Statistics of Language Morphology Change: From Biconsonantal Hunters to Triconsonantal Farmers
Identifieur interne : 000097 ( Main/Exploration ); précédent : 000096; suivant : 000098Statistics of Language Morphology Change: From Biconsonantal Hunters to Triconsonantal Farmers
Auteurs : Noam Agmon [Israël] ; Yigal Bloch [Israël]Source :
- PLoS ONE [ 1932-6203 ] ; 2013.
Abstract
Linguistic evolution mirrors cultural evolution, of which one of the most decisive steps was the "agricultural revolution" that occurred 11,000 years ago in W. Asia. Traditional comparative historical linguistics becomes inaccurate for time depths greater than, say, 10 kyr. Therefore it is difficult to determine whether decisive events in human prehistory have had an observable impact on human language. Here we supplement the traditional methodology with independent statistical measures showing that following the transition to agriculture, languages of W. Asia underwent a transition from biconsonantal (2c) to triconsonantal (3c) morphology. Two independent proofs for this are provided. Firstly the reconstructed Proto-Semitic fire and hunting lexicons are predominantly 2c, whereas the farming lexicon is almost exclusively 3c in structure. Secondly, while Biblical verbs show the usual Zipf exponent of about 1, their 2c subset exhibits a larger exponent. After the 2c > 3c transition, this could arise from a faster decay in the frequency of use of the less common 2c verbs. Using an established frequency-dependent word replacement rate, we calculate that the observed increase in the Zipf exponent has occurred over the 7,500 years predating Biblical Hebrew namely, starting with the transition to agriculture.
Url:
DOI: 10.1371/journal.pone.0083780
PubMed: 24367613
PubMed Central: 3868553
Affiliations:
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Asia. Traditional comparative historical linguistics becomes inaccurate for time depths greater than, say, 10 kyr. Therefore it is difficult to determine whether decisive events in human prehistory have had an observable impact on human language. Here we supplement the traditional methodology with independent statistical measures showing that following the transition to agriculture, languages of W. Asia underwent a transition from biconsonantal (2c) to triconsonantal (3c) morphology. Two independent proofs for this are provided. Firstly the reconstructed Proto-Semitic fire and hunting lexicons are predominantly 2c, whereas the farming lexicon is almost exclusively 3c in structure. Secondly, while Biblical verbs show the usual Zipf exponent of about 1, their 2c subset exhibits a larger exponent. After the 2c > 3c transition, this could arise from a faster decay in the frequency of use of the less common 2c verbs. Using an established frequency-dependent word replacement rate, we calculate that the observed increase in the Zipf exponent has occurred over the 7,500 years predating Biblical Hebrew namely, starting with the transition to agriculture.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Smith, Bd" uniqKey="Smith B">BD Smith</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Clutton Brock, J" uniqKey="Clutton Brock J">J Clutton-Brock</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kuijt, I" uniqKey="Kuijt I">I Kuijt</name></author><author><name sortKey="Goring Morris, N" uniqKey="Goring Morris N">N Goring-Morris</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Lipi Ski, E" uniqKey="Lipi Ski E">E Lipiński</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Del Olmo Lete, G" uniqKey="Del Olmo Lete G">G 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