scholarly journals Some effects of reward schedule and confinement duration upon patterning and resistance to extinction in the rat

1971 ◽  
Vol 25 (5) ◽  
pp. 309-311
Author(s):  
Charles M. Crumbaugh ◽  
Patrick E. Campbell
Keyword(s):  
Reward Schedule ◽  
Resistance To Extinction

Magnitude of Immediate Reward in Partially Delayed Reward: Effects on Acquisition and Extinction

1970 ◽  
Vol 26 (2) ◽  
pp. 495-500
Author(s):  
Patrick E. Campbell ◽  
George M. Batsch ◽  
Kim McNabb ◽  
Stephen B. Knouse
Keyword(s):  
Small Reward ◽  
Reward Schedule ◽  
Resistance To Extinction ◽  
Statistical Reliability ◽  
Delayed Reward ◽  
Reward Effects

30 rats were trained in a runway for 16 days at 5 trials a day. During acquisition (10 days) Ss were trained on an irregular 50% partially delayed reward schedule. The duration of delay was 30 sec. and 2 pellets of reward were given on all delayed trials. The magnitude of immediate reward was varied over three levels (2, 10, 24 pellets) as a between-groups factor. Although the larger rewards developed somewhat faster acquisition speeds than the small reward the results did not reach statistical reliability. During extinction, however, the larger magnitudes of reward significantly increased resistance to extinction. These results were discussed in terms of aftereffects, frustration, and dissonance theories of extinction.

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