scholarly journals Discrimination with variable interval and continuous reinforcement schedules

1965 ◽  
Vol 3 (1-12) ◽  
pp. 299-300 ◽  
Author(s):  
Michael D. Zeiler ◽  
Aida E. Price
Keyword(s):  
Variable Interval ◽  
Reinforcement Schedules ◽  
Continuous Reinforcement

Schedule-Induced Polydipsia in the Rhesus Monkey

1966 ◽  
Vol 19 (3) ◽  
pp. 823-828 ◽  
Author(s):  
Charles R. Schuster ◽  
James H. Woods
Keyword(s):  
Water Intake ◽  
Rhesus Monkeys ◽  
Food Reinforcement ◽  
Fixed Ratio ◽  
Variable Interval ◽  
Interval Schedule ◽  
Reinforcement Schedules ◽  
Food Schedule ◽  
Continuous Reinforcement ◽  
Schedule Change

Four rhesus monkeys were allowed water, which was continuously available on a fixed-ratio 1 (FR-1) schedule of reinforcement, and food, which was available on differing reinforcement schedules. In Exp. 1, water intake greatly increased when the food schedule was changed from continuous reinforcement to a variable-interval schedule. In Exp. 2, when the same schedule change was employed but the number of food reinforcements was held constant, the water intake increased as in Exp. 1. In Exp. 3, a fixed-ratio 25 (FR-25) schedule of food reinforcement was employed in which a total of approximately 80 food pellets were divided among 4, 8, 16, or 24 periods per 24-hr. session. Water intake was related linearly to the increase in the number of food periods. Since water responding took place only after the FR-25 food periods, it was argued that the schedule-induced polydipsia observed was not due to accidental chaining.

Behavioral Effects of Microwave Reinforcement Schedules and Variations in Microwave Intensity on Albino Rats

1987 ◽  
Vol 65 (3) ◽  
pp. 787-795 ◽  
Author(s):  
William F. Vitulli ◽  
J. Ken Lambert ◽  
Stella W. Brown ◽  
Joseph M. Quinn
Keyword(s):  
Microwave Radiation ◽  
Thermal Environment ◽  
Fixed Ratio ◽  
Behavioral Effects ◽  
Interactive Effects ◽  
Ratio Schedule ◽  
Albino Rats ◽  
Reinforcement Schedules ◽  
Continuous Reinforcement ◽  
Exploratory Investigation

The objective of this exploratory investigation was to determine the interactive effects of fixed-ratio scheduling of microwave reinforcement in tandem with changes in microwave intensity. Nine albino rats were conditioned to regulate their thermal environment with microwave radiation while living in a Skinner (operant conditioning) Box in which the ambient temperature was about 27.13°F at the beginning of the session. Each rat obtained a 6-sec. exposure of microwave radiation on a fixed-ratio schedule of MW reinforcement, the values of which varied from FR-1 to FR-30. Intensities of MW radiation were 62.5 W, 125 W, 250 W, and 437.5 W. Sessions lasted for 8 to 9 hr. over an approximate 13-mo. period. The effects of the intensity of microwave reinforcement varied as a function of the ratio value of the schedule used. Continuous reinforcement (FR-1) produced the lowest over-all rates, whereas FR-15, and FR-25 produced the highest over-all rates. Relatively higher thermal-behavior rates occurred under 62.5 W than under any of the other MW intensities for FR-1, FR-15, and FR-25, whereas FR-10 and FR-30 ratios produced intermediate rates of thermal responding which were constant for all values of MW intensity. These data are explained in terms of interactive effects between the “local” satiation or deprivation properties of the MW intensity and the ratio requirements of the schedule of MW reinforcement.

Variability of Response Location during Regular and Partial Reinforcement

1968 ◽  
Vol 23 (3_suppl) ◽  
pp. 1023-1031 ◽  
Author(s):  
Douglas P. Ferraro ◽  
Kathleen H. Branch
Keyword(s):  
Variable Interval ◽  
Partial Reinforcement ◽  
Reinforcement Schedules ◽  
Response Location ◽  
Location Response

4 pigeons were trained to peck an 8-location response strip for grain reinforcement and given 14-session exposures to variable interval and regular reinforcement schedules. Regardless of the sequence of reinforcement schedules, partial reinforcemen produced greater response-location variability along the topographical response continuum than did regular reinforcement.

The Effect of Different Combinations of Continuous and Partial Reinforcement Schedules on Response Persistence in Mentally Handicapped Children

1988 ◽  
Vol 16 (1) ◽  
pp. 23-37 ◽  
Author(s):  
Kevin J. Tierney ◽  
Howard V. Smith
Keyword(s):  
Partial Reinforcement ◽  
Variable Ratio ◽  
Reinforcement Schedules ◽  
Mentally Handicapped ◽  
Continuous Reinforcement ◽  
Handicapped Children ◽  
Handicapped People ◽  
Different Shapes ◽  
Response Persistence

Two experiments investigated the effects on persistence of behaviour in extinction of different training procedures, using mentally handicapped boys who were trained to place objects of different shapes into matching holes in a box for sensory reinforcers. In Experiment 1 two subjects were given three training procedures: (i) a C-C procedure, consisting of 80 trials of continuous reinforcement (CRF); (ii)a P-P procedure, consisting of 80 trials of variable ratio reinforcement (VR5); and (iii) a C-P procedure, consisting of 40 trials on CRF followed by 40 on VR5. Extinction occurred most quickly after C-C training, next quickest after P-P training. In experiment 2 with four boys, C-P training of 160 trials of CRF, followed by 120 trials of VR5, produced quicker extinction than P-P training of 280 trials of VR5 reinforcement. The implications of these results for training persistent behaviour in mentally handicapped people are discussed.

