Hmm, as he kind of points out, there is a difference between knowing your ability in something is poor and being willing to admit it to a stranger. The usual m

Hmm, as he kind of points out, there is a difference between knowing your ability in something is poor and being willing to admit it to a stranger. The usual meme of Dunning-Kruger tends to refer to people who are oblivious to their own incompetence. But there are valid reasons for the perceived score compression. I'd wager the people in the bottom quartile of grammar performance are well aware that their grammar isn't very good, they just weren't willing to write 20 on the paper (out of shame) and went for 60 instead.