scholarly journals Simple schedule and signal-key multiple schedule responding and behavioral contrast

1986 ◽  
Vol 24 (1) ◽  
pp. 88-90 ◽  
Author(s):  
Frances K. McSweeney ◽  
James D. Dougan ◽  
Valeri A. Farmer
Keyword(s):  
Multiple Schedule ◽  
Behavioral Contrast ◽  
Simple Schedule

Behavioral Contrast in Pigeons with Qualitatively Different Reinforcers

1979 ◽  
Vol 45 (2) ◽  
pp. 535-538 ◽  
Author(s):  
Donald L. Pingrey ◽  
Denis L. Delehanty ◽  
D. Alan Stubbs
Keyword(s):  
Multiple Schedule ◽  
Contrast Effect ◽  
Reinforcement Schedule ◽  
Behavioral Contrast ◽  
Positive Contrast ◽  
Response Rates ◽  
Positive Contrast Effect ◽  
Positive Behavioral Contrast ◽  
Extinction Component

Three white Carneaux pigeons were trained to respond on a mult VI 1-min. (milo reinforcement), VI 1-min. (pea reinforcement) schedule when each component was associated with a different key, feeder, and reinforcer. The experiment was divided into four phases. In Phases 1 and 3, baseline rates of responding were established. In experimental Phases 2 and 4, one component of the multiple schedule was changed to extinction. During the experimental phases, response rates decreased in the extinction component and increased in the unchanged component (positive behavioral contrast). The increase in responding in the unchanged component was greater when the more valued reinforcer was extinguished. These findings are very similar to those reported by Beninger and Kendall (1975) and extend the positive contrast effect to another species, pigeons.

Differential Multiple-Schedule Interactions in Rats

1976 ◽  
Vol 43 (3_suppl) ◽  
pp. 1167-1175
Author(s):  
James F. Mc Coy ◽  
Merrill E. Pratt ◽  
Alan R. Benson
Keyword(s):  
Multiple Schedule ◽  
Behavioral Contrast ◽  
Variable Interval ◽  
Baseline Training ◽  
Discriminative Stimuli ◽  
Free Operant ◽  
Regular Extinction ◽  
Multiple Variable ◽  
Positive Behavioral Contrast ◽  
Negative Induction

Three experiments examined multiple-schedule interactions in a free-operant paradigm for rats. In Exps. 1 and 2 three rats each and in Exp. 3 five rats were given extended multiple variable-interval baseline training before being shifted to multiple variable-interval extinction. Visual discriminative stimuli and regular extinction, which allowed nonreinforced responding, were used in Exps. 1 and 2, but auditory discriminative stimuli and retraction of the lever to prevent responding during extinction were used in Exp. 3. Positive behavioral contrast was observed in only one out of six rats in Exps. 1 and 2, while negative induction was observed in the other five subjects. However, contrast was observed at some point in training for all five subjects in Exp. 3. The differential multiple-schedule interactions were attributed to the introduction of an additional stimulus-reinforcer dependency with regard to the presence vs absence of the lever in Exp. 3. Results support an autoshaping or additivity account of behavioral contrast.

scholarly journals The relation of multiple-schedule behavioral contrast to deprivation, time in session, and within-session changes in responding

2004 ◽  
Vol 32 (2) ◽  
pp. 190-201 ◽  
Author(s):  
Frances K. McSweeney ◽  
Samantha Swindell ◽  
Eric S. Murphy ◽  
Benjamin P. Kowal
Keyword(s):  
Multiple Schedule ◽  
Behavioral Contrast

Simple and multiple schedule responding and behavioral contrast when pigeons press treadles

1986 ◽  
Vol 12 (3) ◽  
pp. 273-285 ◽  
Author(s):  
Frances K. McSweeney ◽  
James D. Dougan ◽  
Valeri A. Farmer
Keyword(s):  
Multiple Schedule ◽  
Behavioral Contrast
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