p. 76—86.

9. Boysen S.T., Hallberg K.I. 2001. Primate numerical competence: contributions towards understanding nonhuman cognition. Cognitive Science, V. 24, N3, p. 423—443.

10. Brannon E.M., Terrace H.S. 1998. Ordering of the Numerosities 1 to 9 by Monkeys. Science, V. 282, p. 746—749.

11. Capaldi E.J., Miller D.J. 1988. Counting in rats: Its functional significance and the independent cognitive processes that constitute it. J. Exp. Psychol.: Anim. Behav. Proc., V. 14, p. 3—17.

12. Davis H., Memmott J. 1982. Counting behavior in animals: A critical evaluation. Psychol. Bull., N92, p. 547—571.

13. Davis H., Pérusse R. 1988. Numerical competence in animals: Definitional issues, current evidence, and a new research agenda. Behav. Brain Sci., N11, p. 561—615.

14. Emmerton J. 2001. Birds’ Judgments of Number and Quantity. In: Avian Cognition. Edited and Published by Robert G. Cook, Department of Psychology, Tufts University In cooperation with Comparative Cognition Press.

15. Gellermann L.W. 1933. Form discrimination in chimpanzees and two-year-old children. Journ. Genet., Psychol., V.42, p. 3—27.

16. Gelman R., Gallistel C.R. 1978. The child’s understanding of number. Cambridge, MA: Harvard University Press.

17. Honig W.K., Stewart, K.E. 1989. Discrimination of relative numerosity by pigeons. Animal Learning amp; Behavior, V. 17, p. 134—146.

18. Kinnaman A.J. 1902. Mental life of two Macacus rhesus monkeys in captivity. Amer. J. Psycol., V. 13, p. 98—148.

19. Koehler O. 1941. Vom Erlernen unbenannter Anzahlen bei Vögeln. [On the learning of unnamed numerosities by birds]. Die Naturwissenschaften, Bd. 29, p. 201—218.

20. Koehler O. 1960. Le denombrement ches les animaux. L. Psychol. Norm. Pathol., V. 57, p. 39—45.

21. Matsuzawa T. 1985. Use of numbers by a chimpanzee. Nature, V. 315, p. 57—59.

Pepperberg I.M. 1987. Acquisition of the same — different concept by an African grey parrot (Psittacus errithacus): Learning with respect to categories of colour, shape and material. Anim. Learn. Behav., V. 15, p. 423—432.

22. Piaget J. 1954.The construction of reality in the child. (M. Cook, Trans.). New York: Basic Books (Original work published in 1937).

23. Reznikova Zh.I., Ryabko B.Ya. 2000. Using Information: Theory Approach to study the communication system and numerical competence in ants. In: From Animals to Animats 6. Proceeding of the Sixth International Conference on Simulation of Adaptive Behaviour. The MIT Press, Cambridge, Massachusetts, London. p. 501—506.

24. Reznikova Zh., Ryabko B. 2001. A study pf ants’ numerical competence. Electronic Transactions on Artificial Intelligence Issue: V. 5: Section B: pp. 111—126.

25. Woodruff G., Premack D. 1981. Primitive mathematical concepts in the chimpanzee: proportionality and numerosity. Nature, V. 293, p. 568—570.

26. Xia L., Siemann M., Delius J.D. 2000. Matching of numerical symbols with number of responses by pigeons. Animal Cognition, V. 3, p. 35—43.