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Discriminative Functions Of Schedule Stimuli And Memory: A Combination Of Schedule And Choice Procedures, D. Alan Stubbs, Susan J. Vautin, Howard M. Reid, Denis L. Delehanty
Discriminative Functions Of Schedule Stimuli And Memory: A Combination Of Schedule And Choice Procedures, D. Alan Stubbs, Susan J. Vautin, Howard M. Reid, Denis L. Delehanty
Psychology Faculty Scholarship
Pigeons responded under a combination brief-stimulus schedule and choice procedure. Normally, a fixed-interval schedule was in effect, where completion randomly produced either a brief stimulus or food. Intermittently, this schedule was interrupted by a choice arrangement. Two choice keys were lit, either a short or a long time since a prior event (food or stimulus). One choice response produced food if the time had been short, and the alternate response produced food if the time had been long. Across conditions, the duration of the fixed-interval schedule was varied, the stimuli that comprised the brief-stimulus operation were changed, and the stimuli …
Positive Conditioned Suppression: An Explanation In Terms Of Multiple And Concurrent Schedules, D. A. Stubbs, J. E. Hughes, S. L. Cohen
Positive Conditioned Suppression: An Explanation In Terms Of Multiple And Concurrent Schedules, D. A. Stubbs, J. E. Hughes, S. L. Cohen
Psychology Faculty Scholarship
Rats performed under a baseline variable-interval schedule of food presentation. A response-independent food schedule was then superimposed on the baseline schedule for different periods of time across different conditions. The response-independent schedule operated for the whole session in some conditions, intermittently for sixty second periods in some, and intermittently for ten-second periods in others. Under these latter two sets of conditions, the response-independent food schedule was stimulus correlated and alternated with the baseline schedule according to a multiple schedule. Response-independent food presentations always suppressed responding. The degree of suppression tended to increase the longer the period of response-independent food. Control …