Rats' extinction performance as a function of deprivation level during training and partial reinforcement.

1971 ◽  
Vol 75 (2) ◽  
pp. 317-323 ◽  
Author(s):  
David A. Leach
1968 ◽  
Vol 22 (3) ◽  
pp. 765-771 ◽  
Author(s):  
James E. Spivey ◽  
David T. Hess ◽  
James Klemic

3 groups of albino rats were given 96 acquisition trials in a runway. One group (C) was given consistent reinforcement, while the other 2 groups (PN, PR) received the same partial reinforcement pattern, RRNNRRNN, on each day. Following Trial 4 for Group PN and Trial 5 for Groups PR and C., Ss were given intertrial reinforcement. In extinction the groups were ordered PR, PN, C, with Group PR being most resistant to extinction. Taken in conjunction with the results of studies involving abbreviated training, the findings were interpreted as supporting the view that the same variables or processes influence extinction performance following both abbreviated and extended training. The results were further interpreted as supporting the modified aftereffects hypothesis.


1974 ◽  
Vol 34 (1) ◽  
pp. 107-117
Author(s):  
G. C. Jernstedt

College students made observing responses in a discrete-trial instrumental-conditioning situation. Intertrial intervals from 1 to 10 sec. were factorially combined with patterns of reinforcement involving different total numbers of non-reinforcements, numbers of successively occurring non-reinforcements, and numbers of non-reinforced—reinforced trial transitions. In agreement with previous studies with rats, Exp. 1 indicated that intertrial interval interacts with pattern of reinforcement and accounts for a large percentage of the total variance. Contrary to previous studies with rats, Exp. 2 indicated that the effects of intertrial interval with humans are due to more than just those intertrial intervals near a non-reinforced—reinforced trial transition. Though much of the basic human and animal partial-reinforcement data are similar, the theoretical accounts apparently should differ.


1966 ◽  
Vol 18 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Peter J. Mikulka ◽  
William B. Pavlik

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.


Infancy ◽  
2005 ◽  
Vol 8 (1) ◽  
pp. 63-80 ◽  
Author(s):  
Catherine Weir ◽  
Cynthia Toland ◽  
Rose Ann King ◽  
Lisa Maas Martin

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