Abstract
Twelve groups of six rats each were trained and extinguished on a discrete-trial barpress response under three levels of amount of reinforcement (1, 4, and 16 20-mg food pellets) and four levels of percentage of training reinforcement (25, 50, 75, and 100%). Factorial analyses of variance indicated that there was a linear relationship between acquisition scores and percentage of reinforcement, with no relative advantage for the partially reinforced groups over the 176 training trials, and that the usual runway result of greater resistance to extinction in partially reinforced groups with high amounts of reinforcement did not occur.
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