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:: Volume 22, Issue 1 (21 2013) ::
aud 2013, 22(1): 32-40 Back to browse issues page
Phonetic discrimination of Persian vowels in children with severe hearing loss
Shiva Ebrahimian 1, Amene Ranjbar2, Mehri Safari3, Firooz Sadighi2, Mahboobe Saadat2
1- Department Department of Speech therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
2- Department of Linguistics and Foreign Languages, Faculty of Literature and Humanities, Shiraz University, Shiraz, Iran
3- Fars Cochlear Implant Center, Shiraz, Iran
Abstract:   (9039 Views)

Background and Aim: Hearing-impairment leads to problems in language perception which in turn results in difficulties in language production. The present study investigated hearing-impaired children&aposs ability to discriminate Persian vowels. It aimed to describe the extent to which children have difficulty comprehending and discriminating phonetic features of vowels.
Methods: To fulfill this aim, a researcher-made test, which was based on the Auditory Perception Test 2001, investigated the phonetic discrimination of vowels in Persian-speaking and hearing-impaired children aged five to eight years. The test has two sections, auditory-visual and just auditory discrimination of vowels, which included five subtests assessing discrimination of front and back vowels. Through this test, the phonetic discrimination ability of 22 hearing-impaired children was evaluated. The gathered data were analyzed using matched t-test and repeated measures ANOVA.
Results: The findings showed that there is a significant difference between correct responses to the sections on front and back vowels (p<0.05). The audio-visual test showed that the /â/ vowel is easier to discriminate than other back vowels. Moreover, in the auditory test the /â/ vowel had the highest mean. The audio-visual test showed that the /i/ vowel is easier to discriminate than the other front vowels (/e/ /æ/). However, the discrimination of front vowels in the auditory test was the same.
Conclusion: The results revealed that back vowels were more easily discriminated than front vowels by hearing-impaired children.

Keywords: Phonology, vowel discrimination, hearing-impairment
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Type of Study: Research |
Received: 2011/12/31 | Accepted: 2012/08/1 | Published: 2013/10/15
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Volume 22, Issue 1 (21 2013) Back to browse issues page
شنوایی شناسی - دانشگاه علوم پزشکی تهران Bimonthly Audiology - Tehran University of Medical Sciences
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