Abstract
Forty rats were trained in a runway under a single-alternation partially delayed reward schedule. The trial sequence was either D-I or I-D during training and D-D, D-I, I-D, or I-I during extinction. During training, the Ss learned to run rapidly on I trials and slowly on D trials. During extinction the D-I training sequence resulted in greater resistance to extinction than I-D, but only on the second daily trial The extinction speeds were also inversely related to percentage of delay confinement in extinction.
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This research was partially supported by Grant No. 8469 from Southern Methodist University and the National Science Foundation, and by Grant No. 5T1 NB-5362-05 from the National Institute of Neurological Disease and Blindness to the Bureau of Child Research, Lawrence, Kansas. The study was conducted according to the APA statement of “Principles for the care and use of animals,” June 26, 1968.
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Campbell, P.E. Sequences of delayed reward and extinction confinement: Effects on pattern running and extinction performance. Psychon Sci 17, 34–35 (1969). https://doi.org/10.3758/BF03329154
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DOI: https://doi.org/10.3758/BF03329154