Document Type : Original Articles
Authors
1 Department of Speech Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
2 Rehabilitation Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
Abstract
Background: The current study investigated lexical effects on the recognition
of spoken words in Persian-speaking children with hearing impairment using
Persian lexical neighborhood tests (PLNTs).
Methods: The research was administered as a cross-sectional study. PLNTs
were performed on thirty-three pediatric hearing aid (HAs) or cochlear implant
(CIs) users by sound field under spectrally degraded conditions. Thirteen 7-to-
13-year-old (8 boys and 5 girls) participants completed the experiments, which
were administered in a 3 × 4-m acoustic room using a sound field. The order of
the tests in each session was from the lowest to the highest signal-to-noise ratios
(SNRs), ranging from − 2 to 4 dB. The experiments were repeated by the same
examiners under the same conditions two months later with nine of the thirteen
participants.
Results: Pediatric users of HAs or CIs could not optimally recognize spoken
words in noise, specifically when they had to recognize words through an
auditory-only modality. There was a significant difference in the participants’
SWR performance on the PMLNT-easy versus the PMLNT-hard and the PDLNTeasy
versus the PDLNT-hard based on independent samples T test (p <0.001).
There was a significant difference in the participants’ SWR performance on the
PMLNT-easy versus the PDLNT-easy and the PMLNT-hard versus the PDLNThard
based on the independent samples T test as well (p <0.001). Accordingly,
word lexical difficulty (easy/hard words) and word length (monosyllabic/
disyllabic words) were the most fundamental factors having significant effects
on the recognition of spoken words in children with HAs or CIs in the test/
retest phases.
Conclusion: The PLNTs, as a valid assessment toolkit, can be reliably used to
measure SWR performance under spectrally degraded conditions in Persianspeaking
children with hearing impairment using HAs or CIs.
Keywords
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