How many words do children know? A corpus-based estimation of children’s total vocabulary size

@article{Segbers2017HowMW,
  title={How many words do children know? A corpus-based estimation of children’s total vocabulary size},
  author={Jutta Segbers and Sascha Schroeder},
  journal={Language Testing},
  year={2017},
  volume={34},
  pages={297 - 320}
}
In this article we present a new method for estimating children’s total vocabulary size based on a language corpus in German. We drew a virtual sample of different lexicon sizes from a corpus and let the virtual sample “take” a vocabulary test by comparing whether the items were included in the virtual lexicons or not. This enabled us to identify the relation between test performance and total lexicon size. We then applied this relation to the test results of a real sample of children (grades 1… 

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References

SHOWING 1-10 OF 55 REFERENCES

Vocabulary simplification for children: a special case of ‘motherese’?

TLDR
A new corpus of spontaneous conversations between adults and children is examined for evidence that adults simplify their vocabulary choices when speaking with young children, but adults do not choose their words from the 10,000 most common word-types in English in an age-dependent manner.

Does frequency count? Parental input and the acquisition of vocabulary

ABSTRACT Studies examining factors that influence when words are learned typically investigate one lexical category or a small set of words. We provide the first evaluation of the relation between

Early vocabulary growth: Relation to language input and gender.

This study examines the role of exposure to speech in children's early vocabulary growth. It is generally assumed that individual differences in vocabulary depend, in large part, on variations in

Estimating the Size of Vocabularies of Children and Adults

ONE OF THE oldest problems in educational research has been the estimation of vocabulary size of children and adults. Estimates for the same age groups vary considerably; some of the more re cent

Early lexical development in German: a study on vocabulary growth and vocabulary composition during the second and third year of life

TLDR
The study describes the development of various categories of words and questions the preponderance of nouns in spontaneous speech, and trend analyses clarify characteristic developmental patterns in regard to certain word categories.

Why are some verbs learned before other verbs? Effects of input frequency and structure on children's early verb use

TLDR
The effect of syntactic diversity in input provides support for the syntactic bootstrapping account of how children use structural information to learn the meaning of new verbs, suggesting that the way verbs appear in input influences their ease of acquisition.

childLex: a lexical database of German read by children

This article introduces childLex, an online database of German read by children. childLex is based on a corpus of children’s books and comprises 10 million words that were syntactically annotated and

THE MEASUREMENT OF INDIVIDUAL DIFFERENCES IN GENERAL ENGLISH VOCABULARIES

In attempting to answer the apparently simple question, "How many words do you know," numerous investigations have discovered that individual vocabularies, from childhood to maturity, are much larger

Toward a Meaningful Definition of Vocabulary Size

Studies using dictionary-sampling methods to estimate vocabulary size have left a bewildering trail of widely differing estimates. We argue that many estimates are misleading (generally too high)
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