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  1.  22
    To Move or Not to Move: How Apes Adjust to the Attentional State of Others.Katja Liebal, Josep Call, Michael Tomasello & Simone Pika - 2004 - Interaction Studiesinteraction Studies Social Behaviour and Communication in Biological and Artificial Systems 5 (2):199-219.
    A previous observational study suggested that when faced with a partner with its back turned, chimpanzees tend to move around to the front of a non-attending partner and then gesture — rather than gesturing once to attract attention and then again to convey a specific intent. We investigated this preference experimentally by presenting six orangutans, five gorillas, nine chimpanzees, and four bonobos with a food begging situation in which we varied the body orientation of an experimenter with respect to the (...)
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    To Move or Not to Move.Katja Liebal, Josep Call, Michael Tomasello & Simone Pika - 2004 - Interaction Studies. Social Behaviour and Communication in Biological and Artificial Systemsinteraction Studies / Social Behaviour and Communication in Biological and Artificial Systemsinteraction Studies 5 (2):199-219.
    A previous observational study suggested that when faced with a partner with its back turned, chimpanzees tend to move around to the front of a non-attending partner and then gesture — rather than gesturing once to attract attention and then again to convey a specific intent. We investigated this preference experimentally by presenting six orangutans, five gorillas, nine chimpanzees, and four bonobos with a food begging situation in which we varied the body orientation of an experimenter with respect to the (...)
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    What is the Nature of the Gestural Communication of Great Apes.Simone Pika - 2008 - In J. Zlatev, T. Racine, C. Sinha & E. Itkonen (eds.), The Shared Mind: Perspectives on Intersubjectivity. John Benjamins. pp. 165--186.
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