Date of Award

Fall 1992

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Psychology

Program/Concentration

Psychology

Committee Director

Raymond H. Kirby

Committee Member

Glynn D. Coates

Committee Member

Frederick G. Freeman

Call Number for Print

Special Collections LD4331.P65H47

Abstract

This research was conducted in two experiments. The first experiment assessed whether set size for the negative and positive sets affected reaction time during a visual scanning task. The effects of signal frequency on these relationships were assessed in the second experiment. It was hypothesized that as set size increased, reaction time would increase. In addition, as signal frequency increased, it was hypothesized that reaction time would decrease. In the first experiment, 12 groups of 10 subjects each were tested varying the number of stimuli for the positive and negative sets. The second experiment tested 18 groups by varying the levels of the positive and negative set size, as well as varying the proportion of the stimuli presented for each group. Reaction time served as the major dependent variable for each group of subjects. The results indicate that the size of the positive set does affect reaction time; however, the size of the negative set does not appear to affect reaction time. As the proportion of the stimuli presented in the positive set increased, reaction time was found to decrease.

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In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

DOI

10.25777/g574-9813

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