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Essay example - set size and search type effect on search time during visual search task
Pages 4 (1004 words)
‘Set-size and search type effect on search time during visual search task’ Introduction In visual search tasks, there are numerous factors that affect search time consumption on a variety of basis. A visual search task, including the number of objects to be recognized and synchronized consciously in an order, requires a timed recognitions and arraying that can be measured over a number of patterns…
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Feature Integration theory There are a number of researches with various stimuli, while most prevalent idea proposed for human visual search comes from A. Treisman (1980), who conducted a research illustrating Feature integration theory. It asserts that a visual search is faster in presence of dissimilar background and the number of distracters involved in background do not affect the time consumption in case of a feature search (a search that involves identification of a direct feature like color, shape, orientation or curvature). On the other hand, a conjunction search is affected widely with the number of distracters presented in the background. A conjunction search is defined as a search which does not involve a direct feature but a similarity of multiple features among the various objects. (For example ‘blue square’ has similarities with ‘blue triangle’ and ‘red square’.) Consequent of the propositions, feature integration theory illustrates that those two searches consists of different methodology for human visual search. Those methods are characterized as parallel searches and serial searches for feature and conjunctive patterns. ...
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