Back in 2011, I posted The Bilingual Advantage, featuring a NY Times interview about “how bilingualism sharpens the mind”; now it seems that was hooey. Emily S. Nichols, Conor J. Wild, Bobby Stojanoski, Michael E. Battista, and Adrian M. Owen have a new article in Psychological Science (Volume 31, Issue 5; https://doi.org/10.1177/09567976209031) titled “Bilingualism Affords No General Cognitive Advantages: A Population Study of Executive Function in 11,000 People”) whose abstract says “We assessed 11,041 participants on a broad battery of 12 executive tasks whose functional and neural properties have been well described. Bilinguals showed an advantage over monolinguals on only one test (whereas monolinguals performed better on four tests), and these effects all disappeared when the groups were matched to remove potentially confounding factors.” Here are some salient passages from the article:
In this study of 11,041 participants, no reliable differences in executive function were observed between monolinguals and people who reported speaking more than one language. First, when we created matched groups to eliminate confounds that may be masking an executive function advantage in bilinguals, and to ensure that our groups met the criteria for being either monolingual or bilingual, we found no significant group differences. Second, when utilizing the entire (large, though unbalanced) data set, we found that only one task, Digit Span, showed an advantage in performance in bilinguals. Although this result is statistically significant, it is important to put it in perspective: The regression coefficient was 0.05. In real terms, this means that, statistically, speaking a second language is associated with better memory for digits, but that difference is one twentieth of 1 standard deviation. […]
These results demonstrate that, across a broad battery of cognitive tasks of executive function, no systematic differences exist between monolinguals and bilinguals. […]
We conclude by emphasizing, however, that despite the fact that no meaningful relationship was found between bilingualism and executive function, the broader social, employment, and lifestyle benefits that are available to speakers of a second language are clearly numerous.
I’m glad they added that last paragraph to ward off despair!
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