Nonreinforced Trial Procedure for Probability Learning

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Science  04 Aug 1961:
Vol. 134, Issue 3475, pp. 328-329
DOI: 10.1126/science.134.3475.328


For rats in a T-maze, nonreinforced trials were interspersed with reinforced trials to insure that .67 of all reinforcements would be dispensed on the more frequently reinforced side. At asymptote , the proportion of responses to the more frequently reinforced side was .67.