I got 15/20. I echo with some other members who mentioned how exaggerated those faces are. Also, showing faces of individual people who look at you on a white background is almost as unecological a situation you can devise.
I remember another test which showed real life situations, with multiple persons looking at one another with various expressions, and answer choices such as "he feels embarrassed by what they said", where I scored miserably. The difference is significant. I suppose most of we "high functioning" autistic people have learned to see what individual expressions look like, but quickly interpreting complex social situations is much more challenging.
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ouroboros
A bit obsessed with vocabulary, semantics and using the right words. Sorry if it is a concern. It's the way I think, I am not hair-splitting or attacking you.