Abstract
Articulation scores in perception of vowels uttered by normal hearing children, articulation scores in production of vowels, articulation scores in perception of vowels uttered by themselves and relations among these three scores were studied in 75 hearing impaired children. Results and conclusions were as follows. 1) Confusion of vowel perception and production showed certain tendencies. 2) Hearing impaired children with high ability of speech perception had the acoustic-phonetic boundaries nearly equal to that of normal hearing children. 3) It required ability to use auditory feedback effectively to improve clearness of speech production.
