Harvard's got a clever little test that just gets you to click a few on-screen circles to guess your age. It was way off for me, apparently I'm meant to be 33 years old by Harvard's measure, but for the rest of the Giz UK staff it was only two years out. Just from clicking buttons. Wow.
It's something to do with the degradation of motor control as you age, which doesn’t exactly bode well for me. Anyway, try it out, see how old it thinks you are, and bung your results down in the comments. I want to see if anyone else appears to be way older than they are, or if it's just me.
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