scholarly journals Intertrial reward (ITR) and delay of reward: Effects on resistance to extinction

1969 ◽  
Vol 17 (5) ◽  
pp. 303-305 ◽  
Author(s):  
Lee E. Overstreet ◽  
Patrick E. Campbell
Keyword(s):  
Resistance To Extinction ◽  
Delay Of Reward ◽  
Reward Effects

Resistance to Extinction as a Function of the Number of Delay of Reward Trials

1962 ◽  
Vol 11 (1) ◽  
pp. 275-278 ◽  
Author(s):  
James Schoonard ◽  
Douglas H. Lawrence
Keyword(s):  
Resistance To Extinction ◽  
Delay Of Reward

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.

Effect of Interpolated Extinction after Partial Delay of Reward Training on Subsequent Reacquisition and Extinction

1968 ◽  
Vol 20 (4) ◽  
pp. 321-328 ◽  
Author(s):  
C. Thomas Surridge ◽  
Karen R. Mock ◽  
Abram Amsel
Keyword(s):  
Straight Runway ◽  
Extinction Training ◽  
The Other ◽  
Albino Rats ◽  
Extinction Period ◽  
Resistance To Extinction ◽  
The Third ◽  
Third Phase ◽  
Partial Delay ◽  
Delay Of Reward

Four groups of albino rats were run four trials a day in a straight runway for 44 days. On the first 15 days, two groups were given continuous immediate reward (IR) and two groups a 50 per cent, schedule of 30-sec. partial delay of reward (PDR). On the next 15 days, one IR group and one PDR group were extinguished, while the other IR and PDR groups remained on their original schedules. In the third phase, all groups received 8 days of training on IR. Finally, all groups were given 6 days of extinction training. In the first extinction, PDR produced greater resistance to extinction than IR. In the second extinction period, the PDR group which had previously been given extinction and the two IR groups extinguished relatively rapidly and at approximately the same rates, while the PDR group which had not been extinguished was significantly more resistant to extinction than the other three groups.

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