Impact of age, redundancy, and perceptual noise on visual search.


Journal Article

We examined adult age differences in the impact of redundancy and perceptual noise during visual search. Using a two-choice, visual search task, subjects responded to letters presented in one to four corners of an imaginary display square. On each trial, one, two, or three instances of a given target letter were presented. In the target-plus-noise condition, all nontarget corners of the imaginary square were filled with distractor (i.e., noise) letters. In the target-only condition, all nontarget corners were left blank. The results indicated that older adults showed relatively greater redundancy benefits than the young adults for the target-plus-noise trials than for the target-only trials. These results are interpreted within an internal noise framework.

Full Text

Duke Authors

Cited Authors

  • Allen, PA; Madden, DJ; Groth, KE; Crozier, LC

Published Date

  • March 1992

Published In

Volume / Issue

  • 47 / 2

Start / End Page

  • P69 - P74

PubMed ID

  • 1538070

Pubmed Central ID

  • 1538070

International Standard Serial Number (ISSN)

  • 0022-1422

Digital Object Identifier (DOI)

  • 10.1093/geronj/47.2.p69


  • eng

Conference Location

  • United States