Near-optimal win-stay/lose-shift performance found on a simultaneous-spatial-discrimination, midsession-reversal task with short intertrial intervals is not maintained with visual discriminations

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.

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Error Reduction by Pigeons on a Spatial Successive Reversal Task under Conditions of Non-Correction

Psychological Reports ◽

10.2466/pr0.1966.18.2.367 ◽

1966 ◽

Vol 18 (2) ◽

pp. 367-370 ◽

Cited By ~ 5

Author(s):

Robert L. Gossette ◽

Harvey Cohen

Keyword(s):

Error Score ◽

Error Reduction ◽

Discrimination Reversal ◽

Spatial Discrimination ◽

Reversal Training ◽

Reversal Task ◽

Reversal Performance ◽

Successive Reversal ◽

Initial Peak

The performance of 5 pigeons on a successive spatial discrimination reversal task was studied over 29 reversals under conditions of non-correction. A significant reduction of errors occurred following an initial peak error score on the second reversal. Intra-problem error reduction was also significant, with errors remaining only during the initial trials of a session with continued reversal training. Terminal reversal performance approached one-trial reversal.

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The Midsession Reversal Task with Pigeons Does a Brief Delay Between Choice and Reinforcement Facilitate Reversal Learning?

Behavioural Processes ◽

10.1016/j.beproc.2020.104150 ◽

2020 ◽

Vol 177 ◽

pp. 104150 ◽

Cited By ~ 1

Author(s):

Megan A. Halloran ◽

Thomas R. Zentall

Keyword(s):

Reversal Learning ◽

Reversal Task ◽

Midsession Reversal

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Comparison of Spatial Discrimination in the Temporal and Nasal Sectors of the Monocular Visual Field

Perceptual and Motor Skills ◽

10.2466/pms.1965.20.3c.1037 ◽

1965 ◽

Vol 20 (3_suppl) ◽

pp. 1037-1045 ◽

Cited By ~ 4

Author(s):

Maria Wyke ◽

Stephan L. Chorover

Keyword(s):

College Students ◽

Visual Field ◽

Spatial Discrimination ◽

Normal Male ◽

Horizontal Meridian ◽

Visual Spatial ◽

Significant Difference ◽

Male College ◽

The Right ◽

Visual Discriminations

A study comparing monocular visual spatial discrimination in temporal and nasal half-fields was undertaken with the Tuebinger perimeter of Harms (1960). Twenty normal male college students performed a series of spatial visual discriminations in which “standard” and “comparison” stimuli were successively presented at varying distances from a fixation point along the mid-horizontal meridian. The results show that under conditions of relatively prolonged presentation of the test stimuli (1.0 sec.) monocular visual discriminations of this type are performed better with the left eye than with the right. The superiority of the left eye was maintained irrespective of whether nasal or temporal half-fields were tested. Furthermore, for a given eye, there was no significant difference in the performance of nasal and temporal half-fields.

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