Abstract
Pigeons viewing monocularly showed marked lateral displacement in pecking for grain. This displacement, which occurs towards the seeing eye, could explain why birds trained monocularly to discriminate mirror-image stimuli sometimes favor the negative stimulus when tested with the untrained eye open. Records of off-key pecking obtained during an experiment on interocular transfer lend some support to this idea.
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Beale, I.L., Corballis, M.C. Laterally displaced pecking in monocularly viewing pigeons: A possible factor in interocular mirror-image reversal. Psychon Sci 9, 603–604 (1967). https://doi.org/10.3758/BF03327910
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DOI: https://doi.org/10.3758/BF03327910