Abstract
The relation between drinking and pellet delivery was examined in a rat that acquired polydipsia when it was exposed to a free fixed-interval (FFI) 50-sec food (Noyes 45-mg pellets) schedule. A distributional analysis of responding in the interpellet interval indicated that drinking, which was originally distributed equally throughout the interpellet interval, became concentrated predominantly as a postpellet event within the first FFI session. The redistribution of drinking as a postpellet event was followed by an increase in water consumption, with asymptotic water intake occurring by the fourth FFI session. These results indicated that schedule-induced polydipsia cannot be attributed to adventitious food reinforcement.
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Supported in part by Grants MH-08775 and MH-12025 from the National Institute of Mental Health, Robert W. Schaeffer, principal investigator.
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Schaeffer, R.W., Salzberg, C.L. Licking response distributions associated with the acquisition of schedule-induced polydipsia. Bull. Psychon. Soc. 2, 205–207 (1973). https://doi.org/10.3758/BF03329246
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DOI: https://doi.org/10.3758/BF03329246