Right-handed
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One who is right-handed is more dextrous with one's right hand than with one's left hand: one will write with their right hand, and probably also use this hand for tasks such as personal care, cooking, and so on. Approximately 90% of the population is right-handed, while most of the remaining are left-handed. A very small percentage of the population can use both hands equally well; a person with this ability is deemed to be ambidextrous.
Throughout history being right-handed was considered normal (the Latin word dexter meant "right" and is associated with skill, while the Latin word sinister meant "left" and is associated with wickedness). Hence the many prejudicial connotations became associated with right handedness: skilful, diligent, dextrous, deft. The associated left brain hemisphere that is said to be more active in right-handed people, has been found to be correlated with linguistic and logical skill.
In the past, many schools around the world forced left handed children to write right-handed. A good number of technological devices are made primarily for right-handers, including scissors and guitars. Examples of everyday objects primarily designed for right-handers include refrigerators and padded kitchen mittens (padded on one side only). Military rifles designed to be shot from the right shoulder only have resulted in injuries from spent cartridge casings hitting left-handers in the eye and head.
A person may also describe somebody as his right hand man, which means that he relies heavily on this person, deriving from the importance and superiority place on the right over the left by many civilizations.
Being right-handed does not always mean that the favored foot is also on the right side. When playing soccer for instance, many people prefer using their left foot rather than the right, despite being right-handed.
Some doctors say it starts in the pregnancy stage when the baby sucks either its left or right thumb at its 24th day
Many people deem right-handed people to be "intellectually challenged" though there is no proof of this.
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