@Brinn
I honestly can't see how it is possible to deduce an "emotion" from a glance at someone's eyes
It's not! And the photos are not conveying real emotion. I'm not sure how they developed the test, but it seems likely that they validated it by checking what emotions a large number of people identified from each picture. Rather than, say, how the model actually felt at the time the picture was taken, which would be difficult to measure anyway.
So, it's like, we have certain conventions to communicate emotion types, and these conventions are learned. Eyes wide for surprise, for example, eyebrows down for anger, and so on. It's like, with little kids they learn that pictures with 2 pointy ears and whiskers represent "cat" or any comic with eyelashes is a girl, even those those things don't resemble reality. It's symbolic.
Why people with autism tend to do worse on average as a population at recognizing the convention of emotion representation in eye photos is another matter. I don't know why. Does it have anything to do with constructing/recognising real emotion when time, context and real people are present? Maybe, maybe not. My opinion is not because recognising conventions from photos is a different task entirely.
That's an interesting theory. I guess you could only really investigate it if people had no a priori experience of emotions on faces to discount any possibility of learning conventions!
And I guess that is extremely unlikely!
I actually took the test again today to refamiliarize myself with it. I actually found it incredibly hard when approaching it consciously, deliberately- I thought to myself for many of the questions either 'I have absolutely no idea' or 'well it's either 1 or 2 out of 4' much of the time. By question 5 I decided there was no point in thinking too hard and I went with my gut more. Despite finding it (consciously) impossible, and just clicking intuitively I still scored 31 out of 36, which is pretty high for that test. Retest 8 hours later, questions had been randomized, I scored 30.
I guess what I'm trying to say anecdotally - sample size - me! ...Is that I think it would be really hard to doggedly learn the 'correct' or 'conventional' response from real life experience to correspond to these test items.
socialintelligence.labinthewild.org/mite/
Take a look at them - you would probably need 500 written words at least to try to distinguish one pic from the other to another person...''uh...there's 2 eyes, and i think they're looking slightly downward, and to the side a bit, and uhhh....the eyebrows look quite long and heavy...and uh....there's 2 ....no, well 4 ...if you count the little ones...wrinkles at the side of the right eye,....and uhh...they maybe extend....4 mm? Except for the one on the bottom, it's maybe 8 mm..?...and it goes straight to start off with and then tapers down....maybe around the 5th mm? And the whites of the eyes....they're maybe, uhhh, well for the left eye, on the right of the pupil and a bit to the up as well...I guess the white of the eye is maybe between 120% and 160% of the size of the pupil of the eye...?" The right eye, well it's harder to tell..... it's at an angle more...maybe 80% of the size of the pupil...but like I say, that's distorted because of the angle the viewer is presented with... ...uhhhh...and the eyelashes ...uhh"
Gut instinct isn't consciously measuring any of that, it's just shouting out loud 'OMG that person is so sarcastic'!!!
This isn't a Simpsons cartoon where people can look at 2 eyes and 2 eyebrows and say 'Homer happy', 'Marge pissed off'...this test items comprise surprisingly complex visual stimuli asking people to identify really elaborate emotions - and people are going with gut instinct and the 'neurotypicals' are agreeing with each other! And that's the fascinating thing!
I wonder if researchers have tested other primates with similar test stimuli (of their own species). That would be fascinating.