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Grammar: Eventually the brain opts for the easy route
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Grammar: Eventually the brain opts for the easy route

Grammar: Eventually the brain opts for the easy route
News

Grammar: Eventually the brain opts for the easy route

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Languages are constantly evolving – and grammar is no exception. The way in which the brain processes language triggers adjustments. If the brain has to exert itself too much to cope with difficult case constructions, it usually simplifies them over time, as linguists from the University of Zurich (UZH) demonstrate in a study on languages all over the world.


The grammar of languages keeps reorganizing itself. A prime example of this is the omission of case endings in the transition from Latin to Italian. And in some instances, case systems are remodeled entirely – such as in the transition from Sanskrit to Hindi, which has completely new grammatical cases.  


Simplifications found in all languages

An international team of researchers headed by linguist Balthasar Bickel from the University of Zurich conducted statistical analyses of the case systems in more than 600 languages and recorded the changes over time. They then tested these adaptations experimentally in test subjects, measuring the brain flows that become active during language comprehension. The scientists were therefore able to demonstrate that the brain activity is stronger for complex case constructions than for simple ones.


grammar

If the first noun in a sentence without a clear case marker ("Bertram") does not refer to the agent, the brain activity is stronger (see blue curve). Credit: UZH
 

"Certain case constructions tax the brain more, which is why they are eventually omitted from languages all over the world – independently of the structural properties of the languages or socio-historical factors," explains Bickel, a professor of general linguistics at the University of Zurich. In other words, biological processes are also instrumental in grammatical changes. "Our findings pave the way for further studies on the origin and development of human language and a better understanding of speech disorders."


Note: Material may have been edited for length and content. For further information, please contact the cited source.

University of Zurich   press release


Publication

Bornkessel-Schlesewsky I et al. The neurophysiology of language processing shapes the evolution of grammar: evidence from case marking.   PLoS One, Published August 12 2015. doi: 10.6084/m9.figshare.1394600


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