Abstract
For 148 trials, human Ss predicted which of two stimulus lights would occur. During the first 112 trials each light occurred 56 times. For one group the light-sequence run structure consisted almost entirely of runs of Length 1 or 2. For a second group the run lengths were uniformly distributed from 1 to 7. Only the left light occurred during the last 36 trials. The proportion of Ss who predicted “right” on the extinction trials was initially low for the long run group, this group extinguished slowly. The short run group started higher but dropped to zero rapidly.
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References
RESTLE, F. Psychology of choice and judgment. New York: Wiley, 1961.
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This paper is based on work submitted to the University of Illinois in partial fulfillment of the requirements for the Ph.D. degree. The author is particularly grateful to Dr. Raymond W. Frankmann, Mr. Scott Krueger, and Dr. Lawrence Stolurow for their kind assistance in this endeavor. The IBM 1710 Control System at the Training Research Laboratory of the University of Illinois was utilized in the execution of this study. This system is supported by funds from the Office of Naval Research (ONR), from the Advanced Research Projects Agency (ARPA), and from the National Defense Education Act (NDEA).
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Hunter, J.E. Extinction as a function of run structure in two choice human learning. Psychon Sci 14, 275–276 (1969). https://doi.org/10.3758/BF03329120
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DOI: https://doi.org/10.3758/BF03329120