Discrimination of Rapidly Changing Texture Stimuli by Pigeons

Cook, Robert G.; Cavoto, Brian R.; Katz, Jeff; Cavoto, Kimberley K.

doi:10.1037/e537272012-136

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the 90 experimental sessions, the pigeons generally responded quite accurately on Same trials regardless of their duration (100 ms = 65%, 500 ms = 87%, 1000 ms = 90%, 2000 ms = 91%), whereas performance on Different trials (color, shape, and redundant combined) systematically increased with increasing duration (100 ms = 46%, 500 ms = 64%, 1000 ms = 72%, 2000 ms = 77%). For reasons perhaps related to further experience, the size of the asymmetry was somewhat reduced, but in the same general direction as found in Cook, Blondeau, et al(1995) results.…”

Section: Resultssupporting

confidence: 74%

“…Of particular relevance to the current discussion is a subsequent unpublished experiment (Cook, Blondeau, Cavoto, & Katz, 1995) that involved manipulating the texture display's presentation duration. This experiment revealed an asymmetry in the pigeons' processing of these types of Same and Different displays, an asymmetry similar to that observed when the delay length is varied in the food and no-food discriminations discussed previously.…”

Section: Extension To Same-different Texture Discriminationsmentioning

confidence: 99%

See 1 more Smart Citation

Same–different texture discrimination in pigeons: Testing competing models of discrimination and stimulus integration.

Cook¹,

Wixted²

1997

Journal of Experimental Psychology: Animal Behavior Processes

Self Cite

View full text Add to dashboard Cite

The choice behavior of 6 pigeons performing a mulltidimensional same-different texture discrimination was examined. On each trial, they had to choose among 2 choice hoppers depending on whether a color, shape, or redundant (color and shape) target signal was present or not in a textured stimulus. Receiver operating characteristic (ROC) curves were produced by variations in the priori signal presentation probabilities across conditions. Quantitative analyses of these ROC curves were used to evaluate different competing theories of discrimination (signal detection vs. high-threshold-default response models) and information integration (independent observations, additive integration, unidimensional models). The results suggested the structure of the pigeons' choice behavior in this same-different discrimination was best described by an unequal variance signal detection model involving a unidimensional evidence variable (e.g., degree of difference).

show abstract

Section: Resultssupporting

confidence: 74%

Section: Extension To Same-different Texture Discriminationsmentioning

confidence: 99%

Same–different texture discrimination in pigeons: Testing competing models of discrimination and stimulus integration.

Cook¹,

Wixted²

1997

Journal of Experimental Psychology: Animal Behavior Processes

Self Cite

View full text Add to dashboard Cite

show abstract

“…Review of the birds' pecking behavior revealed no systematic differences across displays that we could identify. More persuasive, we subsequently eliminated entirely the target-directed contingency with these birds, presenting these same stimuli at durations as short as 500 ms and with nondirected FRs as low as 1 (Cook, Blondeau, Cavoto, & Katz, 1995). Despite the very limited opportunities to respond to the displays in these later studies, the birds continued to accurately perform the discrimination, providing clear evidence that such response-based considerations were not critical to the birds' performance of the task.…”

Section: Discussionmentioning

confidence: 99%

Same-different texture discrimination and concept learning by pigeons.

Cook¹,

Cavoto²,

Cavoto³

1995

Journal of Experimental Psychology: Animal Behavior Processes

Self Cite

View full text Add to dashboard Cite

The acquisition and transfer of a "same-different" conditional discrimination using multidimensional visual texture stimuli was investigated in pigeons. Using a choice task, 4 pigeons were reinforced for discriminating different displays, created from aggregated differences in element color or shape, from uniform displays, in which all elements were identical. Discrimination of these 2 display types was readily acquired by the pigeons when they were required to locate and peck the contrasting target region of the different displays. The pigeons showed high levels of discrimination transfer to novel texture stimuli both during acquisition and in 2 subsequent transfer tests. The results suggest that pigeons may be able to learn a generalized same-different concept when promoted by the use of large numbers of multielement stimuli during training.Concepts are an essential part of human cognition, intelligence, and expression. With the growing interest in the cognitive abilities of nonhuman animals, a natural question is to what extent do animals use concepts in guiding their behavior (Herrnstein, 1990). Over the last 30 years, for instance, researchers have established abundant evidence for the formation and use of visually based object concepts by pigeons (Herrnstein & Loveland, 1964;Herrnstein, Loveland, & Cable, 1976;Wasserman, Kiedinger, & Bhatt, 1988). However, evidence for the use of more abstract concepts by pigeons, such as generalized "matching," "oddity," or "same-different" discriminations, has been far more difficult to obtain.Research on abstract concept learning in pigeons has for the most part focused on whether pigeons learn generalized matching or oddity rules in matching-to-sample and oddityfrom-sample discriminations. Although many studies have failed to find evidence of concept-based transfer in such conditional discriminations (Berryman, Cumming, Cohen,

show abstract

Discrimination of Rapidly Changing Texture Stimuli by Pigeons

Cited by 2 publications

References 0 publications

Same–different texture discrimination in pigeons: Testing competing models of discrimination and stimulus integration.

Same–different texture discrimination in pigeons: Testing competing models of discrimination and stimulus integration.

Same-different texture discrimination and concept learning by pigeons.

Contact Info

Product

Resources

About