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ERIC Number: EJ846239
Record Type: Journal
Publication Date: 2005
Pages: 21
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0042-8639
Early Vocal Patterns in Infants with Varied Hearing Levels
Davis, Barbara L.; Morrison, Helen M.; von Hapsburg, Deborah; Warner, Andrea D.
Volta Review, v105 n1 p7-27 Spr 2005
To evaluate the relative contributions of auditory perceptual access and production system characteristics to early vocalization patterns, three infants identified with hearing loss at birth were followed longitudinally for 11 months beginning at 4 to 6 months hearing age (i.e. time of post-hearing instrument fitting). The infant with moderate-to-severe unaided hearing levels produced canonical syllables comparable to those of infants with typical hearing in the same developmental period; labial consonants with central vowels and coronal consonants with front vowels. The infant whose hearing levels began in the moderate to severe range and progressed to profound during the study exhibited a shift to less mature vocal patterns. The infant with unaided thresholds in the profound range produced a higher incidence of singleton consonants and vowels than canonical syllables, almost entirely labial nasal consonants and neutral vowels. These findings indicate the importance of considering vocal patterning in planning assessment and intervention for infants identified early with hearing loss.
Alexander Graham Bell Association for the Deaf and Hard of Hearing. 3417 Volta Place NW, Washington, DC 20007. Tel: 202-337-5220; Fax: 202-337-8314; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A