User:GhostRiver/cross

Mixed-handedness
Human handedness exists on a spectrum ranging from complete left- to complete right-handedness. Unlike ambidexterity, where there is no preference between hands, mixed-handed individuals perform some tasks with their left hand and others with their right. Tests such as the Annett Hand Preference Questionnaire assess individuals' degrees of handedness, with Class 1 being purely right-handed and Class 8 purely left-handed. Narrow definitions of mixed-handedness limit the classification to individuals scoring in Classes 5 and 6, while broader definitions include those who fall between Classes 2 and 7.

Mixed laterality
In addition to hand preference, most individuals show a preference for the use of one eye over the other, a tendency called ocular dominance.

Causes
There is some correlation between prenatal stress and cross-dominance, as the offspring of mothers who reported high levels of stress during the third trimester of pregnancy showed higher prevalence of mixed-handedness.

Athletic performance
In baseball, eye–hand cross-dominant batters are better able to track the ball as it crosses the plate. This is because their blind spot TKTKTK.

While eye-hand cross-dominance has no effect on the ability of children to catch objects in both hands, cross-dominant individuals have more difficulties catching objects in one hand.

Musical ability
Some evidence suggests that mixed-handedness is more prevalent in musicians whose instruments require bimanual integration, such as strings and woodwinds, rather than keyboard instruments in which the hands operate independently.