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Low-level orientation information for social evaluation in face images
Benjamin Balas1, M Quiridumbay Verdugo2
1Psychology Department, North Dakota State University, Dept. 2765, P.O Box 6050, Fargo, ND, 58108, USA. benjamin.balas@ndsu.edu.
Psychonomic Bulletin & Review
|February 7, 2018
Summary
Social judgments from faces rely on specific visual cues. Trustworthiness perception uses horizontal visual information, while competence and dominance do not, suggesting varied facial processing channels.
Area of Science:
- Cognitive psychology
- Neuroscience
- Computer vision
Background:
- Facial appearance influences social evaluations like trustworthiness and competence.
- Previous research linked social perceptions to high-level facial properties (e.g., attractiveness).
- Limited research connects social judgments to low-level visual features (e.g., spatial frequency, orientation).
Purpose of the Study:
- Investigate the role of low-level visual features in social evaluations of faces.
- Determine if social judgments depend on horizontal vs. vertical orientation energy, similar to face processing.
- Explore differential reliance on visual orientation channels for various social traits.
Main Methods:
- Analyzed social evaluations (trustworthiness, competence, dominance) of facial stimuli.
- Assessed the impact of manipulating horizontal and vertical orientation energy in faces.
- Compared orientation biases across different social judgment types.
Main Results:
- Trustworthiness judgments showed a significant bias towards horizontal orientation energy.
- Competence and dominance judgments did not exhibit this horizontal orientation bias.
- Findings suggest distinct visual processing pathways for different social evaluations.
Conclusions:
- Social perception from faces is not monolithic; it utilizes varied visual information channels.
- Trustworthiness relies on specific orientation-based visual cues, unlike competence or dominance.
- Early visual processing of facial appearance involves a multi-channel representation for social judgments.
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