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Supertopics:
EvPsych Perspective on Particular Topics
Emotion
Evolutionary Psychology on Emotion
Subtopics:
Evolutionary Psychology on Humor and Laughter
Theories on Why We Laugh (Gelatology)
Theories on Why We Appreciate Humor
Brain Regions Linked with Humor
Laughter in Non-Human Animals
International Society for Humor Studies (ISHS)
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Emotion in Non-Human Animals
Affection in Non-Human Animals
Laughter in Non-Human Animals
Moral Sentiments in Non-Human Animals
Emotion in Non-Human Animals Miscellany
Evolutionary Psychology on Emotion Miscellany
only four emotional facial expressions
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ScienceDaily
2014-02-03