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There's a time and a face: The time course of composite face processing
Carmen Lynch1, Xue Jun Cheng1, Daniel R Little1
1Melbourne School of Psychological Sciences, The University of Melbourne.
Journal of Experimental Psychology. Human Perception and Performance
|September 13, 2021
Summary
Holistic face processing emerges later than previously thought. This study reveals that recognizing faces holistically takes longer, especially for complex or difficult faces, impacting face recognition accuracy over time.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Faces are processed holistically, a phenomenon often studied using the composite face task.
- Inconsistent findings exist regarding holistic processing, depending on the experimental paradigm used.
Purpose of the Study:
- To investigate the temporal dynamics of holistic face processing.
- To reconcile discrepant findings in composite face task research by examining processing time.
Main Methods:
- Combined a composite face task with a signal-to-respond paradigm to manipulate decision time.
- Mapped accuracy changes over the processing time course.
- Fitted a speed-accuracy trade-off model to the data.
Main Results:
- Holistic processing emerged later than expected, around 400 ms for easy faces.
- For difficult-to-discriminate faces, holistic processing emerged even later, around 1000 ms.
- Processing time significantly influenced the manifestation of holistic effects.
Conclusions:
- Holistic face processing is a temporally extended process.
- The timing of holistic processing is dependent on face discriminability.
- This research clarifies the temporal characteristics of holistic face perception.
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