Successive discrimination-reversal training and multiple discrimination training in one-trial learning by chimpanzees.

1964 ◽  
Vol 58 (1) ◽  
pp. 153-156 ◽  
Author(s):  
Ronald J. Schusterman
Keyword(s):  
Discrimination Training ◽  
Successive Discrimination ◽  
Discrimination Reversal ◽  
Reversal Training

Transfer of a Discrimination and a Discrimination Reversal between Two Manipulandum-Defined Responses

1965 ◽  
Vol 16 (3_suppl) ◽  
pp. 1213-1221 ◽  
Author(s):  
Milton A. Trapold ◽  
Penelope B. Odom
Keyword(s):  
Discrimination Training ◽  
Variable Interval ◽  
Discrimination Reversal ◽  
Reversal Training ◽  
Free Operant ◽  
Mediational Process ◽  
Response Transfer ◽  
Overt Responding ◽  
Classically Conditioned ◽  
Free Operant Situation

An experiment was performed to determine the extent to which the effects of continuous reinforcement, variable interval reinforcement, discrimination training, and discrimination reversal training would transfer between a vertical and a horizontal bar-pressing response in the free operant situation. No transfer of continuous or variable interval reinforcement was found. However, both discrimination training and discrimination reversal training showed very appreciable amounts of inter-response transfer. These results are discussed in terms of a mediational process involving classically conditioned mediators which exert discriminative control over overt responding.

The Perception of Linear Gestalten by Rat and Monkey: Sensory Sensitivity or the Perception of Structure?

Perception ◽  
1975 ◽  
Vol 4 (4) ◽  
pp. 419-429 ◽  
Author(s):  
Brendan O McGonigle ◽  
Barry T Jones
Keyword(s):  
Discrimination Training ◽  
Squirrel Monkeys ◽  
Successive Discrimination ◽  
Continuous Line ◽  
Sensory Sensitivity

Four experiments on rats and squirrel monkeys are reported which show that the well-known transposition by animals to continuous from broken or interrupted line stimuli, first reported by Krechevsky, is attributable to their failure to transfer from simultaneous to successive discrimination of dot patterns. When given appropriate successive discrimination training, however, monkeys reverse their original preference and select dot instead of continuous line stimuli.

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.

An Experiment on Shape Discrimination and Signal Detection in Octopus

1970 ◽  
Vol 22 (2) ◽  
pp. 82-90 ◽  
Author(s):  
W. R. A. Muntz
Keyword(s):  
Signal Detection ◽  
Discrimination Training ◽  
Roc Curve ◽  
Signal Detection Theory ◽  
Successive Discrimination ◽  
General Level ◽  
Original Training ◽  
Shape Discrimination ◽  
A Value ◽  
Vertical Bars

Ten octopuses were trained to perform a successive discrimination between the two shapes shown in Figure I (a). After 7 days of training, when performance was significantly above chance, transfer tests were given with other shapes that were either rotations or parts of the original training shapes. At least six theories have been put forward to explain shape discrimination in the octopus, but none of these are capable of explaining the present results. The transfer tests suggest that the discrimination was performed in terms of component parts of the shapes (vertical bars projecting upwards or downwards), and their relationship to the shape as a whole (terminal or central). During successive discrimination training the general level of attack varies between animals, and fluctuates from day to day. As a result there are often more attacks on both the positive and negative shapes on some occasions than others, making it difficult to compare the levels of discrimination achieved. It is suggested that the concepts of signal detection theory can help overcome this difficulty. Attacks on the positive shape (“hits”) plotted against attacks on the negative shape (“false positives”) constitute an ROC curve from which a value of d′, independant of the general level of attack, can be obtained.

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