Scientists examining the evolutionary roots of language say they've discovered chimp vocal development is not far off from humans.
A study has provided evidence that young chimpanzees are capable of vocal functional flexibility; a known building block in human language development.
New research has found that infant and juvenile chimps demonstrate a similar vocal flexibility, which implies the foundations for speech are rooted in our primate evolutionary heritage. When reviewing and classifying the sounds, they discovered that similar to human infants, the chimps produced calls with different affective states -- positive, neutral, or negative -- alongside a variety of facial expressions and movements.
"We mirrored another piece of research carried out in America, which looked at vocal functional flexibility in human infants, to ensure that our research followed a similar methodology and the results could easily be compared.
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