On: Estimate the size of your English vocabulary (2014)

[ggcdn]

For science! 67% for me.

My brain small. Sad!

[benburleson → ggcdn]

Don't worry, I got less than that, but 0 bad guesses!

I'd bet there is a bias from those reporting scores here -- a humblebrag, for science, of course!

[PappaPatat → benburleson]

As a none native speaker (English would be my 3rd language at best, maybe 4th) I expected to dramatically underperform compared to most scores here, but:

You said yes to 76% of the existing words.

You said yes to 0% of the nonwords.

This gives you a corrected score of 76% - 0% = 76%.

Which I find oddly high.