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Evidence for intact memory-guided attention in school-aged children.
Matthew L Dixon1, Philip David Zelazo, Eve De Rosa
1Department of Psychology, University of Toronto, 100 Saint George Street, Toronto, ON, Canada, M5S 3G3.
Developmental Science
|February 4, 2010
Summary
Children aged 5-9 demonstrate effective memory-guided attention, quickly learning visual scene regularities. This indicates the development of essential attentional networks in early childhood.
Area of Science:
- Cognitive Psychology
- Developmental Neuroscience
- Visual Attention
Background:
- Visual scenes possess statistical regularities that, with experience, guide spatial attention.
- Memory-guided attention, often studied using contextual cueing in adults, involves medial temporal lobe (MTL)-frontoparietal networks.
Purpose of the Study:
- To investigate the developmental emergence of memory-guided attention in school-aged children.
- To determine if children aged 5-9 utilize learned statistical regularities to guide visual search.
Main Methods:
- An age-appropriate contextual cueing paradigm was adapted for touchscreen use.
- Children searched for a target fish in both novel and repeated (old) visual displays.
- Performance was measured by search time in old versus new displays across trials.
Main Results:
- Children significantly improved search times in old displays compared to new displays over time.
- This performance improvement demonstrates intact memory-guided attention in 5- to 9-year-olds.
- Findings suggest the involvement of an MTL-frontoparietal network in this age group.
Conclusions:
- School-aged children possess functional memory-guided attention, leveraging visual statistical regularities.
- This study provides evidence for the early development of attentional networks crucial for efficient visual processing.
- Children exhibit a strong sensitivity to environmental structure, enhancing attentional efficiency with experience.
