Effects of a Limited Hold on Changeovers Maintained by Concurrent Interval Schedules of Reinforcement

1978 ◽  
Vol 28 (3) ◽  
pp. 445-453 ◽  
Author(s):  
William Newby ◽  
John Memmott ◽  
Stephen B. Kendall
Keyword(s):  
Schedules Of Reinforcement ◽  
Limited Hold

Steady State Generalization following Testing with Different Inter-Probe-Test Intervals

1971 ◽  
Vol 33 (3_suppl) ◽  
pp. 1283-1288 ◽  
Author(s):  
William R. Sewell ◽  
Theodore J. Newsom ◽  
Toby S. Altfield ◽  
Byron O. Garner ◽  
James F. Mc Coy ◽  
...  
Keyword(s):  
Steady State ◽  
Discrimination Training ◽  
Variable Interval ◽  
Discrimination Performance ◽  
Fixed Interval ◽  
Schedules Of Reinforcement ◽  
Testing Technique ◽  
Limited Hold ◽  
Probe Test

Rats received discrimination training, wherein the S+ was a light-on (100 ft-c) and the S— was a light-off (0 ft-c). The schedules of reinforcement during S+ were a fixed-interval 30-sec. schedule with a limited hold of 5-sec. for two rats and a variable interval 30-sec. schedule for 3 Ss. After discrimination performance had stabilized, a probe-testing technique was used to test for generalization to three logarithmically arranged test stimuli (1, 25, and 50 ft-c). Tests were conducted with 5- and 2-day intertest intervals. The results indicated no difference in gradient shape after testing with 5- or 2-day intertest intervals. It was concluded that repeated probe testing for generalization virtually eliminates cumulative extinction effects that may distort gradient shapes.

Understanding Value and Time in Static and Changing Schedules of Reinforcement

2010 ◽  
Author(s):  
Nicholas Commons-Miller ◽  
Michael Commons ◽  
Robin Gane-McCalla ◽  
Alex Pekker ◽  
Michael Woodford
Keyword(s):  
Schedules Of Reinforcement

Effects of Frequency and Specificity of Information Feedback on Acquisition and Extinction of a Positioning Task

1972 ◽  
Vol 34 (2) ◽  
pp. 567-572 ◽  
Author(s):  
Inga S. Baird ◽  
Glenn H. Hughes
Keyword(s):  
Partial Information ◽  
Fixed Ratio ◽  
Information Feedback ◽  
Schedules Of Reinforcement ◽  
Coarse Scale ◽  
Resistance To Extinction ◽  
Facilitated Learning

An experiment designed to specify the process similarities of information feedback and reinforcement and to note the interaction of 2 major feedback variables on a simple positioning task. 80 students were randomly divided into 4 groups receiving either 25, 50, 75, or 100% schedules of feedback, analogous to fixed-ratio schedules of reinforcement. The 4 groups were further divided into 2 subgroups that differed in terms of specificity of feedback. Results indicated that when all Ss were provided the same number of feedbacks, the groups did not differ during acquisition. Groups with partial information feedback demonstrated greater resistance to extinction. The coarse-scale treatment facilitated learning but had no effect during extinction. There was no interaction between frequency and specificity of information.

"Progressive ratio schedules of reinforcement": Correction to Killeen et al. (2009).

2009 ◽  
Vol 35 (2) ◽  
pp. 152-152
Author(s):  
Peter R. Killeen ◽  
Diana Posadas-Sanchez ◽  
Espen Borgå Johansen ◽  
Eric A. Thrailkill
Keyword(s):  
Progressive Ratio ◽  
Schedules Of Reinforcement

Operant Conditioning of Virginia Opossum

1970 ◽  
Vol 26 (1) ◽  
pp. 83-86 ◽  
Author(s):  
A. L. Cone ◽  
Donna M. Cone
Keyword(s):  
Operant Conditioning ◽  
Lever Press ◽  
Fixed Ratio ◽  
Fixed Interval ◽  
Response Style ◽  
Water Reinforcement ◽  
Deprivation Schedule ◽  
Limited Hold ◽  
Virginia Opossum

Laboratory-raised Virginia opossum have been found to readily acquire a lever-press response for water reinforcement. Fixed ratio behavior is comparable to that observed in other species. Fixed interval behavior, however, tends to move fairly rapidly toward an economical response style in which very few responses are emitted per reinforcement. Neither introduction of limited hold procedures nor lengthening of the deprivation schedule had any effect upon the FI responding.

Response-Reinforcer Relationships in Variable Delay and Non-Contingent Schedules of Reinforcement

1973 ◽  
Vol 33 (2) ◽  
pp. 627-631 ◽  
Author(s):  
Gerald D. Lachter
Keyword(s):  
Multiple Schedule ◽  
Pause Duration ◽  
Interval Schedule ◽  
Variable Delay ◽  
Random Interval ◽  
Schedules Of Reinforcement ◽  
Schedule Of Reinforcement ◽  
Delay Component

Following 30 sessions of training on a 60-sec. random-interval schedule of reinforcement, 2 pigeons were exposed to a multiple schedule containing non-contingent and variable delay components that provided equal frequencies of reinforcement. The introduction of the multiple schedule resulted in decreased response rare in both components, with a higher rate maintained under the variable delay. Post-reinforcement pauses were systematically increased during the non-contingent schedule, but no systematic increases in pause duration were noted for the variable delay component.

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