Movement Characteristics of Visual Selective Attention
Murphy, Timothy Daniel
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https://hdl.handle.net/2142/69703
Description
Title
Movement Characteristics of Visual Selective Attention
Author(s)
Murphy, Timothy Daniel
Issue Date
1987
Department of Study
Psychology
Discipline
Psychology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Psychology, Experimental
Abstract
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.
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