Abstract
Ss classified as quickly as possible stimuli back-projected one at a time on a small screen by pressing one of two levers in response to each stimulus, according to the levels of a single specified binary stimulus dimension. Stimuli were rectangles varying in height alone, in width alone, or in both dimensions, in either a correlated or an orthogonal fashion. Stimuli followed responses by a fixed interval of 82, 580, or 1,080 msec. Response time was longer when both dimensions varied orthogonally than when only one dimension varied, indicating that Ss were unable to avoid perceiving the rectangle figures as wholes. Repeated stimuli were responded to more quickly than stimuli which were different from the immediately preceding stimulus in all conditions. With orthogonally combined dimensions, response time to stimulus repetitions was lowest, increased when the stimulus changed while the response was repeated, and increased still further when both the stimulus and the response changed. Increasing the time interval between stimuli decreased response time for nonrepetitions, while response time for repetitions was relatively unaffected. The results were discussed in terms of two models of serial choice reaction time.
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This research was supported by Grant MH 14229 from the National Institute of Mental Health to Yale University, and this paper is based upon a doctoral dissertation presented to the faculty of Yale University. The author wishes to thank Irvin L. Child, Robert G. Crowder, L. Rowell Huesrnann, and Edwin W. Rubel for their helpful suggestions, and in particular W. R. Garner for his guidance throughout this research.
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Felfoldy, G.L. Repetition effects in choice reaction time to multidimensional stimuli. Perception & Psychophysics 15, 453–459 (1974). https://doi.org/10.3758/BF03199285
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DOI: https://doi.org/10.3758/BF03199285