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The generalized matching equation provides a good description of response allocation in concurrent schedules of positive reinforcement in nonhumans as well as in humans. The present experiment was conducted to further investigate the allocation of responding under concurrent schedules of negative reinforcement (i.e., timeouts from pressing a force cell) in humans. Each of three participants was exposed...
Rats were exposed to a concurrent-chains schedule in which reinforcer amounts, pre-reinforcer and post-reinforcer delays were varied between alternatives. Two independent variable-interval 60-s schedules were in effect during the initial links. Pre- and post-reinforcer delays were defined by fixed-time schedules. In one condition, rats chose between a larger reinforcer delayed by 0, 40, 80, or 120-s...
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