Chimpanzees, like humans, have the capacity to combine vocalizations to create larger, meaningful forms of communication. According to UZH researchers, this capability could be even more ancient in evolutionary terms than previously assumed. The ability to merge words into larger, meaningful phra
Chimpanzees are known to produce a number of different vocalizations and combine these calls into larger sequences. Credit: Adrian Soldati
The ability to merge words into larger, meaningful phrases is a fundamental characteristic of human language, where the significance of the entire phrase is connected to the meanings of its constituent parts. However, the origins and evolutionary development of this ability remain unclear. “Chimpanzees produce ‘alarm-huus’ when surprised and ‘waa-barks’ when potentially recruiting conspecifics during aggression or hunting,” says Maël Leroux, a postdoctoral student at the Department of Comparative Language Science of UZH, who led the study. “Our behavioral observations suggest that chimpanzees combine these calls when exposed to a threat where recruiting group members is advantageous, such as when encountering a snake, but until now experimental verification has been missing.
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