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Effects of distance on face recognition: implications for eyewitness identification
James Michael Lampinen1, William Blake Erickson, Kara N Moore
1Department of Psychological Science, University of Arkansas, Fayetteville, AR, USA, lampinen@uark.edu.
Psychonomic Bulletin & Review
|May 14, 2014
Summary
Witness identification accuracy decreases significantly with distance. This study shows that recognizing faces from afar impacts eyewitness memory and decision-making.
Area of Science:
- Cognitive Psychology
- Forensic Science
- Vision Science
Background:
- Eyewitness identification is crucial in legal proceedings.
- Limited research exists on facial recognition accuracy at varying distances.
- Real-world scenarios often involve viewing subjects from afar.
Purpose of the Study:
- To investigate the relationship between distance and eyewitness identification accuracy.
- To assess facial recognition capabilities under controlled, free-field conditions.
- To understand how distance impacts the ability to recognize strangers' faces.
Main Methods:
- Participants viewed live targets at outdoor distances ranging from 5 to 40 yards.
- Recognition memory was tested using photographs of targets and foils.
- Confidence ratings were collected on an 8-point scale.
Main Results:
- Increased distance was strongly correlated with decreased facial recognition accuracy.
- Longer viewing distances led to shifts in response bias.
- Performance degraded significantly as distance from the target increased.
Conclusions:
- Distance is a critical factor influencing eyewitness identification reliability.
- The findings have implications for understanding eyewitness testimony in legal contexts.
- Further research should explore mitigation strategies for distance-related accuracy issues.
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