On the contrary the beneficial properties are popularly ascribed to bilingualism itself. For example: https://www.nytimes.com/2012/03/18/opinion/sunday/the-be

On the contrary the beneficial properties are popularly ascribed to bilingualism itself. For example: https://www.nytimes.com/2012/03/18/opinion/sunday/the-benefits-of-bilingualism.html https://www.nytimes.com/2012/03/18/opinion/sunday/the-benefi...? https://www.wsj.com/articles/does-being-bilingual-make-you-smarter-11639686497 https://www.wsj.com/articles/does-being-bilingual-make-you-s... Although it seems that skepticism about this truism goes back a few years as well. https://journals.sagepub.com/doi/10.1177/0956797614557866 https://journals.sagepub.com/doi/10.1177/0956797614557866