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Context-dependent categorical perception of surprise
Jenna L Cheal1, M D Rutherford
1Department of Psychology, Neuroscience and Behaviour, McMaster University, Hamilton, ON L8S 4K1, Canada. jenna.cheal@gmail.com
Perception
|July 11, 2013
Summary
Disambiguating the valence of surprise facial expressions improved categorical perception. Providing context for surprise expressions enhanced how people identified and discriminated between emotions, especially fear and happiness.
Area of Science:
- Psychology
- Cognitive Science
- Social Neuroscience
Background:
- Categorical perception of facial expressions is crucial for social interaction.
- The valence (positive/negative) of surprise expressions is ambiguous, potentially hindering categorical perception.
Purpose of the Study:
- To investigate if disambiguating the valence of surprise facial expressions facilitates categorical perception.
- To examine the effect of contextual valence on the identification and discrimination of facial expressions.
Main Methods:
- Participants identified and discriminated facial expressions along continua (happy-fear, surprise-fear, happy-surprise).
- Surprise expressions were presented with either positive or negative valence contexts.
- Identification curves and discrimination performance were analyzed.
Main Results:
- Both contextual and non-contextual groups showed typical identification curves.
- Discrimination performance was better predicted by identification when surprise expressions were presented with valence context.
- Categorical perception was facilitated by disambiguating context for happy-fear and surprise-fear continua.
Conclusions:
- Disambiguating the valence of surprise facial expressions can facilitate categorical perception.
- Contextual information plays a significant role in refining the perception of ambiguous emotional expressions.
- Understanding the influence of valence on emotion perception is key to social cognition research.
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