Theories of Left-handedness Vs. Right-handedness
The prevalence of right-handedness is universal across human cultures, although the percentage of right-handedness is smaller in primitive cultures.
Chimpanzees have a similar pattern with right-handedness being more common.
Some studies show preferences for one hand or one body side occurring as early as in the womb and in newborns and infants. These preferences are associated with later handedness. Hand orientation is developed in fetuses, most commonly determined by observing which hand is predominantly held close to the mouth.
Read more about this topic: Handedness
Famous quotes containing the words theories of and/or theories:
“The real trouble about women is that they must always go on trying to adapt themselves to men’s theories of women, as they always have done. When a woman is thoroughly herself, she is being what her type of man wants her to be. When a woman is hysterical it’s because she doesn’t quite know what to be, which pattern to follow, which man’s picture of woman to live up to.”
—D.H. (David Herbert)
“The real trouble about women is that they must always go on trying to adapt themselves to men’s theories of women, as they always have done. When a woman is thoroughly herself, she is being what her type of man wants her to be. When a woman is hysterical it’s because she doesn’t quite know what to be, which pattern to follow, which man’s picture of woman to live up to.”
—D.H. (David Herbert)