© American Speech-Language-Hearing Association
The Effect of Age at Cochlear Implant Initial Stimulation on Expressive Language Growth in Infants and Toddlers
1 University of Iowa, Iowa City
j-tomblin{at}uiowa.edu
This study examined the growth of expressive language skills in children who received cochlear implants (CIs) in infancy. Repeated language measures were gathered from 29 children who received CIs between 10 and 40 months of age. Both cross-sectional and growth curve analyses were used to assess the relationship between expressive language outcomes and CI experience. A beneficial effect of earlier implantation on expressive language growth was found. Growth curve analysis showed that growth was more rapid in children implanted as infants than those implanted as toddlers. Age at initial stimulation accounted for 14.6% of the variance of the individual differences in expressive language growth rates.
KEY WORDS: cochlear implants, infants, language growth, early hearing detection and intervention, growth curve analysis
Submitted on April 12, 2004
Revised on September 14, 2004
Accepted on December 20, 2004
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