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3-143 - The bilingual advantage meets big data: Results of three large-sample studies in children

Sat, March 23, 12:45 to 2:15pm, Hilton Baltimore, Floor: Level 2, Key 2

Session Type: Paper Symposium

Integrative Statement

The question of whether bilingual children hold an executive function (EF) advantage over monolingual children has stimulated substantial research, but controversy remains about whether such an advantage exists, and there are advocates on both sides (see target article/commentaries in Cortex, 2015 (v. 69). With some notable exceptions, research to date has been conducted in small samples. This is undesirable because it can both increase the risk of failure to find differences when they do exist, and simultaneously may increase the risk of reporting significant findings that are susceptible to sampling bias. In the three studies presented here, we address this issue with large-sample investigations in children (n = 4524; n = 700, n = 500). In each case, there was a failure to replicate an effect of language status across a number of different executive function tasks. These results have far reaching implications for the nature and reliability of the bilingual EF advantage in children. We also investigated whether demographic factors—namely socioeconomic status (SES)—might mitigate or even explain differences found in previous studies of bilingual advantages for EF. Two of the reported studies (one with infants; n = 80) affirmed the importance of SES in shaping developmental trajectories, and how this variable might moderate any EF differences between monolinguals and bilinguals. The results we report further clarify the situations in which EF differences associated with language status might occur, and re-affirm the importance of sample size and careful measurement of potentially important demographic variables such as SES.

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