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Scientists Dispute Study Touting Vocal Learning in Chimpanzees

A team of scientists took issue on Monday with a study published in February claiming to demonstrate vocal learning by chimpanzees in their food grunts, saying the researchers  offered exaggerated assertions backed by scant evidence. The authors of that study in the journal Current Biology, which received wide media coverage, stated chimps joining another troop changed their calls to match their new peers in a finding interpreted as shedding light on language evolution. They...

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