For a long time, many believed left-handed people were smarter or had more developed right brains. In reality, this isn't necessarily true. Left-handedness Doesn't Necessarily Mean Greater Intelligence—Don't Be Misled Anymore (Public Health Network) People often say "left-handed people are smarter." Especially now, when some parents discover their child is left-handed, they often feel smug.It's said that throughout history, many famous figures were left-handed, such as Napoleon, Clinton, Newton, Einstein, Bill Gates, and Chaplin. So are left-handers truly smarter or more right-brain dominant as legend suggests? Should parents correct their child's hand preference if they're left-handed?
High Maternal Stress During Pregnancy Increases Left-Handedness Risk
Experts explain that while many believe left-handedness is inherited, authoritative research indicates only about 25% of cases are genetically determined. The majority of left-handed individuals are influenced by other factors.Recent authoritative international research indicates that if a mother experiences significant mental stress during pregnancy—such as sudden emotional shocks like unemployment or the death of a family member—the child is more likely to be left-handed after birth.
IQ is unrelated to handedness
Experts explain that many people have long believed left-handed individuals are smarter or have more developed right brains. In reality, this is not the case.The most authoritative research data confirms that the IQ difference between left-handed and right-handed individuals is only about 1%, meaning there is virtually no difference. The claims that "left-handed people are smarter" or "left-handed people have more developed right brains" are merely unsubstantiated myths.Left-handed individuals may be more susceptible to psychological disorders. Experts point out that left-handed people not only may not have higher IQs than others, but they may also be more prone to conditions such as ADHD, mental illness, psychological disorders, reading difficulties, and developmental disorders.However, left-handed individuals may possess certain advantages in specific areas. For instance, research suggests they often demonstrate greater creativity and effectiveness in creative professions.
Regarding whether left-handedness should be corrected, experts suggest parents should provide appropriate guidance to ensure both hands develop equally. This approach supports healthier growth, though forceful methods should be avoided when adjusting habits.