Abstract

Hand of Excellency is one of human features that is defined as the unequal distribution of proper motor skills between left and right hand. In investigation of the effective elements that cause the Excellency and dominance of one organ over the other organs, many studies and researches from the post have been proceeded that in this research, it is tried that some of them be implied. The aim of this research, is stating of concept and theories and the advantages of hand of excellency that can have many effects in sport, the theories of hand of excellency include of theories of bio-knowing, bio- environmental theories, meta sound theory, theory of being heritage of hand of excellency, theory of social pressure of parents and sociology theory of hand of excellency. Finally, the tools of measuring of hand of Excellency state that each person with this test can find that in which one of the groups of hand of Excellency is located.

Keywords: Hand of excellency; Ambidextrous