Bottlenosed dolphins (Tursiops truncatus) comprehend the referent of both static and dynamic human gazing and pointing in an object-choice task

Journal of Comparative Psychology
A A Pack, L M Herman

Abstract

The authors tested 2 bottlenosed dolphins (Tursiops truncatus) for their understanding of human-directed gazing or pointing in a 2-alternative object-choice task. A dolphin watched a human informant either gazing at or pointing toward 1 of 2 laterally placed objects and was required to perform a previously indicated action to that object. Both static and dynamic gaze, as well as static and dynamic direct points and cross-body points, yielded errorless or nearly errorless performance. Gaze with the informant's torso obscured (only the head was shown) produced no performance decrement, but gaze with eyes only resulted in chance performance. The results revealed spontaneous understanding of human gaze accomplished through head orientation, with or without the human informant's eyes obscured, and demonstrated that gaze-directed cues were as effective as point-directed cues in the object-choice task.

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Citations

Oct 20, 2005·Animal Cognition·Adam Miklósi, Krisztina Soproni
Feb 6, 2008·Animal Cognition·Katalin MarosAdám Miklósi
Oct 8, 2008·Animal Cognition·Carla Krachun, Josep Call
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Mar 23, 2006·Journal of Comparative Psychology·Juliane BräuerMichael Tomasello
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Mar 18, 2021·Animal Cognition·Mathilde LalotDalila Bovet

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