Complex Visual Concept in the Pigeon

  title={Complex Visual Concept in the Pigeon},
  author={Richard J. Herrnstein and Donald H. Loveland},
  pages={549 - 551}
Pigeons were trained to respond to the presence or absence of human beings in photographs. The precision of their performances and the ease with which the training was accomplished suggest greater powers of conceptualization than are ordinarily attributed to animals. 
Absence of perspective processing in the pigeon
Abstract Pigeons learn no more of the visual projections of a three dimensional object than of an abstract object. They lack the capacity to integrate the transformations of perspective.
Ability of Rhesus Monkeys to Discriminate Complex Spatial Arrangements of Visual Stimuli
Two rhesus monkeys were trained in an operant situation to perform for food and water in response to conceptualized stimuli which the animal had to derive from multidimensional stimulus conditions
Natural concepts in pigeons.
Pigeons learned to discriminate pictures of trees, bodies of water, or a particular person in three separate experiments, showing similar patterns of errors and correct discrimination.
Apparent movement detection in the pigeon.
  • R. K. Siegel
  • Psychology, Medicine
    Journal of the experimental analysis of behavior
  • 1970
Generalization gradients obtained on the dimension of speed indicated a broad range of movement detection and suggested formation of a "movement concept" in pigeons.
The pigeon's analysis of pictures
Pigeons were trained to identify Charlie Brown in “Peanuts” cartoons and were subsequently treated by the pigeons as equivalent to intact versions, suggesting that pigeons respond to complex line projections as collections of local features rather than as representations of three dimensional objects.
Same-different discriminations in the pigeon
Three pigeons were trained to observe five lighted keys and to peck whichever key displayed a color different from that of the other four keys. Their above-chance performances were maintained when a
Animal Cognition: Concepts from Apes to Bees
New research shows that honeybees can classify arrangements of two visual patterns according to their spatial configuration. Can bees learn relational concepts of 'above' and 'below'? And are the
High-order concept formation in the pigeon.
  • R. Lubow
  • Psychology, Medicine
    Journal of the experimental analysis of behavior
  • 1974
This study demonstrates that pigeons are capable of forming relatively high-order concepts and a discrimination to the two classes of photographs was obtained.
Visual classes and natural categories in the pigeon.
  • J. Cerella
  • Psychology, Medicine
    Journal of experimental psychology. Human perception and performance
  • 1979
After being trained on an oak leaf pattern, pigeons responded to other oak leaf patterns but not to leaf patterns of other species. Thus, graphic variation among the instances of a species is
Pigeon perception of letters of the alphabet.
  • D. Blough
  • Computer Science, Medicine
  • 1982
In a three-choice discrimination task three pigeons learned to distinguish each letter of the alphabet from all other letters, suggesting cross-task and cross-species generality in processes of letter discrimination.


American Seashells (Van Nostrand
  • 1964
The clams in this study were being used in the study of the haptenic properties of paralytic shellfish poison, a potent toxin produced by the References