This article was written by Kashira Gander and posted on September 9th, 2018. A study published in the Proceedings of the National Academy of Sciences is described to explore the brain mechanisms that let bilinguals switch languages without effort. Graduate student Esti Blanco-Elorrietta says that switching languages means disengaging with one language and then engaging in another. That turning off the new language takes more effort than turning on a language. While the process looks easy, switching languages is a complicated process since it “involves the successful coordination of two independent language systems.” 21 volunteers where researched who where fluent in American Sign Language (ASL) where they would look at an image and saying its term in English and sign language at the same time while being filmed and their brain activity was measured. They saw that turning off a language needed cognitive control activity while the turning on the other language required almost no effort. Turning off is hardest when it is our dominant language causing a cognitive cost from stopping the language we are used to. Also, when speaking using the weaker language, we can add our dominant language is not hard at all. Thus we can “produce two languages for the price of one.” A limitation of the study was that it consisted of single word/ sign level not on the sentence or conversational level; however, this is progress in the field.
This is important to my guiding questions as it explains the cost on the brain when switching between two languages.

Website Article Source: Gander, K. (2018, September 10). Bilingual brain: Here's what happens when you flip between languages. Retrieved July 11, 2019, from Newsweek website: https://www.newsweek.com/ bilingual-brain-heres-what-happens-when-you-flip-between-languages-1111264














