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But if universal grammar did not evolve by natural selection, how could it have arisen? Our findings suggest that language must be a culturally evolved system, not a product of biological adaption. This is consistent with current theories that language arose from the unique human capacity for social intelligence. Story Source: The above story is reprinted with editorial adaptations by ScienceDaily staff from materials provided by University College London, via AlphaGalileo. Journal Reference: Nick Chater, Florencia Reali, and Morten Christiansen. Restrictions on biological adaptation in language evolution. Proceedings of the National Academy of Sciences, 19 January 2009 Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.


Details of this study will be presented at the American Academy of Neurology 56th Annual Meeting in San Francisco, Calif., April 24 May 1, 2004. From childhood until about age 25, language capacity in righthanders grows stronger in the left hemisphere of the brain. This phenomenon is usually converse to a persons handedness, where a righthanded person holds language in the left hemisphere, and vice versa. Using functional magnetic resonance imaging fMRI researchers have now shown that after about age 25, language capacity evens out somewhat, with older adults using more of both hemispheres relative to language skills. We are most interested in why this occurs, and the age at which the hemispheric language dominance begins to decrease, notes study author Jerzy P. Szaflarski, MD, PhD, of the University of Cincinnati Medical Center in Ohio.


Thinkers since antiquity have pondered about the nature of the relationship between language and perception: to what extent are the mental categories that we use to classify objects and their qualities determined by our language? The new findings have opened up new opportunities for the study of the human mind, Dr Luke elaborated. He said a deeper understanding of the universal basis of language on the one hand, and how different languages may vary in their conceptual bases, should be of direct relevance to language teaching. Further research on the relationship between language and perception may uncover principles that would enhance the effectiveness of peoples learning of second and foreign languages.


The less successful participants averaged 63 percent accuracy and sometimes required as many as 18 training sessions to correctly identify the words. Whats important is that we are looking at the brain in a new way that may allow us to understand brain functions more comprehensively and that could help us more effectively teach foreign languages and possibly other skills, said Wong. Wongs research is supported by grants from the National Institutes of Health. Story Source: The above story is reprinted with editorial adaptations by ScienceDaily staff from materials provided by Northwestern University. Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

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