Now this is a vocabulary test.
An independent American-Brazilian research project is “measuring vocabulary sizes according to age and education, and particularly to compare native learning rates with foreign language classroom learning rates.” They ask you to check all the words you can define, not just ones you think you’ve seen before. I got a respectable score, but yours will probably be better. Feel free to let us know. If you know what vibrissae and uxoricide are without me telling you, you’ll do great on this test.
Your total vocabulary size is estimated to be:
40,300
words.
I think that’s good, but I’d like to know what the standard distribution is on this figure.
That’s a great vocabulary. I think the average size is 27,000-35,000 for native speakers. The site has FAQs and details posted to answer your questions.