Effects of histories of differential reinforcement of response rate on variable-interval responding

Article Abstract:

Three pigeons were studied to evaluate the effects of schedule histories of differential-reinforcement - high-rate and low-rate, on variable interval responding. Results show that history schedule has distinct effects on pigeons even with the presence of a unique discriminatory stimulus. Results also indicate that there is a strong schedule component on subsequent responding and that the effects of history is reduced with frequent subjection to several contingencies.

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Effects of experience on preference between forced and free choice

Article Abstract:

Pigeons were exposed to particular combinations of terminal links, in order to examine the preference between forced choice and free choice in concurrent-chain schedules of reinforcement. The data suggested that prior experience plays an important role in preferences than the difference between forced choice and free choice.

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Independence of terminal-link entry rate and immediacy in concurrent chains

Article Abstract:

Four pigeons are trained on a three-component multiple concurrent-chains procedure in which components differed only in terms of relative terminal-link entry rate. Regression analyses show that allowing sensitivity to immediacy to vary across components produced only trivial increases in variance accounted for.

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