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There has been a lot of debate over bilingualism in education. I have read a bit on the website of the National Association for Bilingual Education and some other links to read about bilingualism. However being an amateur in this field, I'd like to know what are the major works (if not conclusive) that support and dissuade against bilingualism in education especially in the context of cognitive science?

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Have you checked some of the references at the bottom of the website you link to? –  Steven Jeuris Jun 28 '13 at 8:10
    
Yes, I have (and currently checking some of them). However, there are numerous references and I don't know which of these works can considered to be seminal. –  TheRookierLearner Jun 28 '13 at 8:52
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2 Answers

up vote 7 down vote accepted

This is a phenomenom I was able to witness first hand when I used to work in an International School, where every student had to learn Japanese and English, as well as having their mother-tongue (some had several more languages as well).

In the paper "Bilingualism and cognitive development in relation to threshold theory" (Ricciardelli, 1992), it is stated that:

This theory (threshold theory) maintains that there may be levels of linguistic proficiency which bilingual children must attain in order to avoid cognitive deficits and to allow the cognitive benefits.

Further, in "A Systematic Review and Meta-Analysis of the Cognitive Correlates of Bilingualism" (Adesope, 2010), some links between bilingualism and some increased cognitive abilities have been suggested from research. From their abstract:

Results indicate that bilingualism is reliably associated with several cognitive outcomes, including increased attentional control, working memory, metalinguistic awareness, and abstract and symbolic representation skills.

A link between bilingualism and how the bilingual student would tackle worded maths problems, in Cognitive Benefits and Costs of Bilingualism in Elementary School Students: The Case of Mathematical Word Problems (Kempert et al. 2011).

An important point

bilinguals gained scores comparable to those of their monolingual peers on word problems that required attentional control skills although performing significantly below their monolingual classmates on ordinary word problems, suggesting that bilinguals have an advantage when it comes to attentional control.

However, there are potential cognitive costs in transferring knowledge from one language to another.

I hope this helps

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+1. I'd love some more references, but I can look them up into the papers that you pointed to. :) Surely, this helps.. –  TheRookierLearner Jun 28 '13 at 6:58
    
I'll be happy to add more references when i get home from my lab. –  user3554 Jun 28 '13 at 7:14
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A meta review of 2010 seems like an accurate answer to me, thanks! –  Steven Jeuris Jun 28 '13 at 8:12
    
it is a very read too –  user3554 Jun 28 '13 at 8:15
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Just added another reference... very interesting link to maths learning. –  user3554 Jun 28 '13 at 9:24
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Some cognitive scientists I heard are clear about benefits of being bilingual as exposed by @Damien or here - http://www.nytimes.com/2011/05/31/science/31conversation.html?_r=0. They also do not hide the associated cognitive costs especially at a young age. I found the following presentation very interesting http://bilingualism.bangor.ac.uk/seminars/documents/AlbertCosta_000.pdf (!! one image af a brain may be disturbing !!).

Hellen Bialystock is a world class researcher in Toronto (more than 100 different languages here, a unique place to work on bilangualism she says). Alert Costa works in Barcelona on Catalan/Spanish - these two researchers are part of my trusted sources of information to understand my bilingual kids!

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