The aim of this study was to investigate lexical effects on recognizing spoken words in Persian-speaking children with hearing impairment by using the PLNTs.
The PLNTs were performed on thirty-three pediatric HAs or CIs users by sound field under spectrally degraded conditions. Thirteen participants completed the experiments. The experiments were repeated by the same examiners under the same conditions two months later with nine of the thirteen participants.
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. The word lexical difficulty (easy/hard words) and the word length (monosyllabic/disyllabic words) were the most fundamental factors, having significant effects on the recognition of spoken words in the children with HAs or CIs in the test/retest phases. Furthermore, the participants’ performance on the PLNTs was similar in both the test and the retest phases suggesting that the PLNTs are a reliable toolkit to assess SWR in Persian-speaking children using HAs or CIs.
The PLNTs, as a sensitive assessment toolkit, can be reliably used to measure the SWR performance under spectrally degraded conditions in Persian-speaking children with hearing impairment using HAs or CIs.