%0 Journal Article %1 plonsky1984 %A Plonsky, Mark %A Driscoll, Cynthia D. %A Warren, Donald A. %A Rosellini, Robert A. %D 1984 %J Animal Learning & Behavior %K dissertation food hardcopy polydipsia rats schedule-induced schedule-variability signaling %T Do random time schedules induce polydipsia in the rat? %V 12 %X Investigated the role of signals for pellet delivery in the development of polydipsia on random time schedules in 3 experiments involving a total of 33 male albino Holtzman rats. In Exp I, when an explicit signal or auditory stimulation from pellet dispenser operation was available to 12 Ss, polydipsia developed in all of the Ss. In Exp II, Ss receiving signaled pellet deliveries developed polydipsia more quickly than those receiving unsignaled pellet deliveries. Behavioral observations suggested that Ss showing polydipsia in the unsignal group may have been able to detect the operation of the pellet dispenser despite the authors' attempt to mask such cues. In Exp III, the information value of pellet-dispenser cues was degraded by the operation of an empty pellet dispenser during the interpellet interval. Under these conditions, almost all 9 Ss did not develop polydipsia, and the data suggest that for the few that did, pellet-dispenser cues were probably not responsible. The present findings suggest 2 conclusions: (1) In studies reporting polydipsia on random schedules, the Ss may have been inadvertently provided with cues for pellet availability. (2) Although Pavlovian conditioning may be an important modulator of adjunctive behavior, other factors must also be considered.

@article{plonsky1984, abstract = { Investigated the role of signals for pellet delivery in the development of polydipsia on random time schedules in 3 experiments involving a total of 33 male albino Holtzman rats. In Exp I, when an explicit signal or auditory stimulation from pellet dispenser operation was available to 12 Ss, polydipsia developed in all of the Ss. In Exp II, Ss receiving signaled pellet deliveries developed polydipsia more quickly than those receiving unsignaled pellet deliveries. Behavioral observations suggested that Ss showing polydipsia in the unsignal group may have been able to detect the operation of the pellet dispenser despite the authors' attempt to mask such cues. In Exp III, the information value of pellet-dispenser cues was degraded by the operation of an empty pellet dispenser during the interpellet interval. Under these conditions, almost all 9 Ss did not develop polydipsia, and the data suggest that for the few that did, pellet-dispenser cues were probably not responsible. The present findings suggest 2 conclusions: (1) In studies reporting polydipsia on random schedules, the Ss may have been inadvertently provided with cues for pellet availability. (2) Although Pavlovian conditioning may be an important modulator of adjunctive behavior, other factors must also be considered. }, added-at = {2007-01-19T22:03:25.000+0100}, author = {Plonsky, Mark and Driscoll, Cynthia D. and Warren, Donald A. and Rosellini, Robert A.}, biburl = {https://www.bibsonomy.org/bibtex/264efaf7faa180e9f3378de54bcdf0ee5/toby}, date-modified = {2007-01-09 21:51:54 -0600}, interhash = {04b510701362ca2fc26a84d4abb31cf1}, intrahash = {64efaf7faa180e9f3378de54bcdf0ee5}, journal = {Animal Learning & Behavior}, keywords = {dissertation food hardcopy polydipsia rats schedule-induced schedule-variability signaling}, timestamp = {2008-04-02T22:26:46.000+0200}, title = {Do random time schedules induce polydipsia in the rat?}, volume = 12, year = 1984 }