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Related Experiment Videos

Subitizing speed, subitizing range, counting speed, the Stroop effect, and aging: capacity differences and speed

Chandramallika Basak1, Paul Verhaeghen

  • 1Department of Psychology, Syracuse University, New York 13244-2340, USA. cbasak@mailbox.syr.edu

Psychology and Aging
|June 27, 2003
PubMed
Summary

Older adults show a smaller subitizing span, but reaction times for visual attention tasks remain consistent with age. This suggests a shrinking focus of attention, not slower processing.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience of Aging

Background:

  • Subitizing refers to the rapid, accurate enumeration of small sets of items.
  • Aging can impact various cognitive functions, including visual attention and processing speed.

Purpose of the Study:

  • To investigate age-related differences in visual attention, specifically in subitizing and counting.
  • To examine how aging affects susceptibility to Stroop interference.

Main Methods:

  • Reaction times were measured in younger and older adults for visual displays of 1-9 digits.
  • Trials included conditions with digit value matching set size and differing by one (Stroop interference).

Main Results:

  • Evidence of age differences in subitizing span (younger: 2.83, older: 2.07) was found.

Related Experiment Videos

  • After accounting for subitizing range, no age differences in subitizing or counting rates were observed.
  • No age differences in Stroop effect susceptibility were detected.

    • Conclusions:

    • Advancing age may lead to a reduced focus of attention span.
    • The speed of accessing information within the focus of attention appears to remain constant with age.