Evidence map›Paper›PMID 30582256›Full record

ArticleDevelopmental science2019

Bilingual toddlers' comprehension of mixed sentences is asymmetrical across their two languages.

Christine E Potter, Eva Fourakis, Elizabeth Morin-Lessard, Krista Byers-Heinlein, Casey Lew-Williams

Abstract read
In one paragraph

Article in Developmental science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed.

  1. Article
  2. Patterns of Mother, Father, and Child Code-Switching and Links With Child Language Development.Journal of speech, language, and hearing research : JSLHR · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Mixed-Language Input and Infant Volubility: Friend or Foe?Bilingualism (Cambridge, England) · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. iCatcher: A neural network approach for automated coding of young children's eye movements.Infancy : the official journal of the International Society on Infant Studies · 2022
    Article
  15. Article
  16. Fine-tuning language discrimination: Bilingual and monolingual infants' detection of language switching.Infancy : the official journal of the International Society on Infant Studies · 2021
    Article
  17. Efficient Estimation of Children's Language Exposure in Two Bilingual Communities.Journal of speech, language, and hearing research : JSLHR · 2021
    Article
  18. Processing of Code-Switched Sentences in Noise by Bilingual Children.Journal of speech, language, and hearing research : JSLHR · 2021
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Christine E PotterDepartment of Psychology, Princeton University, Princeton, New Jersey.
Eva FourakisDepartment of Psychology, Princeton University, Princeton, New Jersey.
Elizabeth Morin-LessardConcordia University, Montreal, QC, Canada.
Krista Byers-HeinleinConcordia University, Montreal, QC, Canada.
Casey Lew-WilliamsDepartment of Psychology, Princeton University, Princeton, New Jersey.

Funding

Navigating two languages: Effects of everyday language switching on bilingual infants and toddlersR01HD095912 · NICHD · PRINCETON UNIVERSITY · PI BYERS-HEINLEIN, KRISTA, LEW-WILLIAMS, CASEY · 2019 to 2023
$1.9M
Bilingual Infants' and Toddlers' Processing of Mixed LanguageR03HD079779 · NICHD · PRINCETON UNIVERSITY · PI LEW-WILLIAMS, CASEY · 2015 to 2016
$147k
NICHD NIH HHS R01 HD095912NICHD NIH HHS R03 HD079779
6 · The paper itself

Abstract

In bilingual language environments, infants and toddlers listen to two separate languages during the same key years that monolingual children listen to just one and bilinguals rarely learn each of their two languages at the same rate. Learning to understand language requires them to cope with challenges not found in monolingual input, notably the use of two languages within the same utterance (e.g., Do you like the perro? or ¿Te gusta el doggy?). For bilinguals of all ages, switching between two languages can reduce the efficiency in real-time language processing. But language switching is a dynamic phenomenon in bilingual environments, presenting the young learner with many junctures where comprehension can be derailed or even supported. In this study, we tested 20 Spanish-English bilingual toddlers (18- to 30-months) who varied substantially in language dominance. Toddlers' eye movements were monitored as they looked at familiar objects and listened to single-language and mixed-language sentences in both of their languages. We found asymmetrical switch costs when toddlers were tested in their dominant versus non-dominant language, and critically, they benefited from hearing nouns produced in their dominant language, independent of switching. While bilingualism does present unique challenges, our results suggest a united picture of early monolingual and bilingual learning. Just like monolinguals, experience shapes bilingual toddlers' word knowledge, and with more robust representations, toddlers are better able to recognize words in diverse sentences.

Indexed as

Language DevelopmentMultilingualismAuditory PerceptionChild, PreschoolComprehensionEye MovementsFemaleHumansInfantLanguageLearningMalebilingualismlanguage developmentlanguage processinglanguage switchingstatistical learningword representations

Identifiers

PMID30582256
PMCPMC6570532

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.