A Case Report of Consonant Articulation Development using Labials in a Normal Child as Compared with Articulation Development in a Child with Cleft Palate

Abstract

We investigated the developmental process of Japanese consonant articulation using labials in a normal child and in a child with cleft palate.
We tape-recorded meaningful speech sounds of the normal child from the age of 1 year and 1 month to 9 years. Afterward, we reproduced and described them. We then did the same for the child with cleft palate from the age of 1 year and 8 months to 6 years and 1 month.
The normal child articulated bilabials earlier than dentals or alvelolas in the process of developing consonant articulation, she articulated glottal stops in place of bilabials. Through analysis of consonant articulation developmert, we found the same tendencies in the child with cleft palate.