dc.contributor.author |
Hailston, Kenneth W. |
en_US |
dc.date.accessioned |
2006-01-18T22:16:37Z |
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dc.date.accessioned |
2015-07-13T10:56:09Z |
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dc.date.available |
2006-01-18T22:16:37Z |
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dc.date.available |
2015-07-13T10:56:09Z |
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dc.date.issued |
2005-09-26 |
en_US |
dc.identifier.uri |
http://hdl.handle.net/1853/7498 |
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dc.identifier.uri |
http://evidence.thinkportal.org/handle/1853/7498 |
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dc.description.abstract |
The current study examined two means of reducing uncertainty in visual search: 1) visual relatedness of a prime to the target (a data-driven, bottom-up processing) and 2) expectancy (a top-down process based on the proportion of validly primed trials). The two processes were decoupled using a short and a long inter-stimulus interval (ISI) to examine their time course in visual search. Competing hypotheses were contrasted in order to determine whether relatedness is associated with iconic memory (Neely, 1977) or a longer lasting visual-structural implicit memory (Schacter and Cooper, 1995) and what role participant expectancy plays in visual search performance.
Twelve participants engaged in a discrimination task and a visual search task. The obtained results suggest that visual relatedness is a bottom-up process, probably mediated by a short-term iconic store that affects search performance early, but whose effects rapidly decay. They also suggest that expectancy is a top-down process that requires time to build up before it can affect visual search performance, but whose effects are more long lasting than visual relatedness. |
en_US |
dc.format.extent |
343659 bytes |
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dc.format.mimetype |
application/pdf |
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dc.language.iso |
en_US |
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dc.publisher |
Georgia Institute of Technology |
en_US |
dc.subject |
Relatedness |
en_US |
dc.subject |
Expectancy |
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dc.subject |
Visual search |
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dc.subject |
Visual attention |
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dc.subject |
Priming effects |
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dc.subject.lcsh |
Visual perception |
en_US |
dc.subject.lcsh |
Expectation (Psychology) |
en_US |
dc.subject.lcsh |
Relatedness (Psychology) |
en_US |
dc.subject.lcsh |
Visual discrimination |
en_US |
dc.title |
Effects of Priming Visual Relatedness and Expectancy on Visual Search Performance |
en_US |
dc.type |
Thesis |
en_US |
dc.description.degree |
M.S. |
en_US |
dc.contributor.department |
Psychology |
en_US |
dc.description.advisor |
Committee Chair: Davis, Elizabeth, T., Ph.D.; Committee Member: Corballis, Paul M., Ph.D.; Committee Member: Rogers, Wendy, A., Ph.D. |
en_US |