laterality

noun

lat·​er·​al·​i·​ty ˌlat-ə-ˈral-ət-ē 

plural lateralities

: preference in use of homologous parts on one lateral half of the body over those on the other : dominance in function of one of a pair of lateral homologous parts

studies of the laterality of individuals in the performance of different tasks

—K. C. Garrison