A Psychometric Evaluation of the Facial Action Coding System for Assessing Spontaneous Expression |
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| Authors: | Michael A Sayette Jeffrey F Cohn Joan M Wertz Michael A Perrott Dominic J Parrott |
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| Institution: | (1) Department of Psychology, University of Pittsburgh, 604 Old Engineering Hall, Pittsburgh, PA, 15260;(2) University of Pittsburgh, Pittsburgh |
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| Abstract: | The Facial Action Coding System (FACS) (Ekman & Friesen, 1978) is a comprehensive and widely used method of objectively describing facial activity. Little is known, however, about inter-observer reliability in coding the occurrence, intensity, and timing of individual FACS action units. The present study evaluated the reliability of these measures. Observational data came from three independent laboratory studies designed to elicit a wide range of spontaneous expressions of emotion. Emotion challenges included olfactory stimulation, social stress, and cues related to nicotine craving. Facial behavior was video-recorded and independently scored by two FACS-certified coders. Overall, we found good to excellent reliability for the occurrence, intensity, and timing of individual action units and for corresponding measures of more global emotion-specified combinations. |
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| Keywords: | FACS facial expression reliability |
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