Stimulus Change Contemporaneous with Food Presentation Maintains Responding in the Presence of Free Food

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Science  07 Dec 1973:
Vol. 182, Issue 4116, pp. 1038-1039
DOI: 10.1126/science.182.4116.1038


The presence or absence of a change in the ambient stimulus conditions upon entry into a food source controlled the frequency with which pigeons choose one of two concurrently available grain sources. Such changes characteristically accompany the production of response-produced food and account for prior reports of responding to produce food in the presence of freely available food.