This test from the Ghent University Center for Reading Research has been making the rounds (I found it via Erin McKean’s Facebook feed), and it’s fun and educational, so I’m passing it on for the general delectation. My results: “You said yes to 93% of the existing words. You said yes to 0% of the nonwords. This gives you a corrected score of 93% – 0% = 93%. You are at the top level!” A warning: they say “Do not say yes to words you do not know, because yes-responses to nonwords are penalized heavily!,” and this so traumatized me I didn’t say yes to what turned out to be perfectly acceptable words like expletively and gauntleted; if I had realized that normal derivational forms were OK, my score would have been higher. (On the other hand, there’s no way I would have said yes to verticillastrate; I still have trouble believing it’s a word.) The last time I checked the MetaFilter thread about it, the highest reported score was 96%. Have fun!