Quantifying facial expression signal and intensity use during development
| Autor: | Junpeng Lao, Helen Rodger, Roberto Caldara |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male Aging Adolescent media_common.quotation_subject Emotion classification Bayesian probability Emotions Experimental and Cognitive Psychology 050105 experimental psychology Young Adult Developmental and Educational Psychology Psychophysics Humans 0501 psychology and cognitive sciences Emotional expression Child media_common Facial expression business.industry 05 social sciences Pattern recognition Bayes Theorem Disgust Expression (mathematics) Facial Expression Surprise Child Preschool Female Artificial intelligence business Psychology Facial Recognition Photic Stimulation 050104 developmental & child psychology |
| Zdroj: | Journal of experimental child psychology. 174 |
| ISSN: | 1096-0457 |
| Popis: | Behavioral studies investigating facial expression recognition during development have applied various methods to establish by which age emotional expressions can be recognized. Most commonly, these methods employ static images of expressions at their highest intensity (apex) or morphed expressions of different intensities, but they have not previously been compared. Our aim was to (a) quantify the intensity and signal use for recognition of six emotional expressions from early childhood to adulthood and (b) compare both measures and assess their functional relationship to better understand the use of different measures across development. Using a psychophysical approach, we isolated the quantity of signal necessary to recognize an emotional expression at full intensity and the quantity of expression intensity (using neutral expression image morphs of varying intensities) necessary for each observer to recognize the six basic emotions while maintaining performance at 75%. Both measures revealed that fear and happiness were the most difficult and easiest expressions to recognize across age groups, respectively, a pattern already stable during early childhood. The quantity of signal and intensity needed to recognize sad, angry, disgust, and surprise expressions decreased with age. Using a Bayesian update procedure, we then reconstructed the response profiles for both measures. This analysis revealed that intensity and signal processing are similar only during adulthood and, therefore, cannot be straightforwardly compared during development. Altogether, our findings offer novel methodological and theoretical insights and tools for the investigation of the developing affective system. |
| Databáze: | OpenAIRE |
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