Abstract
Purpose
This study examined the utility of the Language ENvironment Analysis (LENA) recording system for investigating the language input to bilingual infants.
Method
Twenty-one French–English bilingual families with a 10-month-old infant participated in this study. Using the LENA recording system, each family contributed 3 full days of recordings within a 1-month period. A portion of these recordings (945 minutes) were manually transcribed, and the word counts from these transcriptions were compared against the LENA-generated adult word counts.
Results
Data analyses reveal that the LENA algorithms were reliable in counting words in both Canadian English and Canadian French, even when both languages are present in the same recording. While the LENA system tended to underestimate the amount of speech in the recordings, there was a strong correlation between the LENA-generated and human-transcribed adult word counts for each language. Importantly, this relationship holds when accounting for different-gendered and different-accented speech.
Conclusions
The LENA recording system is a reliable tool for estimating word counts, even for bilingual input. Special considerations and limitations for using the LENA recording system in a bilingual population are discussed. These results open up possibilities for investigating caregiver talk to bilingual infants in more detail.
References
-
Abercrombie, D. (1967). Elements of general phonetics. Edinburgh, United Kingdom: Edinburgh University Press. -
Benítez-Barrera, C. R., Angley, G. P., & Tharpe, A. M. (2018). Remote microphone system use at home: Impact on caregiver talk.Journal of Speech, Language, and Hearing Research, 61(2), 399–409. https://doi.org/10.1044/2017_JSLHR-H-17-0168 -
Busch, T., Sangen, A., Vanpoucke, F., & van Wieringen, A. (2018). Correlation and agreement between Language Environment Analysis (LENA™) and manual transcription for Dutch natural language recordings.Behavior Research Methods, 50, 1921–1932. https://doi.org/10.3758/s13428-017-0960-0 -
Byers-Heinlein, K. (2012). Parental language mixing: Its measurement and the relation of mixed input to young bilingual children's vocabulary size.Bilingualism, 16(1), 32–48. https://doi.org/10.1017/s1366728912000120 -
Byers-Heinlein, K., Schott, E., Gonzales-Barrero, A. M., Brouillard, M., Dubé, D., Laoun-Rubsenstein, A., … Tamayo, M. P. (2019). MAPLE: A Multilingual Approach to Parent Language Estimates.Bilingualism: Language and Cognition. https://doi.org/10.1017/S1366728919000282 -
Canault, M., Le Normand, M.-T., Foudil, S., Loundon, N., & Thai-Van, H. (2015). Reliability of the Language ENvironment Analysis system (LENA™) in European French.Behavior Research Methods, 48(3), 1109–1124. https://doi.org/10.3758/s13428-015-0634-8 -
Caskey, M., Stephens, B., Tucker, R., & Vohr, B. (2014). Adult talk in the NICU with preterm infants and developmental outcomes.Pediatrics, 133(3), e578–e584. https://doi.org/10.1542/peds.2013-0104 -
Danielson, D. K., Seidl, A., Onishi, K. H., Alamian, G., & Cristia, A. (2014). The acoustic properties of bilingual infant-directed speech.The Journal of the Acoustical Society of America, 135, EL95. https://doi.org/10.1121/1.4862881 -
Ganek, H. V., & Eriks-Brophy, A. (2017). A concise protocol for the validation of Language ENvironment Analysis (LENA) conversational turn counts in Vietnamese.Communication Disorders Quarterly, 39, 371–380. https://doi.org/10.1177/1525740117705094 -
Ganek, H., Smyth, R., Nixon, S., & Eriks-Brophy, A. (2018). Using the Language ENvironment Analysis (LENA) system to investigate cultural differences in conversational turn count.Journal of Speech, Language, and Hearing Research, 61(9), 2246–2258. https://doi.org/10.1044/2018_JSLHR-L-17-0370 -
Garcia-Sierra, A., Ramírez-Esparza, N., & Kuhl, P. K. (2016). Relationships between quantity of language input and brain responses in bilingual and monolingual infants.International Journal of Psychophysiology, 110, 1–17. https://doi.org/10.1016/j.ijpsycho.2016.10.004 -
Gilkerson, J., & Richards, J. A. (2008). The LENA foundation natural language study(Technical Report LTR-02-2) . Retrieved from http://www.lenafoundation.org/TechReport.aspx/Natural_Language_Study/LTR-02-2 -
Gilkerson, J., Richards, J. A., & Topping, K. (2017). Evaluation of a LENA-based online intervention for parents of young children.Journal of Early Intervention, 39(4), 281–298. https://doi.org/10.1177/1053815117718490 -
Gilkerson, J., Zhang, Y., Xu, D., Richards, J. A., Xu, X., Jiang, F., … Topping, K. (2015). Evaluating Language Environment Analysis system performance for Chinese: A pilot study in Shanghai.Journal of Speech, Language, and Hearing Research, 58(2), 445–452. https://doi.org/10.1044/2015_JSLHR-L-14-0014 -
