HR (ed): Progress in Learning Disabilities. New York: Grane & Stratton, p. 65–96.Google Scholar
17. Vayer, P (1982): A Criança diante do Mundo na Idade da Aprendizagem Escolar. Porto Alegre: Artes Médicas, p. 242–244.Google Scholar
18. Wechsler, D (1964): Escala de Inteligência Wechsler para Crianças, WISC, Manual. Rio de Janeiro: Cepa.Google Scholar
19. Zerbin-Rüdin, E (1967): Kongenitale Wortblindheit oder spezifische Dyslexie (congenital word-blindness). Bull Orton Soc 17:47–54.Google Scholar