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Bilingualism as a desirable difficulty: Advantages in word learning depend on regulation of the dominant language

  • CARI A. BOGULSKI (a1), KINSEY BICE (a1) (a2) and JUDITH F. KROLL (a1) (a2)

Bilingualism imposes costs to language processing but benefits to word learning. We test a new hypothesis that relates costs in language processing at study to benefits in learning at test as desirable difficulties. While previous studies have taught vocabulary via bilinguals’ native language (L1), recent evidence suggests that bilinguals acquire regulatory skill in the L1 to coordinate the use of each language. We hypothesized that L1 regulation underlies the observed costs and benefits, with word learning advantages depending on learning via the L1. Four groups learned novel Dutch words via English translations: English monolinguals, and English–Spanish, Spanish–English, and Chinese–English bilinguals. Only English–Spanish bilinguals demonstrated a word learning advantage, but they adopted a costly study strategy compared to monolinguals. The results suggest that bilingual advantages in vocabulary learning depend on learning via the L1 or dominant language because learning via the L1 allows bilinguals to engage regulatory skills that benefit learning.

Corresponding author
Address for correspondence: Judith Kroll, Department of Psychology, University of California, Riverside, Riverside, CA
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*The writing of this paper was supported in part by NIH Grant HD082796 and NSF Grants BCS-1535124 and OISE-1545900 to J.F. Kroll. C.A. Bogulski was supported by a National Science Foundation Graduate Fellowship. K. Bice was supported by the William Orr Dingwall Foundation Neurolinguistics Fellowship and by an NSF Dissertation Enhancement Award, BCS-1551892. The data reported here were initially collected as part of a master's thesis conducted at Penn State University by C.A. Bogulski, under the direction of J.F. Kroll. We thank Katie Juza, Anne Marie Toccket, Mark Minnick, Jason Gullifer, Joyce Tam, Tracey Chen, Eileen Tsai, Shara Gress for assistance with data coding and data collection. We also thank Natsuki Atagi and Emily Mech for comments on an earlier version of the manuscript.

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