Partial Reinforcement and Response Reversal in Chicks

Dutch, J.

doi:10.2466/pr0.1968.22.1.272

Cited by 2 publications

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References 3 publications

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“…Data were obtained with 12 Australorp chicks obtained at I day of age from the Wallaceville Animal Research Station, Wellington. A similar method was used with White Leghorn chicks (Dutch, 1968). The Ss were maintained in a temperaturecontrolled cage.type brooder, with food and water ad lib.…”

Section: A Runway For Chicksmentioning

confidence: 99%

A runway for chicks

Dutch

1968

Behav. Res. Meth. & Instru.

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Section: A Runway For Chicksmentioning

confidence: 99%

A runway for chicks

Dutch

1968

Behav. Res. Meth. & Instru.

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Partial reinforcement and response reversal in rats

Dutch

1969

Psychon Sci

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The following experiment was designed to extentl this finding in two ways: first, by using rats as Ss. and second. by incorporating extinction groups to obtain an indication of whcther or not the partial reinforcement effect eould be demonstrated at this level of training. METHOD Subjects were 32 experimentally-naive male Sprague-Dawley rats, aged approximately 110 days. Ouring the course of the experiment three Ss were discarded for failing to drink within 5 min during their initial trial.The apparatus was basically the same as that described in Dutch (1968). It consisted of a single straight nmway 30 x 6 x 8 in., with an 8 x 8-in. goal box at each end. Each goal box was equipped with a perspex guillotine dOOf. Two additional guillotine dOOfS were used to divide off the middle 6 in. of the runway so that it served as a start box. The S5 were placed into the start box through a trap door in the roof of the runway in a uniform manner. The runway was made of metal painted flat gray throughout, and had a perspex roof. The water holder was made out of wood painted flat gray anti was suspended from the end wall of the goal box at a height which prevented S from seeing whether it was loaded until he was directly above it. The reward was 80 mg of water.Three weeks be fa re the commencement of the experiment Ss were placed on a water deprivation schedule permitting 15 min access to water each 24 h. Food was ad lib.In the acquisition phase of the experiment one arm of the runway was blocked off by covering the appropriate start box door. In this way the acquisition phase consisted of forced trials. Ouring acquisition half the Ss in each group were forced to run to the left goal box, the other half were forced to run to the right goal box.Each S was given 25 acquisition trials over three days to the appropriate goal box. Reversal and extinction trials were begun on the fourth day, and continued at 10 trials per day until the appropriate criterion was reached.On Oay I of acquisition, all Ss received one rewarded goal box placemen t followed by five spaced rewarded trials.On Oays 2 and 3 of acquisition, Groups 100E (N = 6) and 100R (N = 8) received 10 spaced rewarded trials each day, al1d Groups 50E (N = 6) and 50R (N = 9) received 10 spaced trials each day rewarded on a 50'}6 FR schedule. All trials werc spaccd at approximately 8-min intervals. On all trials Ss were confined in the goal box for 5 sec before being returned to All Ss were given 10 trials per uay until they readlCll thc ir appropriate eriterion.The proceuure for extinction was the sanK' as for acquisition except that wakr was never prescnt in the holder. The criterion for extinction was a failurc to enkr the goal box within 2 min on 11 total of three trials. not necessarily consccutive.The procedure for rcversal was as folIows. S was placed in the ccntral start box, both doors were openeu simultaneously and Icft open so that S could rctrace until he enteretl eithcr goal box. That goal box door was then lowered and S was kept there for 5 sec. Both goal box es ...

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Partial Reinforcement and Response Reversal in Chicks

Cited by 2 publications

References 3 publications

A runway for chicks

A runway for chicks

Partial reinforcement and response reversal in rats

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