Infant responding compared under conjugate- and continuous-reinforcement schedules.

2005 ◽  
Vol 12 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Michael Voltaire ◽  
Jacob L. Gewirtz ◽  
Martha Pelaez
Keyword(s):  
Reinforcement Schedules ◽  
Continuous Reinforcement

Neuroleptics and operant behavior: The anhedonia hypothesis

1982 ◽  
Vol 5 (1) ◽  
pp. 39-53 ◽  
Author(s):  
Roy A. Wise
Keyword(s):  
Brain Stimulation ◽  
Subjective Experience ◽  
Reinforcement Schedules ◽  
Neuroleptic Treatment ◽  
Continuous Reinforcement ◽  
Environmental Stimuli ◽  
Human Pathology ◽  
Response Capacity ◽  
And Performance ◽  
Goal Directed Behavior

AbstractNeuroleptic drugs disrupt the learning and performance of operant habits motivated by a variety of positive reinforcers, including food, water, brain stimulation, intravenous opiates, stimulants, and barbiturates. This disruption has been demonstrated in several kinds of experiments with doses that do not significantly limit normal response capacity. With continuous reinforcement neuroleptics gradually cause responding to cease, as in extinction or satiation. This pattern is not due to satiation, however, because it also occurs with nonsatiating reinforcement (such as saccharin or brain stimulation). Repeated tests with neuroleptics result in earlier and earlier response cessation reminiscent of the kind of decreased resistance to extinction caused by repeated tests without the expected reward. Indeed, withholding reward can have the same effect on responding under later neuroleptic treatment as prior experience with neuroleptics themselves; this suggests that there is a transfer of learning (really unlearning) from nonreward to neuroleptic conditions. These tests under continuous reinforcement schedules suggest that neuroleptics blunt the ability of reinforcers to sustain responding at doses which largely spare the ability of the animal to initiate responding. Animals trained under partial reinforcement, however, do not respond as well during neuroleptic testing as animals trained under continuous reinforcement. Thus, neuroleptics can also impair responding (though not response capacity) that is normally sustained by environmental stimuli (and associated expectancies) in the absence of the primary reinforcer. Neuroleptics also blunt the euphoric impact of amphetamine in humans. These data suggest that the most subtle and interesting effect of neuroleptics is a selective attenuation of motivational arousal which is (a) critical for goal-directed behavior, (b) normally induced by reinforcers and associated environmental stimuli, and (c) normally accompanied by the subjective experience of pleasure. Because these drugs are used to treat schizophrenia and because they cause parkinsonian-like side effects, this action has implications for a better understanding of human pathology as well as normal motivational processes.

Order of Partial and Continuous Reinforcement Schedules in Verbal Choice Behavior

1980 ◽  
Vol 46 (2) ◽  
pp. 635-639 ◽  
Author(s):  
Delphine Yelen
Keyword(s):  
Choice Behavior ◽  
Partial Reinforcement ◽  
Choice Task ◽  
Reinforcement Schedules ◽  
Continuous Reinforcement ◽  
Fourth Group

Four groups of 16 students were given 120 acquisition trials and 60 extinction trials in a verbal choice task. One group was given 120 continuously reinforced trials, a second group was given 120 partially reinforced trials, a third group was given 60 partially reinforced trials followed by 60 continuously reinforced trials, and a fourth group was given 60 continuously reinforced trials followed by 60 partially reinforced trials. Subjects given partial reinforcement after continuous reinforcement were as resistant to extinction as subjects given partial reinforcement only, and both groups were more resistant to extinction than subjects given continuous reinforcement only. Subjects trained with the partial-continuous order of reinforcement schedules, however, were no more resistant to extinction than subjects trained with continuous reinforcement only.

Deprivation Level, Competing Responses, and the Pre

1966 ◽  
Vol 18 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Peter J. Mikulka ◽  
William B. Pavlik
Keyword(s):  
Food Deprivation ◽  
Partial Reinforcement Effect ◽  
Deprivation Level ◽  
Straight Runway ◽  
Partial Reinforcement ◽  
Reinforcement Effect ◽  
Reinforcement Schedules ◽  
Running Speed ◽  
Continuous Reinforcement ◽  
Competing Responses

Rats were given 60 acquisition and 32 extinction trials in a straight runway. A 3 × 2 factorial design was employed, combining 3 levels of food deprivation with continuous and partial reinforcement schedules. The principal results were: (a) The magnitude of the partial reinforcement effect during extinction increased with increased food deprivation. (b) The major effects of deprivation during extinction were upon the performance of Ss on partial reinforcement; there was relatively little effect on the performance of continuous reinforcement Ss. (c) The frequency of competing responses differed among the experimental groups during both acquisition and extinction and generally was inversely related to running speed.

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