https://www.sciencedaily.com/releases/2017/06/170607123843.htm

The paper this is from is fascinating and instructive… (see link in comments section).

“Previous studies have found that people with autism and anorexia tend to score lower on the Eyes Test. The team found that genetic variants that contribute to higher scores on the Eyes Test also increase the risk for anorexia, but not autism. They speculate that this may be because autism involves both social and non-social traits, and this test only measures a social trait.”