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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Aging Research

Background:

  • Older adults possess extensive world knowledge, influencing visual search.
  • Semantic information aids object localization, but overreliance on it is a concern.
  • Age-related attention allocation to scene elements requires further investigation.

Purpose of the Study:

  • To investigate age differences in attention allocation to semantic and visual saliency in real-world scenes.
  • To determine if older adults overrely on semantic information during scene perception.
  • To compare how young and older adults utilize semantic and visual cues for attention.

Main Methods:

  • Eye movements of younger (18-24) and older (66-82) adults were tracked while they described scenes.
  • Semantic informativeness was rated using meaning maps; visual saliency was measured using graph-based saliency.
  • Logistic mixed-effects modeling analyzed fixated locations, controlling for center bias.

Main Results:

  • Both semantic informativeness and visual saliency predicted fixated locations.
  • Semantic informativeness explained more unique variance than visual saliency.
  • Older adults fixated fewer informative locations than younger adults, but their fixations were still well-guided by informativeness.

Conclusions:

  • Young and older adults both employ semantic information to guide visual attention in scenes.
  • Older adults do not universally overrely on semantic information for scene perception.
  • Attention allocation strategies in older adults remain effective, though nuanced differences exist.