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Thatcher's children: development and the Thatcher illusion
1School of Psychology, Cardiff University, PO Box 901, Cardiff CF10 3YG, Wales, UK. LewisMB@cardiff.ac.uk
Perception
|March 3, 2004
Summary
Young children and adults process facial features similarly, suggesting configural processing is available early. The Thatcher illusion effect in face recognition shows no age-related changes from childhood to adulthood.
Area of Science:
- Cognitive Psychology
- Developmental Psychology
- Neuroscience
Background:
- Adults exhibit a recognition disadvantage for inverted faces, attributed to reliance on configural processing, which is disrupted by inversion.
- Configural face processing may become more prominent with age, explaining developmental differences in inversion effects.
- The precise nature of configural versus featural processing in face recognition remains debated.
Purpose of the Study:
- To investigate the developmental trajectory of configural face encoding.
- To examine age-related differences in the Thatcher illusion, a measure sensitive to configural processing.
- To explore the interplay between featural and configural processing in face recognition development.
Main Methods:
- The Thatcher illusion was presented to participants aged 6 to 75 years.
- Participants viewed rotated facial images and reported the perceived switch from normal to grotesque.
- Performance was analyzed across different age groups to identify developmental trends.
Main Results:
- No significant effect of age was observed in the Thatcher illusion.
- Both young children and adults demonstrated the typical perceptual switch at approximately 72 degrees of rotation.
- This indicates that configural processing, as indexed by the Thatcher illusion, is present from a young age.
Conclusions:
- The findings challenge the notion that configural face processing develops significantly with age.
- Young children appear to utilize configural information in face recognition similarly to adults.
- The study suggests that the mechanisms underlying configural face encoding are established early in development.
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