Abstract
Two groups received 20 nonrewarded (N) runway trials followed by either 20 small-reward (2 pellets) or 20 large-reward (20 pellets) trials (Groups N-2 and N-20, respectively). Groups receiving 40 small-reward (Group 2-2) or 40 large-reward (Group 20-20) trials were also included (N = 10 rats/group). An initial nonreward effect (INE) was obtained, with Groups N-2 and N-20 being more resistant to extinction than Groups 2-2 and 20-20, respectively. The size of the INE was independent of reward magnitude, and small-reward groups were more resistant to extinction than large-reward groups.
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This research was supported in part by National Institute of Child Health Development Grant 5R HD 04379-03 to E. J. Capaldi.
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Capaldi, E.J., Haggbloom, S.J. Influence of reward magnitude on the initial nonreward effect. Bull. Psychon. Soc. 3, 219–221 (1974). https://doi.org/10.3758/BF03333451
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DOI: https://doi.org/10.3758/BF03333451