University of Twente Student Theses
The Effect of Valence and Veracity on Facial Mimicry
Förster, Hannah (2024) The Effect of Valence and Veracity on Facial Mimicry.
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| Abstract: | The objective of this study was to examine how facial emotional mimicry varies in receivers of truthful or dishonest information and whether there is an impact of the valence of the message. For this, the study applied facial expression analysis software instead of relying on human coding. There was expected to be more facial mimicry of positive stories and truths compared to negative stories or lies based on the desire to affiliate with the counterpart. In a within-subjects experimental setup, 26 participants watched 16 videos, balanced for truthful and deceptive content, with either positive or negative valence. While watching the videos, their facial expressions were captured and categorised by the iMotions software as positive or negative for further analysis. After each video, participants judged the perceived veracity and rated the valence of the person and of the message. These expressions were compared with emotional expressions displayed by the people in the video stimuli to obtain mimicry scores. Results show that, when the story was true, there was more positive mimicry of negatively valenced stories, more mimicry of lies, and more mimicry of negative statements. Outcomes highlight the potential dangers of using automated software. |
| Item Type: | Essay (Bachelor) |
| Faculty: | BMS: Behavioural, Management and Social Sciences |
| Subject: | 77 psychology |
| Programme: | Psychology BSc (56604) |
| Link to this item: | https://purl.utwente.nl/essays/100435 |
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