Abstract
Two experiments were conducted to test a buffer model of response selection. Subjects reacted to the onset of one of six possible visual stimuli by pressing either a left- or a right-hand key. Two stimuli were assigned to one key Itwo-item set) and four stimuli were assigned to the other key flour-item set). An irrelevant monaural tone accompanied the visual stimulus in Experiment 1 but not in Experiment 2. Results of Experiment 1 showed that reactions were faster when the location of the tone corresponded with the response than when it did not, and the difference between these corresponding and noncorresponding conditions was greater for the two-item set than for the four-item set. Results supported the notion that the response selection process involved a serial self-terminating search of response buffers and that the tone determined the buffer searched first. In both experiments, reactions were faster to stimuli from the twoitem set than to stimuli from the four-item set
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1. Acosta, E., Jr., & Hinrichs, J. V.Probability effects m choice reaction time: Stimulus, response, or S-R association frequency? Paper presented at the meeting of the Midwestern Psychological Association, Chicago, May 1977.
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A pilot study for this article was submitted by C. L. Connelly as an honors thesis under the direction of J. R. Simon at the University of Iowa.
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Mewaldt, S.P., Connelly, C.L. & Simon, J.R. Response selection in choice reaction time: Test of a buffer model. Memory & Cognition 8, 606–611 (1980). https://doi.org/10.3758/BF03213780
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DOI: https://doi.org/10.3758/BF03213780