I had a hard time with the letter/number one, since to me, vowels seem even, while consonants seem odd, while the pairing in the test was the opposite. I kept

I had a hard time with the letter/number one, since to me, vowels seem even, while consonants seem odd, while the pairing in the test was the opposite. I kept wanting to click on the wrong side, even though I correctly identified the object. I did only get one wrong (and knew it the second I clicked), but I think I could have done it faster without the extra mental processing to override my urge to click on the wrong spot.