Did they talk their way out of Africa?

Pearce, T. M. (2003) Did they talk their way out of Africa? Behavioral and Brain Sciences, 26 (2). 235-+. ISSN 0140-525X

Abstract/Summary

Corballis suggests that fully vocal communication was invented by modern humans between 170,000 and 50,000 years ago. Because this new form of communication did not require hand gestures, he wondered whether this may have facilitated the development of lithic manufacture. I cast doubt on this interesting notion but offer an enhanced version that may have more potential.