June 2004
Volume 4, Issue 8
Vision Sciences Society Annual Meeting Abstract  |   August 2004
Age-group differences in comparative visual search
Author Affiliations
  • Lawrence R. Gottlob
    University of Kentucky, USA
Journal of Vision August 2004, Vol.4, 642. doi:https://doi.org/10.1167/4.8.642
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      Lawrence R. Gottlob; Age-group differences in comparative visual search. Journal of Vision 2004;4(8):642. https://doi.org/10.1167/4.8.642.

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      © ARVO (1962-2015); The Authors (2016-present)

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In a comparative visual search experiment (Pomplun, Sichelschmidt, Wagner, Clermont, Rickheit, & Ritter, 2001), two halves of a display (12, 15, or 18 items per half) contained visual primitives of various shapes (circles, triangles, squares) and colors (green, blue, red). On 50% of trials, a single primitive differed between the two halves in form, color, or form/color; on the other 50% of trials, the two halves were identical. The observers' task was to make a yes/no decision to the presence of the different primitive. Eye movements and response latency and accuracy were measured. In other studies, age-group differences in many of the sub-components of this task (e. g. feature search, VSTM capacity, and memory for oculomotor search) have been found to be minimal. However, the comparative search task produced age-group decrements in various measures, including response time, numbers of fixations, numbers of target rechecks, and target fixation time. Older adults did not show strategy differences: saccade amplitude and various measures of scan-path efficiency were similar across age group. Results indicate that older adults experience decrements when it is necessary to coordinate multiple elementary processes.

NIA RO1 AG20860-03

Gottlob, L. R.(2004). Age-group differences in comparative visual search [Abstract]. Journal of Vision, 4( 8): 642, 642a, http://journalofvision.org/4/8/642/, doi:10.1167/4.8.642. [CrossRef]

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