Ordinality and inferential abilities of a grey parrot (Psittacus erithacus).
@article{Pepperberg2006OrdinalityAI,
title={Ordinality and inferential abilities of a grey parrot (Psittacus erithacus).},
author={Irene M. Pepperberg},
journal={Journal of comparative psychology},
year={2006},
volume={120 3},
pages={
205-16
}
}A grey parrot (Psittacus erithacus), able to label the color of the bigger or smaller object in a pair (I. M. Pepperberg & M. V. Brezinsky, 1991), to vocally quantify < or =6 item sets (including heterogeneous subsets; I. M. Pepperberg, 1994), and separately trained to identify Arabic numerals 1-6 with the same vocal English labels but not to associate Arabic numbers with their relevant physical quantities, was shown pairs of Arabic numbers or an Arabic numeral and a set of objects and was…
75 Citations
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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.
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