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standard view: fixed expressions linked to emotional categories
 
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\subsection{slide-4}
Are the things categorised by perceptual processes facial configurations? This view faces a problem. There is evidence that the same facial configuration can express intense joy or intense anguish depending on the posture of the body it is attached to, and, relatedly, that humans cannot accurately determine emotions from spontaneously occurring (spontaneously occurring---i.e.\ as opposed to acted out) facial configurations \citep{motley:1988_facial,aviezer:2008_angry,aviezer:2012_body}. These and other findings, while not decisive, cast doubt on the view that categories of emotion are associated with categories of facial configurations \citep{hassin:2013_inherently}.
 
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\subsection{slide-5}
This evidence makes the findings we have reviewed on categorical perception puzzling. Given that the facial configurations are not diagnostic of emotion, why are they categorised by perceptual processes?% \footnote{ Compare \citet[p.\ 1228]{aviezer:2012_body}: `although the faces are inherently ambiguous, viewers experience illusory affect and erroneously report perceiving diagnostic affective valence in the face.' } This question appears unanswerable as long as we retain the assumption---for which, after all, no argument was given---that the things categorical perception is supposed to categorise are facial configurations. .handout: :t \citet[p.\ 1228]{aviezer:2012_body}: `[A]lthough the faces are inherently ambiguous, viewers experience illusory affect and erroneously report perceiving diagnostic affective valence in the face' \citet[p.\ 1228]{aviezer:2012_body}. But do they?
 
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\subsection{slide-7}
But if we reject this assumption, what is the alternative?
 
Are the things categorised by perceptual processes facial configurations? This view faces a problem. There is evidence that the same facial configuration can express intense joy or intense anguish depending on the posture of the body it is attached to, and, relatedly, that humans cannot accurately determine emotions from spontaneously occurring (spontaneously occurring---i.e.\ as opposed to acted out) facial configurations \citep{motley:1988_facial,aviezer:2008_angry,aviezer:2012_body}. These and other findings, while not decisive, cast doubt on the view that categories of emotion are associated with categories of facial configurations \citep{hassin:2013_inherently}.
 

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