Processing individually distinctive schematic-faces supports proto-arithmetical counting in the young domestic chicken

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SUMMARY

    Color, size, shape, and individual features are useful for object identification in infants as well as in young domestic chicks. The authors wondered whether object individuation could rely on chicks` predisposition to recognize other chicks individually. A previous study showed that the presence on each object of differently oriented black segments (not arranged in a face-like configuration) supported the discrimination between three and four objects in young domestic chicks. Surprisingly, the discrimination was suppressed whenever the features were arranged into distinctive face-like objects, and it was restored by turning the face-like . . .

     

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