Tehran University of Medical Sciences Auditory and Vestibular Research 2423-480X 25 1 2015 12 27 1 6 EN Nariman Rahbar Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran AND Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran Masoud Motasaddi Zarandy Otorhinolaryngology Research Center, Tehran University of Medical Sciences, Tehran, Iran Hassan Ashayeri Department of Postgraduate, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran Behrooz Mahmoodi Bakhtiari Department of Dramatic Literature, Faculty of Art, University of Tehran, Tehran, Iran Mohammad Kamali Rehabilitation Research Center, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran 2015 11 01 2015 11 02 Background and Aim: Hearing impaired students experience binaural hearing like normal peers and school age is challenging time for using dichotic listening. Lack of research was found on relationship of Persian hearing impair­ed children with central auditory processing (CAP). One of the aims of this study was a comparison between Persian dichotic digit test (DDT) score in children with mild and moderate hearing loss (HL) and normal ones. Methods: Forty one hearing impaired children (16 mild HL and 25 moderate HL) and 41 subjects with normal hearing all between 7-12 years of age, in both genders (sex has no effect on this test), were selected and tested Persian DDT. Results from Right Ear/Left Ear scores, Right Ear Advantage (REA) and age effect were collected and compared with normal subjects. Results: Results of this study showed the average of 89.07% correct scores in right ear and 82.24% in left ear. The difference between both ears was 6.83%. Comparison of the right ear correct scores and left ear correct scores showed a significant REA (p<0.05). But no significant differences were seen in comparing mild and moderate hearing loss groups (p>0.05). Conclusion: This study pointed out which Persian DDT is not affected by mild-to-mode­rate sensory neural hearing loss. However, you­nger children need more interval time between two items to respond to the tests. https://avr.tums.ac.ir/index.php/avr/article/view/67 https://avr.tums.ac.ir/index.php/avr/article/download/67/35