Word knowledge in the crowd: Measuring vocabulary size and word prevalence in a massive online experiment

@article{Keuleers2015WordKI,
  title={Word knowledge in the crowd: Measuring vocabulary size and word prevalence in a massive online experiment},
  author={Emmanuel Keuleers and Micha{\"e}l A. Stevens and Paweł Mandera and Marc Brysbaert},
  journal={Quarterly Journal of Experimental Psychology},
  year={2015},
  volume={68},
  pages={1665 - 1692}
}
We use the results of a large online experiment on word knowledge in Dutch to investigate variables influencing vocabulary size in a large population and to examine the effect of word prevalence—the percentage of a population knowing a word—as a measure of word occurrence. Nearly 300,000 participants were presented with about 70 word stimuli (selected from a list of 53,000 words) in an adapted lexical decision task. We identify age, education, and multilingualism as the most important factors… 
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