Analysis by British archaeologist Steven Mithen suggests that early humans first developed rudimentary language around 1.6 million years ago – somewhere in eastern or southern Africa.
“Humanity’s development of the ability to speak was without doubt the key which made much of subsequent human physical and cultural evolution possible. That’s why dating the emergence of the earliest forms of language is so important,” said Dr Mithen, professor of early prehistory at the University of Reading.
Until recently, most human evolution experts thought that humans only started speaking around 200,000 years ago. Professor Mithen’s new research, published this month, suggests that rudimentary human language is at least eight times older. His analysis is based on a detailed study of all the available archaeological, paleo-anatomical, genetic, neurological and linguistic evidence.
When combined, all the evidence suggests that the birth of language occurred as part of a suite of human evolution and other developments between two and 1.5 million years ago.
Significantly, human brain size increased particularly rapidly from 2 million BC, especially after 1.5 million BC. Associated with that brain size increase was a reorganisation of the internal structure of the brain – including the first appearance of the area of the frontal lobe, specifically associated with language production and language comprehension. Known to scientists as Broca’s area, it seems to have evolved out of earlier structures responsible for early humanity’s ability to communicate with hand and arm gestures.
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