Response Patterning in the Operant-Conditioning Situation with Twenty-Four-Hour Intertrial Interval

1974 ◽  
Vol 38 (1) ◽  
pp. 231-234
Author(s):  
Stephen F. Davis ◽  
Bobby R. Brown
Keyword(s):  
Operant Conditioning ◽  
Intertrial Interval ◽  
Albino Rats ◽  
Operant Conditioning Chamber ◽  
Single Alternation ◽  
Conditioning Chamber ◽  
Conditioning Situation ◽  
Double Alternation ◽  
Sequential Hypothesis ◽  
Response Patterning

16 female, albino rats served as Ss in an investigation of performance on single and double-alternation sequences of reward-nonreward. Ss were run in an operant conditioning chamber with a 24-hr. intenrial interval. The results indicated that Ss receiving the single-alternation reward-nonreward sequence learned to respond appropriately, i.e., fast on reward days, slow on nonreward days, while Ss run under the double-alternation sequence did not exhibit appropriate responding. The results are seen as being supportive of Capaldi's sequential hypothesis.

Positive Incentive Contrast as a Function of Age and Length of Training in Rats

1977 ◽  
Vol 40 (2) ◽  
pp. 507-511
Author(s):  
Lawrence Weinstein
Keyword(s):  
Operant Conditioning ◽  
Positive Contrast ◽  
Positive Function ◽  
Albino Rats ◽  
Operant Conditioning Chamber ◽  
Conditioning Chamber ◽  
Contrast Effects ◽  
Incentive Contrast ◽  
Saccharine Solution ◽  
Old Rats

Exp. I demonstrated that positive incentive contrast effects in an operant conditioning chamber produced by an increase in the concentration of a saccharine solution in 30 180-day-old rats (older animals) are not found in 30 25-day-old rats (younger rats). Exp. II indicated that the probability of obtaining positive contrast with 60 male albino rats is a positive function of the length of the preshift period.

Single-Alternation Patterning with Sucrose Reinforcement and Varied Intertrial Intervals in the Rat

1979 ◽  
Vol 44 (3_suppl) ◽  
pp. 1311-1316
Author(s):  
Richard J. Nicholls ◽  
Victor Duch
Keyword(s):  
Classical Conditioning ◽  
Intertrial Interval ◽  
Short Interval ◽  
Single Alternation ◽  
Extinction Data ◽  
Sucrose Reward ◽  
Sucrose Reinforcement

Four groups of rats were given single-alternation training in a runway using sucrose reward and then extinguished. Only subjects given training with a short interval (10 sec.) between rewarded and nonrewarded trials and a long interval (40 min.) between nonrewarded and rewarded trials learned patterned responding. This duplicated the results found in classical conditioning with a similar manipulation. The acquisition and extinction data led to the conclusion that intertrial interval cues can be made more important than aftereffects in producing patterning with sucrose reinforcement.

Memory and Hypothesis in Solving Alternation Problems with Random Competition

1963 ◽  
Vol 12 (3) ◽  
pp. 783-797
Author(s):  
Eugene Linker ◽  
Bruce M. Ross
Keyword(s):  
Problem Solving ◽  
Sequence Classification ◽  
Single Alternation ◽  
Symbol Sequence ◽  
Double Alternation ◽  
Symbol Sequences ◽  
The Way

Three experiments are described dealing with solution attempts for single, double, and quadruple alternations in one or two of three possible symbol-sequence classification dimensions. Results showed that alternation length did not alter solution difficulty. The conclusion is formulated that the way in which Ss tackled alternation problems could not lead to solutions on the basis of “reading off” from memory or learning on an incremental basis. Therefore the concept of an hypothesis must be brought in to account for Ss with incomplete evidence often obtaining successful solutions and yet not differing in problem-solving approach from nonsolvers. There is also some indication that single alternation may be easier than double alternation when coding of symbol sequences is most straightforward, but there is no indication of any circumstances that favor double over quadruple alternation.

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