2019
DOI: 10.1371/journal.pone.0223905
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Assessing the convergent validity between the automated emotion recognition software Noldus FaceReader 7 and Facial Action Coding System Scoring

Abstract: This study validates automated emotion and action unit (AU) coding applying FaceReader 7 to a dataset of standardized facial expressions of six basic emotions (Standardized and Motivated Facial Expressions of Emotion). Percentages of correctly and falsely classified expressions are reported. The validity of coding AUs is provided by correlations between the automated analysis and manual Facial Action Coding System (FACS) scoring for 20 AUs. On average 80% of the emotional facial expressions are correctly class… Show more

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Cited by 149 publications
(152 citation statements)
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References 27 publications
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“…Although this is a relatively novel method, it has been validated and used in multiple research settings. [38][39][40] After taking a seat on the exercise bicycle (both adenosine and exercise), the video-recordings started with 'baseline', approximately 1 minute before cardiac stress testing actually began, and served as the baseline measure of facial expression of anxiety. The three other time blocks during cardiac stress testing were 'start cardiac stress testing' when patients started exertion, 'maximal cardiac stress testing', when heart rate was at peak level (or at 2 minutes after adenosine injection), and 'recovery', when patients stopped exertion and slowly recovered.…”
Section: State Anxiety Measurementioning
confidence: 99%
“…Although this is a relatively novel method, it has been validated and used in multiple research settings. [38][39][40] After taking a seat on the exercise bicycle (both adenosine and exercise), the video-recordings started with 'baseline', approximately 1 minute before cardiac stress testing actually began, and served as the baseline measure of facial expression of anxiety. The three other time blocks during cardiac stress testing were 'start cardiac stress testing' when patients started exertion, 'maximal cardiac stress testing', when heart rate was at peak level (or at 2 minutes after adenosine injection), and 'recovery', when patients stopped exertion and slowly recovered.…”
Section: State Anxiety Measurementioning
confidence: 99%
“…While Facet was found to exceed human judges in classifying emotions on these standardized sets of static emotional portrayals, its accuracy dropped to 63% for dynamic stimuli depicting real-life facial expression imitations. A performance index of 80% was recently reported using FaceReader in the context of dynamic expressions that were enacted to also mimic a basic emotion display [39]. When testing the software CERT (a precursor of Facet) on subtle dynamic (i.e., non-prototypical) facial stimuli, Yitzhak et al [40] found that emotion classification accuracy for subtle expressions (21%) was significantly reduced in comparison to highly intense and stereotypical expressions (89%).…”
Section: Introductionmentioning
confidence: 99%
“…Clemson researchers observed that many participants smile excessively when being video recorded. Furthermore, individual physiognomy and resting facial expression influences the emotion coding process [71]. Calibration aids in reducing the influence of individual bias.…”
Section: Expression Bias Interpretation and Calibrationmentioning
confidence: 99%
“…Three validation studies on FaceReader showed that the software was accurate at predicting intended emotion 79%-89% of the time. Validation studies in the literature may give researchers confidence in FaceReader over other software [71,74].…”
Section: Software Influencementioning
confidence: 99%