lecture16

lecture16 - Perceiving personality from voice Following a...

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Perceiving personality from voice Following a few final notes on emotion
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A few final words on emotion Cross-cultural aspects of emotion perception An interesting area of study, because bioethological theories usually postulate that at least some emotions are innate/genetically determined Issue of separating biological from cultural explanations for emotional displays
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Biology or culture? Not necessarily mutually exclusive explanations Emotions may be innate, but learning to control emotions, emotional displays, perception of emotions, may be culture-specific. Specific emotions might be culture-specific while broad dimensions like arousal may be universal.
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Cross-cultural aspects of emotion perception A large literature, but focused mostly on faces, not voices Data from faces: Accuracy of emotion perception is higher when emotion is expressed and recognized by members of same national, ethnic, or regional group—an in-group advantage Majority group members do worse at recognizing emotion from minority group faces than vice versa.
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Cross-cultural aspects of emotion perception Emotion is less accurately perceived from voice than from faces, suggesting more complex/less stereotyped expressions; SO… Less in-group advantage with voices than with faces, but less cross-cultural accuracy as well. Richer information might be more difficult to decode, but might also be less susceptible to cultural conventions than stylized facial expressions of emotion.
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Behavioral data Some limited behavioral data Dromey et al.: 3 groups of listeners (monoglot English, polyglot English, native speakers of 25 different languages) Asked to recognize emotions in English utterances Polyglot English speakers most accurate; nonnative speakers of English least accurate Suggests learning a second language sensitizes listeners to subtle cues in language; or maybe listeners who are innately sensitive are more able to learn a second language.
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Imaging data Lots and lots of behavioral data that recognizing emotions involves primarily the right cerebral hemisphere Increasing amounts of imaging data
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Infants Evoked response potential data; 7 month old infants Enhanced response to emotional voice stimuli overall, but to angry voices (vs. happy or neutral) in particular Evolutionary advantage to detecting anger?
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Adults also show heightened responses to negative stimuli fMRI data: Played angry or neutral stimuli dichotically to listeners, asked them to attend to one ear only and do a gender recognition task Enhanced responses (right middle superior temporal sulcus) for angry relative to neutral prosody, regardless of attention. Enhanced sensory response to emotional stimuli might
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lecture16 - Perceiving personality from voice Following a...

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