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Direct linkVälimaa, Taina T.; Kunnari, Sari M.; Laukkanen-Nevala, Päivi; Ertmer, David J. – Journal of Speech, Language, and Hearing Research, 2019
Purpose: The purpose of this study was to investigate the time course of vocal development in infants and toddlers with bilateral cochlear implants (CIs; bilateral CI group) who are acquiring Finnish and to compare their progress to that of infants with normal hearing and typical development (TD group). Method: Five thousand nine hundred…
Descriptors: Infants, Toddlers, Verbal Development, Assistive Technology
Ertmer, David J.; Jung, Jongmin – Journal of Deaf Studies and Deaf Education, 2012
This investigation examined the time course and sequence of prelinguistic vocal development during the first year of cochlear implant (CI) experience. Thirteen children who were implanted between 8 and 35 months and 11 typically developing (TD) infants participated in this longitudinal study. Adult-child play interactions were video- and…
Descriptors: Infants, Assistive Technology, Verbal Development, Longitudinal Studies
Ertmer, David J.; Jung, Jongmin – American Journal of Speech-Language Pathology, 2012
Purpose: To determine the concurrent validity of the Conditioned Assessment of Speech Production (CASP; Ertmer & Stoel-Gammon, 2008) and data obtained from speech samples recorded at the same intervals. Method: Nineteen children who are deaf who received cochlear implants before their 3rd birthdays participated in the study. Speech samples and…
Descriptors: Assistive Technology, Validity, Speech, Intervals
Ertmer, David J.; Stoel-Gammon, Carol; Ertmer, David J.; Stoel-Gammon, Carol – Volta Review, 2008
Prelinguistic vocal development is "the process by which infants and toddlers produce increasingly more complex, phonetically diverse, and speech-like utterances before they say words on a regular basis" (Ertmer, 2005, p. 85). Research has shown that children with bilateral, moderate-to-profound hearing loss experience delays and deficits in vocal…
Descriptors: Speech, Hearing Impairments, Measures (Individuals), Sensory Aids
