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Baboons recognize direction of vocalization
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Pennsylvania, USA (ScienceDirect): Combined with results from previous experiments testing baboons' responses to ‘reconciliatory’ grunts, these results suggest that baboons make inferences about the directedness of vocalizations even in the absence of visual cues, and that the nature of prior interactions affects subsequent behaviour. When attending to vocal signals, baboons appear to take into account not only the signaller's identity and her probable subsequent behaviour, but also the target of her attention. The ability to integrate these cues may represent a first crucial step towards the recognition of other individuals' intentions and motives.
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