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Response to Comments on “Differential Sensitivity to Human Communication in Dogs, Wolves, and Human Infants”

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Science  09 Jul 2010:
Vol. 329, Issue 5988, pp. 142
DOI: 10.1126/science.1184152


  • Fig. 1

    Scores of correct responses (mean + SE) in the B trials in the modified versions of the social-communicative condition in (1). After the experimenter had repeatedly hidden the toy using ostensive-communicative signals in the A trials, she enhanced both barriers (A and B) in the B trials by using either the same communicative (Com) or nonsocial sound signals (Sound). Different cuing patterns leads to a significantly different search response, providing evidence for the differential role of ostensive and nonostensive signals in inducing the A-not-B error. Dogs selected the baited B location in the balanced communicative cuing (ComA-ComB) condition [data from Marshall-Pescini et al. (3)], whereas they showed random search in the balanced nonsocial cuing context (SoundA-SoundB, n = 16) and significant search bias toward the empty A location if the experimenter enhanced the A location communicatively and then recalled the dogs’ attention by squeezing the toy before hiding it in the B location (ComA-SoundB, n = 16). *, P < 0.05.

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