Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/38939
Title: Aging effects in cueing tasks as assessed by the ideal observer: peripheral cues.
Authors: Swan, Eleanor F.
Hutchinson, Claire V.
Everard, Mark
Shimozaki, Steven S.
First Published: 4-Feb-2015
Publisher: Association for Research in Vision and Ophthalmology (ARVO)
Citation: Journal of Vision, February 2015 15(2):5, 1–18
Abstract: Previous aging and cueing studies suggest that automatic orienting driven by peripheral cues is preserved with aging; however, inconsistencies can be found. One issue might be the use of response times (RT) to assess cueing effects (invalid RT--valid RT), which, in many cases, may not have clear quantitative predictions. We propose an ideal observer (IO) analysis of accuracy estimating participants' internal value of cue validity, or weight, which should equal the actual cue validity. The weight measures the use of information provided by the cue and is insensitive to variations in set size and difficulty, thus potentially providing advantages to RT. Older (n = 54) and younger (n = 58) participants performed a yes/no detection task of a two-dimensional (2-D) Gaussian (60 ms). Square peripheral precues (150 ms) indicated likely target locations (70% valid) across two or six locations (set sizes). For cueing effects, (valid--invalid hit rates), younger participants had set-size effects (larger cueing effects for set size 6), while older participants did not. The opposite pattern was found for weights (younger: no set-size effects, older: set-size effects) due to the IO predicting larger cueing effects for larger set sizes. Comparisons to the ideal weight (cue validity) suggested that older participants used the cue information effectively with set size 2 (as or more so than younger participants), but not with set size 6. These results suggest that attentional deficits from aging in peripheral cueing tasks may only arise as difficulty increases, such as larger set sizes.
DOI Link: 10.1167/15.2.5
ISSN: 1534-7362
eISSN: 1534-7362
Links: http://jov.arvojournals.org/article.aspx?articleid=2213269
http://hdl.handle.net/2381/38939
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: http://creativecommons.org/licenses/by-nc-nd/4.0/ Archived with reference to SHERPA/RoMEO and publisher website.
Description: Parts of this study have been presented previously at the Applied Vision Association Conference, May 2012, Cambridge, UK.
Appears in Collections:Published Articles, Dept. of Neuroscience, Psychology and Behaviour

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