Maybe the people with social anxiety think more about what other people are thinking than those of us without, and so do better at this sort of test? Just a thought, I've never had that issue myself so don't know how it works.
There's a significant degree of hyper-monitoring others' emotions that, as I speculated upthread, could lead to this, though at least for me I thought I tended to misread others' emotions (leading to paranoia).
Well, of course I'm paranoid about everything. Hell, with Jeff as DM, I'd be paranoid even if we were playing a game set in The Magic Kiddie Funland of Perfectly Flat Planes and Sugar Plums.
Greenman by Bradakhan/Spring Greenman by Comissar/Autumn Greenman by Sgt. Pepper/Winter Greenman by gurgleflep