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In:The Acquisition of Turkish in Childhood
Edited by Belma Haznedar and F. Nihan Ketrez
[Trends in Language Acquisition Research 20] 2016
► pp. 57–78

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Turkish children’s early vocabulary

A study on the lexical diversity of two sisters

 | Middle East Technical University, Turkey
 | Middle East Technical University, Turkey
Published online: 18 November 2016
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https://doi.org/10.1075/tilar.20.03kay
Abstract
This study examines the lexical development of two Turkish sisters (aged 1;4 and 2;3) and measures their lexical diversity in spontaneous production data. It suggests that the dependence of the TTR (type-to-token ratio) on the token size may indicate differential levels of lexical diversity. To measure the decrease in the TTR with respect to the increasing token size, it provides a method based on Herdan’s Log TTR. The noun TTR is found to be higher than the TTR of other lexical categories in the data, implying the prevalence of nouns in early lexicon until a sharp increase in the verb TTR around 2;3.
Article outline
  • 1.Introduction
  • 2.Assessing lexical diversity
    • 2.1Computing type-to-token ratio (TTR)
    • 2.2Common methods of measuring lexical diversity
    • 2.3Early lexical acquisition: The view from Turkish
  • 3.The current study
    • 3.1Participants and data
    • 3.2Transcription and coding procedures
    • 3.3Children’s lexicon sizes and measuring TTR across ages
      • 3.3.1Lexicon size: Descriptive statistics
      • 3.3.2TTRs with respect to age
    • 3.4Lexical diversity with respect to age: Herdan’s Log TTR
  • 4.Summary and conclusions
  • Acknowledgments
  • Notes
  • References
References (35)
References
Aksu-Koç, A. & Slobin, D.I. 1985. The acquisition of Turkish. In The Crosslinguistic Study of Language Acquisition, Vol 1., D. Slobin, (ed.), 839–878. Hillsdale NJ : Lawrence Erlbaum Associates.Google Scholar logo with link to Google Scholar
Altınkamış-Türkay, N.F. 2005. Children’s Early Lexicon in Terms of Noun/Verb Dominance. PhD dissertation, Çukurova University.Google Scholar logo with link to Google Scholar
Altınkamış, N.F., Kern, S. & Sofu, H. 2014. When context matters more than language: Verb or noun in French and Turkish caregiver speech. First Language 34(6): 537–550. Google Scholar logo with link to Google Scholar
Avcu, E. 2014. Nouns-First, Verbs-First and Computationally-Easier First: A Preliminary Design to Test the Order of Acquisition. MS dissertation, Middle East Technical University.Google Scholar logo with link to Google Scholar
Bassano D., Maillochon, I. & Eme, E. 1998. Developmental changes and variability in the early lexicon: A study of French children’s naturalistic productions. Journal of Child Language 25(3): 493–531. Google Scholar logo with link to Google Scholar
Bassano, D. 2000. Early lexical development of nouns and verbs in French: Exploring the interface between lexicon and grammar. Journal of Child Language 27: 521–559. Google Scholar logo with link to Google Scholar
Brown, P. 1998. Children’s first verbs in Tzeltal: Evidence from an early verb category. Linguistics 36(4): 713–753. Google Scholar logo with link to Google Scholar
Carroll, J.B. 1964. Language and Thought. Upper-Saddle River NJ: Prentice-Hall.Google Scholar logo with link to Google Scholar
Diesendruck G. 2007. Mechanisms of word learning. In Blackwell Handbook of Language Development, E. Hoff & M. Shatz (eds), 257–276. Oxford: Blackwell. Google Scholar logo with link to Google Scholar
Gentner, D. 1982. Why nouns are learned before verbs: Linguistic relativity versus natural partitioning. In Language Development [Language, Thought and Culture 2], S.A. Kuczaj (ed.), 38–62. Hillsdale NJ : Lawrence Erlbaum Associates.Google Scholar logo with link to Google Scholar
Guiraud, P. 1960. Problèmes et méthodes de la statistique linguistique. Paris: Presses Universitaires de France.Google Scholar logo with link to Google Scholar
Herdan, G. 1960. Type-Token Mathematics: A Textbook of Mathematical Linguistics. The Hague: Mouton.Google Scholar logo with link to Google Scholar
Johansson, V. 2009. Lexical diversity and lexical density in speech and writing: A developmental perspective. Lund Working Papers in Linguistics 53: 61–79.Google Scholar logo with link to Google Scholar
Ketrez, F.N. 1999. Early Verbs and the Acquisition of Turkish Argument Structure. MA thesis, Boğaziçi University.Google Scholar logo with link to Google Scholar
2003. Distributional properties of nouns and verbs in Turkish child-directed speech. USC Working Papers in Linguistics 1: 121–144.Google Scholar logo with link to Google Scholar
