Differential effects of opioid and nonop
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Mitchell Picker; Linda A. Dykstra
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Article
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1988
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Springer
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English
โ 710 KB
Under the fixed-consecutive-number schedule (FCN), pigeons were reinforced for responding eight or more times on one response key (work key), and then responding once on a second response key. In one component of this schedule, an external stimulus signalled the completion of the response requiremen