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oai:www.ideals.illinois.edu:2142/23327 2023-07-10 col_2142_5131 col_2142_11614 com_2142_5130 com_2142_11613 com_2142_8903

Eriksen, Charles W. Webb, Jayson M. 2011-05-07T14:10:12Z 2011-05-07T14:10:12Z 10000-01-01 1991 Treisman's Feature Integration Theory and Cave and Wolfe's Guided Search Model are currently the two most prominent and widely accepted theories of visual search. Each accounts for data in a variety of paradigms but it appears that the principal theoretical position of each, that individual attributes of objects independently influence the efficiency of visual search for their conjunctions, needs qualification. This paper proposes two modes of visual search, one in which attributes act independently to guide focal attention and another in which attributes interact in guiding focal attention. Evidence for attribute interaction is found in three different experiments. In experiment 1, search for conjunctions of color and size were faster than for either single attribute alone and faster than could be predicted from a statistical facilitation from two independent contributions to visual search efficiency. Experiment 2 showed how field effects (target-distractor similarity and distractor heterogeneity) differ depending on whether attributes are predicted to interact or act independently. Experiment 3 further examined the effect of target-distractor similarity, showing a difference from predictions made by models of attribute independence. Made available in DSpace on 2011-05-07T14:10:12Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9124503.pdf: 1903984 bytes, checksum: 9a9b164ee3006b90b2e27caf60c72935 (MD5) Previous issue date: 1991 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:03:43Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:30:23-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9124503 (UMI)AAI9124503 http://hdl.handle.net/2142/23327 eng Copyright 1991 Webb, Jayson M. Psychology, Experimental Two processing modes in visual search text Psychology Psychology University of Illinois at Urbana-Champaign Dissertation Ph.D.