Klee, T. 1992. Developmental and diagnostic characteristics of quantitative measures of children’s language production. Topics in Language Disorders (12): 28–41. Google Scholar logo with link to Google Scholar
Küntay, A. & Slobin, D.I. 2001. Discourse behaviour of lexical categories in Turkish child-directed speech: Nouns vs. verbs. In Research on Child Language Acquisition: Proceedings of the 8th Conference of the Association for the Study of Child Language, M. Almgren, A. Barreña, M.-J. Ezeizabarrena, I. Idiazabal & B. MacWhinney (eds), 928–946. Sommerville MA: Cascadilla Press.Google Scholar logo with link to Google Scholar
MacWhinney, B. 2000. The CHILDES Project: Tools for Analyzing Talk, 3rd edn. Mahwah NJ: Lawrence Erlbaum Associates.Google Scholar logo with link to Google Scholar
Malvern, D., Richards, B., Chipere, N. & Duran, P. 2004. Lexical Diversity and Language Development: Quantification and Assessment. Houndmills: Palgrave McMillan. Google Scholar logo with link to Google Scholar
Miller, J.F. 1991. Quantifying productive language disorders. In Research on Child Language Disorders: A Decade of Progress, J.F. Miller (ed.), 211–220. Austin TX: Pro-Ed.Google Scholar logo with link to Google Scholar
Mintz, T.H., Newport, E. & Bever, T.G. 2002. The distributional structure of grammatical categories in speech to young children. Cognitive Science 26: 393–424. Google Scholar logo with link to Google Scholar
Pan, A.B. 2012. Assessing vocabulary skills. In Research Methods in Child Language: A Practical Guide, E. Hoff (ed.), 100–112. Oxford: Blackwell.Google Scholar logo with link to Google Scholar
Poulin-Dubois, D. & Graham, S.A. 2007. Cognitive processes of early word learning. In Blackwell Handbook of Language Development, E. Hoff & M. Shatz (eds), 191–211. Oxford: Blackwell. Google Scholar logo with link to Google Scholar
Sofu, H. & Türkay, F. 2005. Input frequency effects of child-directed speech in terms of noun-verb dominance. Paper presented at 27th Annual Meeting of the German Linguistic Association, Indeterminism in Language. Cologne: Cologne University.
Tardif, T. 1996. Nouns are not always learned before verbs: Evidence from Mandarin speakers’ early vocabularies. Developmental Psychology 32: 492–504. Google Scholar logo with link to Google Scholar
Tardif, T., Shatz M. & Naigles, L. 1997. Caregiver speech and children’s use of nouns vs. verbs: A comparison of English, Italian and Mandarin. Journal of Child Language 24: 535–565. Google Scholar logo with link to Google Scholar
Tardif, T., Gelman, S.A. & Xu, F. 1999. Putting the noun bias in context: A comparison of Mandarin and English. Child Development 70: 620–635. Google Scholar logo with link to Google Scholar
Ure, J. & Ellis, J. 1977. Register in descriptive linguistics and linguistic sociology. In Issues in Sociolinguistics, O. Uribe-Villas (ed.), 197–243. The Hague: Mouton. Google Scholar logo with link to Google Scholar
Watkins, R.V., Kelly, D.J., Harbers, H.M. & Hollis, W. 1995. Measuring children’s lexical diversity: Differentiating typical and impaired language learners. Journal of Speech and Hearing Research 38: 1349–1355. Google Scholar logo with link to Google Scholar
Waxman, S., Xiaolan, F., Arunachalan, S., Leddon, E., Geraghty, K. & Song, H.J. 2013. Are nouns learned before verbs? Infant provide insight into a long-standing debate. Child Development Perspectives 7(3): 155–159. Google Scholar logo with link to Google Scholar
Xanthos, A., Laaha, S., Gillis, S., Stephany, U., Aksu-Koç, A., Christofidou, A., Gagarina, N., Hrzica, G., Ketrez, F.N., Kilani-Schoch, M., Korecky-Kröll, K., Kovačević, M., Laalo, K., Palmović, M., Pfeiler, B., Voeikova, M.D. & Dressler, W.U. 2012. On the role of morphological richness in the early development of noun and verb inflection. First Language 31(4): 461–479. Google Scholar logo with link to Google Scholar
Xanthos, A. & Gillis, S. 2010. Quantifying the development of inflectional diversity. First Language 30(2): 175–198. Google Scholar logo with link to Google Scholar
Xuan, L. & Dollaghan, C. 2013. Language-specific noun bias: Evidence from bilingual children. Journal of Child Language 40(05): 1057–1075. Google Scholar logo with link to Google Scholar
Yu, G. 2007. Lexical Diversity in MELAB Writing and Speaking Performance. In Spaan Fellow Working Papers in Second or Foreign Language Assessment 5, J. S. Johnson, E., Lagergren & I. Plough (eds.), 79–116. Ann Arbor MI: University of Michigan.Google Scholar logo with link to Google Scholar
2010. Lexical diversity in writing and speaking task performances. Applied Linguistics 31(2): 236–259. Google Scholar logo with link to Google Scholar
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