Grosjean, F. (1989). Neurolinguists, beware! The bilingual is not two monolinguals in one person.Brain and Language, 36(1), 3–15. https://doi.org/10.1016/0093-934X(89)90048-5 -
Grüter, T., Hurtado, N., Marchman, V. A., & Fernald, A. (2014). Language exposure and online processing efficiency in bilingual development.Input and Experience in Bilingual Development, 13, 15–36. https://doi.org/10.1075/tilar.13.02gru -
Hart, B., & Risley, T. R. (1995). Meaningful differences in the everyday experience of young American children. Baltimore, MD: Brookes. -
Kalashnikova, M., & Burnham, D. (2018). Infant-directed speech from seven to nineteen months has similar properties but different functions.Journal of Child Language, 45(5), 1035–1053. https://doi.org/10.1017/S0305000917000629 -
Li, L., Vikani, A. R., Harris, G. C., & Lin, F. R. (2014). Feasibility study to quantify the auditory and social environment of older adults using a digital language processor.Otology and Neurotology, 35(8), 1301–1305. https://doi.org/10.1097/MAO.0000000000000489 -
Marchman, V. A., Martínez, L. Z., Hurtado, N., Grüter, T., & Fernald, A. (2016). Caregiver talk to young Spanish–English bilinguals: Comparing direct observation and parent-report measures of dual-language exposure.Developmental Science, 20(1), e12425. https://doi.org/10.1111/desc.12425 -
Odean, R., Nazareth, A., & Pruden, S. M. (2015). Novel methodology to examine cognitive and experiential factors in language development: Combining eye-tracking and LENA technology.Frontiers in Psychology, 6, 1266. https://doi/org/10.3389/fpsyg.2015.01266 -
Oller, D. K., Niyogi, P., Gray, S., Richards, J. A., Gilkerson, J., Xu, D., … Warren, S. F. (2010). Automated vocal analysis of naturalistic recordings from children with autism, language delay, and typical development.Proceedings of the National Academy of Sciences of the United States of America, 107(30), 13354–13359. https://doi.org/10.1073/pnas.1003882107 -
Orena, A. J., Byers-Heinlein, K., & Polka, L. (submitted). What do bilingual infants actually hear? Evaluating measures of caregiver speech to 10-month-olds. -
Pae, S., Yoon, H., Seol, A., Gilkerson, J., Richards, J. A., Ma, L., & Topping, K. (2016). Effects of feedback on parent–child language with infants and toddlers in Korea.First Language, 36(6), 549–569. https://doi.org/10.1177/0142723716649273 -
Pellegrino, F., Coupé, C., & Marsico, E. (2011). A cross-language perspective on speech information rate.Language, 87(3), 539–558. -
Ramírez-Esparza, N., García-Sierra, A., & Kuhl, P. K. (2014). Look who's talking: Speech style and social context in language input to infants are linked to concurrent and future speech development.Developmental Science, 17(6), 880–891. https://doi.org/10.1111/desc.12172 -
Romeo, R. R., Leonard, J. A., Robinson, S. T., West, M. R., Mackey, A. P., Rowe, M. L., & Gabrieli, J. D. E. (2018). Beyond the 30-million-word gap: Children's conversational exposure is associated with language-related brain function.Psychological Science, 29(5), 700–710. https://doi.org/10.1177/0956797617742725 - Statistics Canada. (2016). Focus on geography series, 2016 census (Statistics Canada catalogue no. 98-404-X2016001). Ottawa, Ontario, Canada.
-
Suskind, D., Leffel, K. R., Hernandez, M. W., Sapolich, S. G., Suskind, E., Kirkham, E., & Meehan, P. (2013). An exploratory study of “Quantitative Linguistic Feedback” effect of LENA feedback on adult language production.Communication Disorders Quarterly, 34(4), 199–209. https://doi.org/10.1177/1525740112473146 -
Thiemann-Bourque, K. S., Warren, S. F., Brady, N., Gilkerson, J., & Richards, J. A. (2014). Vocal interaction between children with down syndrome and their parents.American Journal of Speech-Language Pathology, 23(3), 474–485. https://doi.org/10.1044/2014_AJSLP-12-0010 -
Thordardottir, E. (2011). The relationship between bilingual exposure and vocabulary development.International Journal of Bilingualism, 15(4), 426–445. https://doi.org/10.1177/1367006911403202 -
Wang, Y., Hartman, M., Aziz, N. A. A., Arora, S., Shi, L., & Tunison, E. (2017). A systematic review of the use of LENA technology.American Annals of the Deaf, 162(3), 295–311. https://doi.org/10.1353/aad.2017.0028 -
Weisleder, A., & Fernald, A. (2013). Talking to children matters: Early language experience strengthens processing and builds vocabulary.Psychological Science, 24(11), 2143–2152. https://doi.org/10.1177/0956797613488145 -
Xu, D., Yapanel, U., & Gray, S. (2009). Reliability of the LENATM Language Environment Analysis System in young children's natural home environment.Behavior Research Methods, 48(3), 1109–1124. https://doi.org/10.3758/s13428-015-0634-8
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