Indo-European languages emerged roughly 6,500 years ago on Russian steppes,
new research suggests
http://www.linguisticsociety.org/news/2015/02/13/indo-european-languages-6500-years-ago
缩网址：http://goo.gl/g3b7oB
Linguists have long agreed that languages from English to Greek to Hindi,
known as 'Indo-European languages', are part of a language family which first
emerged from a common ancestor spoken thousands of years ago. Now, a new
study gives us more information on when and where it was most likely used.
Using data from over 150 languages, linguists at the University of
California, Berkeley provide evidence that this ancestor language originated
5,500 - 6,500 years ago, on the Pontic-Caspian steppe stretching from Moldova
and Ukraine to Russia and western Kazakhstan.
"Ancestry-constrained phylogenetic analysis supports the Indo-European steppe
hypothesis", by Will Chang, Chundra Cathcart, David Hall and Andrew Garrett,
will appear in the March issue of the scholarly journal Language. A pre-print
version of the article is available on the LSA website.
http://www.linguisticsociety.org/files/news/ChangEtAlPreprint.pdf
This article provides new support for the "steppe hypothesis" or "Kurgan
hypothesis", which proposes that Indo-European languages first spread with
cultural developments in animal husbandry around 4500 - 3500 BCE. (An
alternate theory proposes that they spread much earlier, around 7500 - 6000
BCE, in Anatolia in modern-day Turkey.)
Chang et al. examined over 200 sets of words from living and historical
Indo-European languages; after determining how quickly these words changed
over time through statistical modeling, they concluded that the rate of
change indicated that the languages which first used these words began to
diverge approximately 6,500 years ago, in accordance with the steppe
hypothesis.
This is one of the first quantitatively-based academic papers in support of
the steppe hypothesis, and the first to use a model with "ancestry
constraints" which more directly incorporate previously discovered
relationships between languages. Discussion of prior studies in favor of and
against the steppe hypothesis can be found in the paper.
Members of the media who are interested in discussing the article and its
findings may contact Brice Russ, LSA Director of Communications, and Andrew
Garrett, Professor of Linguistics at the University of California, Berkeley.