Background and Objective: The purpose of the present study is to investigate the phonological processing and sentence comprehension in children with CIs and compare them with normal hearing (NH) children. It is also an attempt to study the relation between phonological processing and sentence comprehension in children with CIs. Methods: Twenty children with CIs and twenty NH children between the ages 4 to 6 years were evaluated with the Non-Word Repetition (NWR) task ; Persian Syntax Comprehension Test (PSCT); Persian version of Test of Language Development, Primary, 3rd (TOLD-P: 3); nonverbal part of the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) test; and Vineland adaptive-behavior scale. Results: These results implied that children with CIs may experience difficulties in phonological processing and sentence comprehension. In children with CIs, with increasing their experience in processing of sound, sentence comprehension skills improved. Conclusion: The findings of the present study demonstrated that there is a relationship between the NWR and sentence comprehension. Therefore, paying more attention to the intervention of phonological processing may help children with CIs in sentence comprehension.
The results of the present study demonstrated that the acoustic components including F, intensity, and voice break may be used as indices to discriminate HI infants from NH infants under 2 months of age. These findings can be increased our knowledge concerning the functional mechanisms of the vocal organ in HI and NH infants.
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