RESUMEN
Objectives: The present study aimed to evaluate the psychometric properties of the Persian version of the Phoneme Recognition Test (P-PRT) in normal subjects and cochlear implant (CI) users. Material & Methods: This study includes developing the Persian phoneme recognition test (PRT), determining its validity and reliability, and comparing the results of a control group versus CI users. The test reliability was examined through a test-retest with an approximately five-week interval. In the present survey, 363 subjects were investigated in three stages. The face validity evaluation stage was conducted on 40 subjects. The psychometric properties of the P-PRT were evaluated in 323 individuals (225 normal subjects and 98 CI users). The test-retest reliability was examined in all the 225 subjects in the control group and 40 CI users. Results: The results confirmed the face validity of the P-PRT. No significant differences were observed between the two genders in terms of performance in the P-PRT. Significant differences were observed between the control and CI groups. Evaluating the test-retest reliability suggested perfect reliability (r>0.9) in both groups. Significant differences were observed in the P-PRT between the adults and the 7-year-old subjects compared to other age groups. Conclusion: The P-PRT can be used as a valid and reliable test for clinically evaluating phoneme recognition abilities and monitoring the rehabilitation progress.
RESUMEN
Objectives: This study was conducted to develop the Persian version of the Phonemic Synthesis Test, evaluate its psychometric properties and generate normative data.Design: Test development, including the optimisation of materials, determining content and face validities and assessing the psychometric properties.Study samples: Overall, 425 subjects participated in this study in three different stages. Ten experts participated in the content validity assessment stage. The face validity was determined by taking the views of 17 subjects, including children diagnosed with APD, normal children and experts. The psychometric properties were evaluated with 395 normal children aged 7 to 11, divided into five age groups. All the participants were retested after four weeks for evaluating the test-retest reliability.Results: The results revealed the strong content and face validity of the test. No significant differences were observed between the genders. Significant differences were observed in the quantitative and qualitative scores among the age groups. The Spearman correlation coefficient showed that the scores of the test and retest were strongly and positively correlated (r > 0.9). The findings showed many similarities with the data reported in the original American English Phonemic Synthesis Test.Conclusions: The Persian Phonemic Synthesis Test is a reliable and valid test for auditory processing assessments in Persian-speaking children.