Abstract
Four monocularly viewing pigeons were trained to peck at parallel 135° lines (S+), displayed on one key, and not to peck at parallel 45° lines (S−), simultaneously displayed on another key. When tested on both simultaneous and successive discrimination with only the untrained eye open, three birds favored S+. The fourth bird showed mirror-image reversal, favoring S− on all tests. Our results contrast with previous experiments involving successive discrimination training in which mirror-image reversal appears to be the rule.
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This research was partially supported by a post-doctoral grant from the American Psychological Foundation to the first author.
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Corballis, M.C., Beale, I.L. Interocular transfer following simultaneous discrimination of mirror-image stimuli. Psychon Sci 9, 605–606 (1967). https://doi.org/10.3758/BF03327911
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DOI: https://doi.org/10.3758/BF03327911