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Murphy, Timothy Daniel 2014-12-15T19:46:25Z 2014-12-15T19:46:25Z 10000-01-01 1987 1987 This research compares two descriptions of visual selective attention. Spotlight descriptions claim that attention moves with a constant velocity (Tsal, 1983) and processes information in its path (Shulman, Remington, & McLean, 1979) while the zoom lens description (Eriksen & St. James, 1986) claims an inverse relation between the size of the attentional focus and processing efficiency. Two experiments utilizing target location precueing and a response competition paradigm varied the distance of attention movement, the presence of information in the path of the movement, and the distance of the information to the target. Results were consistent with the zoom lens description. Reaction time varied inversely with the distance of the information to the target and was unaffected by the distance of the attention movement and the path location of the information. Attention appears to move in a discrete manner and precueing effects reflect the time needed to locate the appropriate target. Made available in DSpace on 2014-12-15T19:46:25Z (GMT). No. of bitstreams: 1 8803144.pdf: 3143151 bytes, checksum: 77a71cce80a8ff2d18723225db361564 (MD5) Previous issue date: 1987 Embargo set by: Seth Robbins for item 69869 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 90 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987. http://hdl.handle.net/2142/69703 (UMI)AAI8803144 Psychology, Experimental Movement Characteristics of Visual Selective Attention text Psychology Psychology University of Illinois at Urbana-Champaign Dissertation Ph.D.