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Dynamic facial trustworthiness perception in real-time social contexts
Haoming Qi1, Dongcheng He2,3
1School of Information Network Security, People's Public Security University of China, Beijing, China.
Frontiers in Psychology
|August 11, 2025
Summary
Facial trustworthiness perception involves dynamic brain activity, showing hemispheric asymmetry in observers during real-time social interactions. This suggests dynamic affective processing influences trust judgments beyond static facial cues.
Area of Science:
- Neuroscience
- Social Psychology
- Cognitive Science
Background:
- Facial trustworthiness perception research traditionally relies on static stimuli.
- Real-life social interactions are dynamic, and their neural underpinnings are less understood.
Purpose of the Study:
- To investigate the neural mechanisms of facial trustworthiness perception in a dynamic, real-time social context.
- To analyze electroencephalography (EEG) data during a deception game to understand observer trust judgments.
Main Methods:
- EEG data from observers judging player trustworthiness in a real-time deception game were analyzed.
- Examined behavioral data, event-related potentials, and interhemispheric EEG asymmetries (signal magnitude and phase).
Main Results:
- Significant trustworthiness effects on hemispheric asymmetry in centroparietal phase activity were observed from ~800 ms to 3000 ms post-stimulus.
- Frequency-based analysis indicated lateralized signal frequency drove this phase asymmetry.
Conclusions:
- Facial trustworthiness perception is associated with dynamic hemispheric lateralization.
- Dynamic affective processing in real-time social contexts modulates trustworthiness perception, contrasting with rapid perception from static stimuli.
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