LENA automated adult word counts are reliable for Spanish-language home environments¶

Claim · All claims
Evidence · 1 study · associational r2 · q2 · i3 large
Currency · newest study 2013 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2016: tool and model accuracy changes quickly

Subclaims¶

q2 i3 Automated LENA estimates of adult words correlated highly (r = .80) with native Spanish-speaker transcriber counts in 60-min samples from 10 home recordings. → Weisleder Adriana 2013

Evidence¶

Weisleder Adriana 2013¶

Weisleder Adriana, Fernald Anne. (2013). Talking to children matters: Early language experience strengthens processing and builds vocabulary. Psychological Science. https://doi.org/10.1177/0956797613488145

q2 · i3 · associational · r2

Validation sub-study: 60-min samples from 10 of the home recordings were transcribed by native Spanish-speakers uninvolved in the research, and automated LENA adult-word estimates were compared with transcriber counts, confirming reliable estimates in Spanish-language environments.

"This analysis revealed a high correlation between automated estimates of adult words and transcriber-based word counts (r = .80)"

Discussion¶

Related Claims¶

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• The number of conversational turns is more closely associated with children's language skills and language-related brain function than the raw number of words heard, regardless of family income or education. — related
• Child-directed speech varies dramatically among low-SES families, up to an 18-fold difference, largely independent of maternal education and overall talkativeness — related