Pre-verbal infants perceive emotional facial expressions categorically

Cognition and Emotion 33 (3):391-403 (2018)

Abstract
ABSTRACTAdults perceive emotional expressions categorically, with discrimination being faster and more accurate between expressions from different emotion categories than between two stimuli from the same category. The current study sought to test whether facial expressions of happiness and fear are perceived categorically by pre-verbal infants, using a new stimulus set that was shown to yield categorical perception in adult observers. These stimuli were then used with 7-month-old infants using a habituation and visual preference paradigm. Infants were first habituated to an expression of one emotion, then presented with the same expression paired with a novel expression either from the same emotion category or from a different emotion category. After habituation to fear, infants displayed a novelty preference for pairs of between-category expressions, but n...
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DOI 10.1080/02699931.2018.1455640
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Language, Thought, and Color: Whorf Was Half Right.Terry Regier & Paul Kay - 2009 - Trends in Cognitive Sciences 13 (10):439-446.

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