The purpose of this study was to investigate normative expectations on the dichotic listening test in order to determine the influence of sex and development on dichotic listening performance. Thirty 5-to-6 year olds, thirty 11-to-12 year olds, and 30 adults, 15 males and 15 females in each group, were tested by using consonant-vowel dichotic stimuli. There were no significant differences between males and females except for the 11- to 12-year-old females who were significantly more accurate than the males. Degree of ear asymmetry did not differ among the three age groups; however, the adults and 11-to-12 year olds were significantly more accurate than the 5-to-6 year olds. Guidelines are suggested for the interpretation of dichotic listening test data.

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