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Spoken language development in children following cochlear implantation
John K Niparko1, Emily A Tobey, Donna J Thal
1Department of Otolaryngology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. jnipark1@jhmi.edu
JAMA
|April 22, 2010
Summary
Cochlear implantation significantly improved spoken language skills in young children with hearing loss, exceeding baseline predictions. Early implantation and factors like residual hearing positively influenced language acquisition over three years.
Area of Science:
- Pediatric audiology
- Speech-language pathology
- Developmental pediatrics
Background:
- Cochlear implantation offers an alternative to hearing aids for children with severe to profound sensorineural hearing loss (SNHL).
- It aims to facilitate spoken language development in this population.
Purpose of the Study:
- To prospectively evaluate spoken language acquisition in young children after cochlear implantation.
- To compare language development trajectories with pre-implantation baselines and identify influencing factors.
Main Methods:
- A prospective, longitudinal study assessed 188 children implanted before age 5 over 3 years.
- Language comprehension and expression were measured using the Reynell Developmental Language Scales.
- A control group of 97 hearing children was included for comparison.
Main Results:
- Implanted children demonstrated significant yearly improvements in spoken language comprehension (10.4 points) and expression (8.4 points) beyond baseline predictions.
- Younger implantation age and shorter duration of hearing deficit correlated with steeper learning rates.
- Greater residual hearing, positive parent-child interactions, and higher socioeconomic status were associated with better language gains.
Conclusions:
- Cochlear implantation in young children is linked to enhanced spoken language learning compared to pre-implantation expectations.
- While beneficial, language outcomes did not consistently reach age-appropriate levels within the 3-year follow-up.
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