Workload Capacity Across the Visual Field in Young and Older Adults (ICPSR 36054)

Version Date: Feb 24, 2015

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Principal Investigator(s):
Yusuke Yamani, Old Dominion University; Jason S. McCarley, Flinders University; Arthur F. Kramer, University of Illinois at Urbana-Champaign

https://doi.org/10.3886/ICPSR36054.v1

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Summary

Older adults often perform more poorly than young adults on measures of the functional field of view (FFOV), the area of the visual field from which task-relevant information can be extracted without head or eye movements. To test whether differences in parallel processing efficiency explain age-related changes in the FFOV, the current work measured the workload capacity coefficient, C(t)OR (Townsend and Nozawa, 1995), for targets appearing at various retinal eccentricities in young and older adults. Derived from analysis of response time distributions, C(t)OR gauges the efficiency with which observers process multiple items simultaneously relative to the rate at which they process items individually. Subjects performed a speeded target identification task, with targets appearing at varying retinal eccentricities and in the presence or absence of visual clutter. Contrary to expectations, both age groups showed higher levels of workload capacity in cluttered displays and at larger values of target eccentricity. Additionally, despite pronounced differences between age groups in RTs and error rates, older adults showed C(t)OR values similar to or higher than those of young adults across the visual field. Results suggest that age-related changes in the profile of the FFOV do not reflect inefficient parallel processing, but are more likely the result of visual crowding or generalized cognitive slowing in older adults.

Citation

Yamani, Yusuke, McCarley, Jason S., and Kramer, Arthur F. Workload Capacity Across the Visual Field in Young and Older Adults. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2015-02-24. https://doi.org/10.3886/ICPSR36054.v1

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Subject Terms

Geographic Coverage

Restrictions

This dataset is part of ICPSR's Archives of Scientific Psychology journal database. Users should contact the Editorial Office at the American Psychological Association for information on requesting data access.

Distributor(s)

Inter-university Consortium for Political and Social Research
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Time Period(s)

2012-08 -- 2013-05

Date of Collection

2012-08-15 -- 2013-05-15
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Universe

Young and older adults with normal or corrected-to-normal visual acuity and normal color perception.

Unit(s) of Observation

individual

Data Type(s)

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Original Release Date

2015-02-24

Version History

2018-02-15 The citation of this study may have changed due to the new version control system that has been implemented. The previous citation was:

  • Yamani, Yusuke, Jason S. McCarley, and Arthur F. Kramer. Workload Capacity Across the Visual Field in Young and Older Adults. ICPSR36054-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2015-02-24. http://doi.org/10.3886/ICPSR36054.v1

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Notes

  • This dataset is part of ICPSR's Archives of Scientific Psychology journal database. Users should contact the Editorial Office at the American Psychological Association for information on requesting data access.

  • The public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.

  • ICPSR usually offers files in multiple formats for researchers to be able to access data and documentation in formats that work well within their needs. If you have questions about the accessibility of materials distributed by ICPSR or require further assistance, please visit ICPSR’s Accessibility Center.

  • One or more files in this data collection have special restrictions. Restricted data files are not available for direct download from the website; click on the Restricted Data button to learn more.

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Archives of Scientific Psychology

This dataset is made available in connection to an article in Archives of Scientific Psychology, the first open-access, open-methods journal of the American Psychological Association (APA). Archiving and dissemination of this research is part of APA's commitment to collaborative data sharing.