Johnson | Vocabulary size

Lexical facts

By R.L.G. | NEW YORK

SEVERAL years ago we mentioned TestYourVocab.com here on the blog. Not long ago, the site reached its two millionth test result, and so the researchers have put together some data:

  • Most adult native test-takers range from 20,000–35,000 words
  • Average native test-takers of age 8 already know 10,000 words
  • Average native test-takers of age 4 already know 5,000 words
  • Adult native test-takers learn almost 1 new word a day until middle age
  • Adult test-taker vocabulary growth basically stops at middle age
  • The most common vocabulary size for foreign test-takers is 4,500 words
  • Foreign test-takers tend to reach over 10,000 words by living abroad
  • Foreign test-takers learn 2.5 new words a day while living in an English-speaking country

In a separate post, though, comes a surprising fact: the reading of fiction specifically is as important as reading generally. People who read "lots" and fiction "lots" outscore those who read "lots" but fiction only "somewhat" or "not much". This is because a wider range of vocabulary is typically used in fiction than in non-fiction writing.

And if you're wondering "how accurate can this short test be?" the details of the methodology are quite interesting and clearly explained. So if you haven't tested yourself, do.

Everyone ignored my remark that "bragging in the comments is naff" last time, so go ahead and brag away.

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