Abstract
Two chimpanzees were trained to complete linear patterns contained within a 4 by 4 stimulus matrix. It was found that the animals were significantly inferior when required to complete diagonal as compared to vertical and horizontal patterns. Rotation of the stimulus matrix 45 degrees decreased this deficiency but failed to equate the rotated displays with their vertical and horizontal controls.
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The author wishes to acknowledge the support of grant NASr-83 from the National Aeronautic and Space Administration for support of this research.
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Levere, T.E. Linear pattern completion by chimpanzees. Psychon Sci 5, 15–16 (1966). https://doi.org/10.3758/BF03328255
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DOI: https://doi.org/10.3758/BF03328255