Grey parrot numerical competence: a review

@article{Pepperberg2006GreyPN,
  title={Grey parrot numerical competence: a review},
  author={Irene M. Pepperberg},
  journal={Animal Cognition},
  year={2006},
  volume={9},
  pages={377-391}
}
  • I. Pepperberg
  • Published 15 August 2006
  • Psychology, Medicine
  • Animal Cognition
The extent to which humans and nonhumans share numerical competency is a matter of debate. Some researchers argue that nonhumans, lacking human language, possess only a simple understanding of small quantities, generally less than four. Animals that have, however, received some training in human communication systems might demonstrate abilities intermediate between those of untrained nonhumans and humans. Here I review data for a Grey parrot (Psittacus erithacus) that has been shown to quantify… 
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After re-reading Macphail’s (1987) essay “The Comparative Psychology of Intelligence” with all the associated commentaries, I was struck by how contemporary many of the arguments and
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References

SHOWING 1-10 OF 127 REFERENCES
Primate numerical competence: contributions toward understanding nonhuman cognition
TLDR
Overall, the archival literature on number-related skills and counting in nonhuman primates offers important implications for revising the authors' thinking about comparative neuroanatomy, cross-species (human/ape) cognitive similarities and differences, and the evolution of cognition represented by the primate continuum.
Number comprehension by a grey parrot (Psittacus erithacus), including a zero-like concept.
TLDR
A Grey parrot that was able to quantify 6 item sets using English labels and demonstrated knowledge of absence of quantity, using "none" to designate zero demonstrated numerical comprehension competence comparable to that of chimpanzees and very young children.
Use of numbers by a chimpanzee
TLDR
The present study demonstrates that the chimpanzee was able to describe the three attributes of the sample items and spontaneously organized the ‘word order’.
Numerical Cognition Without Words: Evidence from Amazonia
TLDR
Results of numerical tasks with varying cognitive demands show that numerical cognition is clearly affected by the lack of a counting system in the Pirahã tribe, suggesting an analog estimation process.
Numerical competence in animals: Definitional issues, current evidence, and a new research agenda.
Numerical competence is one of the many aspects of animal cognition that have enjoyed a resurgence of interest during the past decade. Evidence for numerical abilities in animals has followed a
Grey Parrot (Psittacus erithacus) numerical abilities: addition and further experiments on a zero-like concept.
  • I. Pepperberg
  • Medicine, Psychology
    Journal of comparative psychology
  • 2006
TLDR
His accuracy suggested that his addition abilities are comparable to those of nonhuman primates and young children, some limits as to his correlation of "none" and the concept of zero, and a possible counting-like strategy for the quantity 5.
The Development of numerical competence : animal and human models
Contents: Part I: Empirical Approaches to Counting (or Numerical Competence) in Animals. M. Rilling, Invisible Counting Animals: A History of Contributions from Comparative Psychology, Ethology, and
Development of Elementary Numerical Abilities: A Neuronal Model
TLDR
The computer simulations account for several phenomena in the numerical domain, including the distance effect and Fechner's law for numbers, and demonstrate that infants' numerosity detection abilities may be explained without assuming that infants can count.
Bootstrapping & the origin of concepts
beings create scienti1⁄2c theories, mathematics, literature, moral systems, and complex technology. And only humans have the capacity to acquire such culturally constructed knowledge in the normal
Subitizing: The role of figural patterns in the development of numerical concepts.
Whenever we hear a number word, we know, as Euclid already knew, that it refers to a conceptual unit that is itself composed of units. Under normal, everyday circumstances there is no problem about
...
1
2
3
4
5
...