Emotional Endorsement Measurement of Anger and Moral Disgust: A Combination of Facial and Non-Verbal Vocal Expressions

Anger and moral disgust, as the two most important moral emotions, have been studied for decades. However, a limited number of methods were used to measure these emotions, mostly by using similarity evaluation of facial expressions. In the current study, we introduced non-verbal vocalization of these emotions into the application of emotion endorsement measurement, combining with facial expression. 165 undergraduate students participated in the study. By recalling experienced anger or moral disgust event, participants completed a series of similarity evaluations of 36 facial expressions and 32 non-verbal vocal clips retrieved from Radboud Faces Database (RaFD) and non-verbal vocalization corpus of Sauter et. al (2010). Sets of factor analyses and internal consistency analyses were conducted. According to the results and the practicability in lab studies, we finally selected 6 facial expressions/vocal clips for each expression method per emotion respectively. These items will be used in further studies of the current project.