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Quantifying Sources of Variability in Infancy Research Using the Infant-Directed-Speech Preference
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In: ISSN: 2515-2459 ; EISSN: 2515-2467 ; Advances in Methods and Practices in Psychological Science ; https://hal-univ-rennes1.archives-ouvertes.fr/hal-02509817 ; Advances in Methods and Practices in Psychological Science, [Thousand Oaks]: [SAGE Publications], 2020, 3 (1), pp.24-52. ⟨10.1177/2515245919900809⟩ (2020)
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A thorough evaluation of the Language Environment Analysis (LENATM) system
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In: ISSN: 1554-351X ; EISSN: 1554-3528 ; Behavior Research Methods ; https://hal.archives-ouvertes.fr/hal-02989519 ; Behavior Research Methods, Psychonomic Society, Inc, 2020, ⟨10.31219/osf.io/mxr8s⟩ (2020)
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A thorough evaluation of the Language Environment Analysis (LENA) system
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In: ISSN: 1554-351X ; EISSN: 1554-3528 ; Behavior Research Methods ; https://hal.archives-ouvertes.fr/hal-03095997 ; Behavior Research Methods, Psychonomic Society, Inc, 2020, 53 (2), pp.467-486. ⟨10.3758/s13428-020-01393-5⟩ (2020)
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Abstract:
International audience ; In the previous decade, dozens of studies involving thousands of children across several research disciplines have made use of a combined daylong audio-recorder and automated algorithmic analysis called the LENA system, which aims to assess children's language environment. While the system's prevalence in the language acquisition domain is steadily growing, there are only scattered validation efforts on only some of its key characteristics. Here, we assess the LENA system's accuracy across all of its key measures: speaker classification, Child Vocalization Counts (CVC), Conversational Turn Counts (CTC), and Adult Word Counts (AWC). Our assessment is based on manual annotation of clips that have been randomly or periodically sampled out of daylong recordings, collected from (a) populations similar to the system's original training data (North American English-learning children aged 3-36 months), (b) children learning another dialect of English (UK), and (c) slightly older children growing up in a different linguistic and socio-cultural setting (Tsimane' learners in rural Bolivia). We find reasonably high accuracy in some measures (AWC, CVC), with more problematic levels of performance in others (CTC, precision of male adults and other children). Statistical analyses do not support the view that performance is worse for children who are dissimilar from the LENA original training set. Whether LENA results are accurate enough for a given research, educational, or clinical application depends largely on the specifics at hand. We therefore conclude with a set of recommendations to help researchers make this determination for their goals.
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Keyword:
[SCCO.LING]Cognitive science/Linguistics; [SCCO.PSYC]Cognitive science/Psychology
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URL: https://hal.archives-ouvertes.fr/hal-03095997/file/main_document.pdf
https://hal.archives-ouvertes.fr/hal-03095997
https://hal.archives-ouvertes.fr/hal-03095997/document
https://doi.org/10.3758/s13428-020-01393-5
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| 5 |
Quantifying Sources of Variability in Infancy Research Using the Infant-Directed-Speech Preference
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In: ADVANCES IN METHODS AND PRACTICES IN PSYCHOLOGICAL SCIENCE, vol 3, iss 1 (2020)
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Day by day, hour by hour: Naturalistic language input to infants.
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Mothers' Work Status and 17-month-olds' Productive Vocabulary.
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Accuracy of the Language Environment Analysis System Segmentation and Metrics: A Systematic Review.
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Point, walk, talk: Links between three early milestones, from observation and parental report.
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| 11 |
Look who's talking: A comparison of automated and human-generated speaker tags in naturalistic day-long recordings.
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What Do North American Babies Hear? A large-scale cross-corpus analysis.
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A Collaborative Approach to Infant Research: Promoting Reproducibility, Best Practices, and Theory-Building.
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Familiarity plays a small role in noun comprehension at 12–18 months
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In: Infancy (2020)
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From babble to words: Infants’ early productions match words and objects in their environment
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In: Cogn Psychol (2020)
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| 16 |
Quantifying Sources of Variability in Infancy Research Using the Infant-Directed-Speech Preference
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In: Advances in Methods and Practices in Psychological Science ; 3 (2020), 1. - S. 24-52. - Sage Publishing. - ISSN 2515-2459. - eISSN 2515-2467 (2020)
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From babble to words: Infants’ early productions match words and objects in their environment
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From babble to words: Infants’ early productions match words and objects in their environment
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The Comprehension Boost in Early Word Learning: Older Infants Are Better Learners
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In: Child Dev Perspect (2020)
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Accuracy of the Language Environment Analysis System Segmentation and Metrics: A Systematic Review
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In: J Speech Lang Hear Res (2020)
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