Abstract
Introduction: Populations are categorized as right-handed, ambidextrous, and left-handed; but handedness must be understood as having borderlines within its continuum. Typical measures of handedness based on hand use preference or hand performance testing give results which indicate no exclusive categories for hand dominance. Training of preclinical medical students in the performance of clinical techniques certainly requires the high levels of manual dexterity and invaluable hand-eye co-ordination, both of which are expected to influence the end result of hand dominance testing. However, the assessment during skills training is mostly subject to the efficiency of carrying out a given procedure, which inevitably depends upon the individual's dominant hand. Material and Methods: In this analytic cross-sectional study, the modified Edinburgh Handedness Inventory for hand preference and the Tapley and Bryden Dot-filling Tasks for hand performance were evaluated one against the other, to conclusively categorize hand dominance amongst 162 preclinical medical students. Results: Hand performance dominance was not dependent on subject gender. Tapley and Bryden Dot-filling Tasks and Geschwind Score (GS) Edinburgh Handedness Inventory (EHI) hand preference categories showed statistically significant differences (χ2 = 142.293, P
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