Abstract

Background: Cincinnati Auditory Processing Inventory is used to examine difficulties with listening abilities among adolescents and adult groups and to investigate necessary skills for accurate processing of auditory information. This study aimed to develop the Persian version of the University of Cincinnati Auditory Processing Inventory (P-UCAPI) questionnaire. Methods: A methodological and cross-sectional study was conducted on 121 adolescents and adults with normal auditory skills in the age range of 13- to 53-year-old in Babol city in Iran. The translation procedure was preceded according to World Health Organization (WHO). Then, item analysis, face validity, test-retest, and internal consistency were calculated. The descriptive statistics of the total score of the P-UCAPI and its subscales (listening and concentrating, understanding speech, following spoken instruction, attention, educational assistance, and other) were measured. In addition, the performance of males and females on this questionnaire was compared. The level of significance was established at (p<.05). Results: A panel including two speech pathologists and one audiologist performed the content validity of the P-UCAPI and reached a consensus on all the items of the questionnaire. To investigate the need for item reduction, a Cronbach's alpha coefficient did not change with removing of each item so, none of the items were eliminated. The mean value and standard deviation of the participants for the total scores of the P-UCAPI were obtained at 53.04 +/- 10.77. The mean values and standard deviations of subscales of the P-UCAPI were: listening and concentrating (13.51 +/- 4.89), understanding speech (5.77 +/- 1.73), following spoken instruction (5.74 +/-.0), attention (8.70 +/- 1.24), education assistance (5.68 +/- 1.85), and other (13.98 +/- 3.84). Males and females had similar performance on P-UCAPI (p-value=.16) and its subscale including listening and concentrating (p-value=.24), understanding speech (p-value=.60), following spoken instruction (p-value=.77), attention (p-value=.96), education assistance (p-value=.71), and other (p-value-.72). The findings of the item analysis revealed that the value of Cronbach's alpha coefficient was not obtained higher than .83 after deleting each item. The value of KC for test-retest reliability of P-UCAPI was .62 ranging from .38 to .85. For the internal consistency, the value of the alpha coefficient value was (alpha.=.82). Conclusion: P-UCAPI as a translated instrument with satisfactory values for reliability is appropriate to measure the central processing skills of normal adults in Iran.