Initial evidence for probabilistic reasoning in a grey parrot (Psittacus erithacus).

Katherine A. Clements; Suzanne L. Gray; Brya Gross; Irene M. Pepperberg

doi:10.1037/com0000106

March 12, 2018Journal of comparative psychology

Initial evidence for probabilistic reasoning in a grey parrot (Psittacus erithacus).

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Key Points

Determine whether an avian subject can execute probabilistic reasoning by inferring the identity of a sampled item based on known population ratios.
Tested a single Grey parrot (Psittacus erithacus) with prior training in referential English vocal labels.
Placed two distinct item types into an opaque container in a 3:1 ratio and randomly extracted a single item out of the parrot's view.
Prompted the parrot to vocally identify the hidden withdrawn item across a large series of trials.
The parrot's vocal predictions accurately tracked the 3:1 population distribution across trials.
The findings demonstrate that probabilistic reasoning based on sample ratios is not limited to humans, nonhuman primates, or mammals.

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Implication

Cognitive experiment demonstrates probabilistic reasoning in a grey parrot, indicating that statistical inference capabilities extend beyond mammals to avian species.

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Cite This Study

Clements et al. (2018) studied this question.

synapsesocial.com/papers/6a1106eec56c5252651a0ab8 https://doi.org/10.1037/com0000106

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Initial evidence for probabilistic reasoning in a grey parrot (Psittacus erithacus).

Key Points

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Implication

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Cite This Study

Initial evidence for probabilistic reasoning in a grey parrot (Psittacus erithacus).

Key Points

No abstract yet

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Implication

Discussion

Cite This Study

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