Roles of salience and strategy in conjunction search |
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Authors: | Sobel Kenith V Cave Kyle R |
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Affiliation: | Department of Psychology, Vanderbilt University, Nashville, Tennessee 37240, USA. k.sobel@vanderbilt.edu |
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Abstract: | In some cases, the search for a conjunction target proceeds through the smaller group of elements in a display, whereas in others, search is limited to those elements that share a particular feature with the target. In 6 experiments, participants searched for a conjunction target among displays consisting of various proportions of 2 distractor types. Smaller-group search was more prevalent than target-feature search with denser displays and with features that were highly discriminable. Explicit instructions to limit search to a specific feature affected performance only when the discriminability of the guiding feature was much greater than the other target feature. Together, these experiments show that bottom-up factors have more influence in guiding conjunction searches than previously thought. |
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