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Left-handers are the odd ones out. Sure, lefties make up about 10 percent of the population — but, frankly, it seems like society has forgotten about them. Just consider all of the right-handed gadgets, awkwardly designed desks, and cooking tools that fit comfortably only in your right hand.
What causes someone to become a southpaw?
Women's sports includes amateur as well as women's professional sports, in all varieties of sports. Female participation and popularity in sports increased dramatically in the twentieth century, especially in the last quarter-century, reflecting changes in modern societies that emphasized gender parity. Jul 15, · No Child Left Behind = All Boys Left Behind. 07/15/ am ET Updated Dec 06, Boys are being admitted to colleges with lesser qualifications than girls to keep the gender balance. While Goodwill is definitely one of the biggest thrift stores out there, they don't wash their clothes before putting them out on the floor (but people who donate are encouraged to wash all their donations before dropping them off). Don't let this discourage you though-- I've found some really great things at Goodwill.
And researchers have found different brain wirings in righties vs. But no matter what it is that drives someone to use their antipodal paw, science has also uncovered a particular set of personality traits that left-handed people tend to have.
But researchers have found that in populations with certain mental disorders, that rate goes up. Previous studies have found that people with psychosis had a 20 percent likelihood of being left-handed, though a small study in the journal SAGE found the rate of psychotic lefties may be even higher.
For those with mood disorders such as depression or bipolar disorderthe rate of left-handedness was close to average, at 11 percent. Researchers theorize brain laterality plays a role. Your Handedness May Determine Your Health Scientists have also found an increased risk for dyslexia, ADHDand certain mood disorders in left-handed people, according to a study published in Pediatrics.
Researchers are not exactly sure how to explain this phenomenon, but many believe it's related to how the brain is wired. Your noggin is divided into two halves: Most people righties and lefties alike rely on the brain's left hemisphere for tasks like language functioning.
But about 30 percent of left-handed folks are either partial to the right hemisphere or have no dominant hemisphere at all.
According to scientists, having one hemisphere dominate is much more efficient, which is why some left-handers are at increased risk for learning impairments and brain disorders.
But lefties may be in luck when it comes to other health conditions: Results of a large survey published in the journal Laterality found that left-handers had lower rates of arthritis and ulcers. Lefties Hear Speeches Differently People who use their left hands when listening may more easily hear slowly-changing sounds than those who use their right hands, according to a study from Georgetown University Medical Center.
The researchers who conducted the study, presented at Neurosciencefound that the left and right hemispheres of the brain specialize in different kinds of sounds. The left hemisphere, which controls the right hand, likes rapidly-changing sounds like consonants, while the right hemisphere, which controls the left hand, likes slowly-changing sounds like syllables or intonation.
According to the researchers, if you're waving an American flag while listening to a presidential candidate, the speech will sound slightly different to you depending on whether you're holding the flag in your left or right hand.
The research could ultimately result in better treatment for stroke and language disorders.
An earlier version of this post stated that people who use their left hands may more easily hear rapidly-changing sounds that those who use their right hands. In fact, left-handers hear slow-changing sounds better. University of Kansas researchers recently determined the handedness of ancient humans by studying — oddly enough — their teeth.
The study, which was published in the journal Laterality, found that when our great-great-great-great- you get the point -grandfathers processed animal hides, they would hold one side of the carcass in one hand and the other in their mouth.Women's sports includes amateur as well as women's professional sports, in all varieties of sports.
Female participation and popularity in sports increased dramatically in the twentieth century, especially in the last quarter-century, reflecting changes in modern societies that emphasized gender parity.
Boys and children assigned male at birth, on the other hand, get the message that to really establish their position as a hetero male in society they need to exhibit physical strength and appear dominant over others.
Jul 15, · No Child Left Behind = All Boys Left Behind. 07/15/ am ET Updated Dec 06, Boys are being admitted to colleges with lesser qualifications than girls to keep the gender balance.
Lefties Have a Higher Risk of Psychosis. Lefties make up about 10 percent of the general population. But researchers have found that in populations with certain mental disorders, that rate goes up. A study from the Indian Journal of Physiotherapy found that the dominant hand is 10% stronger than the non-dominant one.
However, this was for right-handed patients only. For left handed, this rule did not apply. Dominance hierarchy is a type of social hierarchy that arises when members of a social group interact, to create a ranking system. In social living groups, members are likely to compete for access to limited resources and mating ashio-midori.com than fighting each time they meet, relative relationships are formed between members of the same .