Behaviour of Humans in Concurrent Schedules Programmed on Spatially Separated Operanda

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Abstract
Six human subjects responded on either of two levers for monetary reinforcement in a continuous choice situation. Responses on one lever (lever A) were reinforced at different frequencies specified by five variable-interval schedules. Reinforcements for responding on the other lever (lever B) were delivered according to a variable-interval schedule of standard reinforcement frequency. Results indicated that absolute response rate on lever A increased, while absolute response rate on lever B decreased as a function of reinforcement frequency for lever A. In terms of preference, the data conformed closely to Baum's (1974) generalized matching equation. Performances departing from perfect matching were obtained in four cases, but these deviations were not systematic either in the direction of overmatching or undermatching.

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