Objectives: To develop normative data for normal young adults, to interpret patients’ CMDT score objectively and select the employees who require manual dexterity. Methods: Participants were sixty normal subjects (thirty males and thirty females) between ages of 19 and 26. Averaged performance duration of normal subjects on the CMDT was recorded and Pearson Correlation Coefficients between subtests of CMDT were analysed. Results: Women’s performance duration was shorter than that of men’s, but the percentile scores were different according to the percentile. Pearson Correlation Coefficients were significantly different between the subtests, but not in the results of comparing ‘displacing’ and ‘one hand turning and placing’. Conclusions: These data will assist occupational therapists and others to interpret patients’ CMDT scores objectively.