Development and evaluation of the reliability of Persian version of double dichotic digit test in girls aged 7 to 11 years

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.