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Related Experiment Video

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Responses to Navon tasks differ across development and between tasks with differing attentional demands.

Su Morris1, Iroise Dumontheil2, Emily K Farran3

  • 1Department of Psychology and Human Development, UCL Institute of Education, University College London, 25 Woburn Square, London WC1H 0AA, UK; School of Psychology, University of Surrey, Guildford, Surrey GU2 7HX, UK.

Vision Research
|April 20, 2021
PubMed
Summary

Children

Keywords:
AttentionDevelopmentGlobal processingHierarchical stimulusLocal processingNavon figure

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Area of Science:

  • Cognitive psychology
  • Developmental psychology
  • Visual perception

Background:

  • Navon hierarchical stimuli assess global and local visual processing.
  • Developmental shifts in global vs. local processing are suggested by prior research.
  • Understanding these shifts is crucial for developmental cognitive science.

Purpose of the Study:

  • To investigate developmental changes in global and local visual processing in children.
  • To examine the influence of attentional demands on these processing styles.
  • To analyze longitudinal and cross-sectional data for robust developmental insights.

Main Methods:

  • 135 typically developing children (Years 1, 3, 5) completed various Navon tasks.
  • Stimulus design remained constant; tasks varied in attentional demands.
  • Linear mixed models analyzed combined longitudinal and cross-sectional data.

Main Results:

  • Global and local processing patterns differed by age group and task demands.
  • Evidence suggests a developmental shift from local to global processing advantage.
  • The timing of this transition varied significantly across different attentional tasks.

Conclusions:

  • Attentional task characteristics modulate responses to Navon stimuli.
  • Task demands can mask or alter the observed global/local processing advantage.
  • Developmental changes in visual processing are influenced by task context.