Parentese in infancy predicts 5-year language complexity and conversational turns
Naja Ferjan Ramírez1,2, Yael Weiss2, Kaveri K Sheth1
1Department of Linguistics, University of Washington, Seattle, WA, USA.
Journal of Child Language
|February 7, 2023
Summary
Consistent use of parentese (exaggerated speech) in infancy predicts better child language skills at age 5. This highlights the importance of early language environments for later academic success.
Area of Science:
- Developmental Psychology
- Linguistics
- Child Language Acquisition
Background:
- Parental input significantly influences early language development.
- Long-term effects of specific parental speech characteristics remain under-researched.
Purpose of the Study:
- To examine the impact of parental speech quantity, parentese, and turn-taking in infancy on child language outcomes at 5 years.
- To determine if consistent use of parentese predicts later language proficiency.
Main Methods:
- Longitudinal study using daylong LENA recordings from 44 English-speaking infants at multiple time points from 6 to 24 months and again at 5 years.
- Analysis focused on parental quantity of speech, use of parentese, and conversational turn-taking.
- Child language skills assessed at kindergarten entry (age 5).
Main Results:
- Consistent and high use of parentese in infancy strongly predicted greater lexical diversity at age 5.
- Consistent parentese use also predicted longer mean length of utterance and more frequent conversational turn-taking.
- Parental quantity of speech and turn-taking in infancy did not show the same predictive power.
Conclusions:
- A high-quality language learning environment, characterized by consistent parentese use, is crucial for robust language development.
- Early parental speech patterns have lasting effects on children's language skills, impacting readiness for formal schooling.
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