Continuous Effects of Bilingualism...
In the paper "Continuous Effects of Bilingualism and Attention on Flanker Test Performance," published in Bilingualism: Language and Cognition, Dr. Ashley Chung-Fat-Yim shows how bilingualism leads to cognitive benefits.
"Both bilingualism and attention contribute to the development of executive functioning (EF), with higher levels of both leading to better outcomes. The present study treats bilingualism and attention as continuous variables to investigate their impact on EF. Eighty-two 9-year-olds who were attending a French school in an anglophone community completed a flanker task. Children’s progress in French represented their level of bilingualism, and attention was assessed through a standard standardized instrument. Degree of bilingualism and degree of attention were both positively related to performance, but exposure to a third language in the home did not further affect outcomes."