[probablybroken]

This was my feeling too.. I suspect there's enough overlap between those people who are interested in completing IQ tests, and those on the spectrum to create the same effect mentioned by the author. I found their comment about small talk particularly reflects this; My experience is that I can't engage in it with strangers as it feels like forced dumb chat, with the end result that a lot of people I casually interact with end up treating me like I'm mentally retarded.