You correctly identified 57% of the expressions. For each emotion expressed, your score is as follows:
Joy: you correcly identified 4 of 4
Fear: you correcly identified 1 of 4
Disgust: you correcly identified 3 of 4
Surprise: you correcly identified 2 of 4
Anger: you correcly identified 2 of 4
Sadness: you correcly identified 1 of 4
Contempt: you correcly identified 3 of 4
Apparently I often mistook sadness as disgust/contempt, and I switched surprise and fear a few times.
Also, the introduction made me laugh.
"Imagine what life would be like if we had no idea what other people were feeling. While romantic comedies have long relied on crossed signals to entertain us, in the real world it would be a disaster to misread the intentions of an enemy, a lover, or a friend."
It would be disastrous indeed. 
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Shannon - 18 - Female - Strange Animal Enthusiast - May or may not be an Aspie
"I'm sorry! I was young and foolish and hadn't eaten anything in four hours!"