The Language Exposure Assessment Tool: Quantifying Language Exposure in Infants and Children Purpose The aim of this study was to develop the Language Exposure Assessment Tool (LEAT) and to examine its cross-linguistic validity, reliability, and utility. The LEAT is a computerized interview-style assessment that requests parents to estimate language exposure. The LEAT yields an automatic calculation of relative language exposure and captures ... Research Article
Research Article  |   December 01, 2016
The Language Exposure Assessment Tool: Quantifying Language Exposure in Infants and Children
 
Author Affiliations & Notes
  • Stephanie DeAnda
    San Diego State University, CA
    University of California, San Diego
  • Laura Bosch
    University of Barcelona, Spain
  • Diane Poulin-Dubois
    Concordia University, Montreal, Canada
  • Pascal Zesiger
    University of Geneva, Switzerland
  • Margaret Friend
    San Diego State University, CA
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Stephanie DeAnda: sdeanda21@gmail.com
  • Editor: Rhea Paul
    Editor: Rhea Paul×
  • Associate Editor: Margarita Kaushanskaya
    Associate Editor: Margarita Kaushanskaya×
Article Information
Development / Cultural & Linguistic Diversity / Research Issues, Methods & Evidence-Based Practice / Language / Research Articles
Research Article   |   December 01, 2016
The Language Exposure Assessment Tool: Quantifying Language Exposure in Infants and Children
Journal of Speech, Language, and Hearing Research, December 2016, Vol. 59, 1346-1356. doi:10.1044/2016_JSLHR-L-15-0234
History: Received July 3, 2015 , Revised October 29, 2015 , Accepted March 16, 2016
 
Journal of Speech, Language, and Hearing Research, December 2016, Vol. 59, 1346-1356. doi:10.1044/2016_JSLHR-L-15-0234
History: Received July 3, 2015; Revised October 29, 2015; Accepted March 16, 2016
Web of Science® Times Cited: 2

Purpose The aim of this study was to develop the Language Exposure Assessment Tool (LEAT) and to examine its cross-linguistic validity, reliability, and utility. The LEAT is a computerized interview-style assessment that requests parents to estimate language exposure. The LEAT yields an automatic calculation of relative language exposure and captures qualitative aspects of early language experience.

Method Relative language exposure as reported on the LEAT and vocabulary size at 17 months of age were measured in a group of bilingual language learners with varying levels of exposure to French and English or Spanish and English.

Results The LEAT demonstrates high internal consistency and criterion validity. In addition, the LEAT's calculation of relative language exposure explains variability in vocabulary size above a single overall parent estimate.

Conclusions The LEAT is a valid and efficient tool for characterizing early language experience across cultural settings and levels of language exposure. The LEAT could be a useful tool in clinical contexts to aid in determining whether assessment and intervention should be conducted in one or more languages.

Acknowledgments
This research was supported by National Institutes of Health awards 5R01HD068458 and HD068458-02S1 to the senior author and 1F31HD081933 to the first author and does not necessarily represent the views of the National Institutes of Health. Additional funding was provided by the Ministry of Economy and Competitiveness (PSI-2011-25376) to the second author and by the Natural Sciences and Engineering Research Council of Canada (2003–2013) to the third author. We gratefully acknowledge Zaira Flores, Kristi Hendrickson, Anya Mancillas, Tamara Patrucco, and Monyka Rodrigues for assistance in participant recruitment, data collection, and coding and all of the parents and infants who devoted their time to participate in this research. Parts of the research included in this manuscript were presented at the Society for Research and Child Development Special Topics meeting on Developmental Methods (September 2014).
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