Tehran University of Medical Sciences Auditory and Vestibular Research 2423-480X 24 3 2015 10 04 164 170 EN Batool Shahmir Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran Fahimeh Hajiabolhassan Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran Ghassem Mohammadkhani Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran Ali Akbar Tahaei Department of Audiology, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran Shohreh Jalaie Biostatistics, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran 2015 10 04 2015 10 04 Background and Aim: The double dichotic digit test (DDT) is a simple test for assessing and screening auditory processing system. The purpose of this study was to develope a double DDT, in Persian language and find its basic norm values in girls aged 7 to 11 years. Methods: The Persian version of double DDT is composed of 3 different 25 numerical lists. Numbers in each list were recorded dichotically. The present cross‐sectional study was performed on 200 girls aged 7 to 11 years. Test-retest reliability was assessed in 30 of the study subjects. Results: The mean scores of the right and left ears in the free recall condition increased from 92.33 and 86 percent in 7 year olds to 99.75 and 98.16 percent in 11 year olds and in the directed condition from 95 and 88.80 percent in 7 year olds to 100 and 98.41 percent in 11 year olds. In the free recall condition the right ear advantage value decreased from 6.33 percent in 7 year olds to 1.58 percent in 11 year olds, respectively and in directed recall condition, decreased from 6.91 percent in 7 year olds to 1.59 percent in 11 year olds. The test has as high consistency reliability (p>0.05). Conclusion: According to results of the present study, the Persian version of the double DDT has suitable reliability for assessing the central auditory processing system in 7 to 11 year old girls. https://avr.tums.ac.ir/index.php/avr/article/view/19 https://avr.tums.ac.ir/index.php/avr/article/download/19/18