scholarly journals The scaling of relative task difficulty across spatial, brightness, and form successive discrimination reversal (SDR) problems with Capuchin monkeys

1967 ◽  
Vol 9 (1) ◽  
pp. 1-2 ◽  
Author(s):  
Robert L. Gossette ◽  
Harvey R. Brown
Keyword(s):  
Task Difficulty ◽  
Successive Discrimination ◽  
Discrimination Reversal ◽  
Capuchin Monkeys

Successive Discrimination Reversal (SDR) Performances of American Alligators and American Crocodiles on a Spatial Task

1969 ◽  
Vol 28 (1) ◽  
pp. 63-67 ◽  
Author(s):  
Robert L. Gossette ◽  
Arthur Hombach
Keyword(s):  
Error Reduction ◽  
Spatial Task ◽  
Successive Discrimination ◽  
Discrimination Reversal ◽  
Spatial Discrimination ◽  
American Alligator ◽  
Reversal Task ◽  
American Crocodile ◽  
American Alligators

There is general agreement that birds and mammals, but not fish, can display error reduction on successive discrimination reversal (SDR) tasks. Reptiles, however, show error reduction on some but not other tasks. To provide further sampling of reptilian SDR performance, two species of crocodilians, the American alligator and the American crocodile, were tested on a spatial discrimination reversal task. Both species displayed error reduction, the alligator being appreciably inferior to the crocodile.

scholarly journals Discrimination Reversal Learning in Capuchin Monkeys (Cebus Apella)

2008 ◽  
Vol 58 (1) ◽  
pp. 3-14 ◽  
Author(s):  
Michael J. Beran ◽  
Emily D. Klein ◽  
Theodore A. Evans ◽  
Betty Chan ◽  
Timothy M. Flemming ◽  
...  
Keyword(s):  
Reversal Learning ◽  
Cebus Apella ◽  
Discrimination Reversal ◽  
Capuchin Monkeys

Variation in Magnitude of Negative Transfer on Successive Discrimination Reversal (SDR) Tasks across Species

1969 ◽  
Vol 29 (3) ◽  
pp. 803-811 ◽  
Author(s):  
Robert L. Gossette
Keyword(s):  
Negative Transfer ◽  
Two Dimensions ◽  
Successive Discrimination ◽  
Discrimination Reversal ◽  
Performance Differences ◽  
Species Performance

Attention is directed to the isolation of the dimensions of SDR methodology which make it sensitive to inter-species performance differences that have systematic taxonomical significance. Two dimensions in particular are indicated, inconstancy of reinforcement and the maximum opportunity for the generation of negative transfer. To determine if variation in magnitude of negative transfer is diagnostic of phyletic level, indices were studied across different phyletic levels of birds. More “primitive” birds developed greater magnitudes of negative transfer than more “advanced” birds. The relevance of these data to the retention decrement and the differential extinction hypotheses is examined.

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