Conclusion: Our confidence intervals at a 95% confidence level show that the average IQ for a left handed person is between 117.73 and 127.19 and for a right handed person it is between 109.9 and 123.5.
Babe Ruth. The Babe is probably the most famous left-handed slugger of all-time.
Left-handed people are said to be good at complex reasoning, resulting in a high number of lefty Noble Prize winners, writers, artists, musicians, architects and mathematicians. According to research published in the American Journal of Psychology, lefties appear to be better at divergent thinking.
Innovators. Billionaire Bill Gates and Facebook founder Mark Zuckerburg are left-handers.
The results, published in Frontiers, show that left-handers outperformed the rest of the sample when the tasks involved difficult problem-solving, such as associating mathematical functions to a given set of data. This pattern of results was particularly clear in male adolescents.
But handedness has its roots in the brain—right-handed people have left-hemisphere-dominant brains and vice versa—and the lefties who claim Einstein weren't all that far off. While he was certainly right-handed, autopsies suggest his brain didn't reflect the typical left-side dominance in language and speech areas.
In fact, one of the more unusual hypotheses to explain the rarity of left-handedness is that a genetic mutation in our distant past caused the language centres of the human brain to shift to the left hemisphere, effectively causing right-handedness to dominate, Alasdair Wilkins explains for io9 back in 2011.
Special or not, lefties are born, not made: Genetics are at least partially responsible for handedness. Up until last year, it was assumed that hand preference comes from asymmetrical genes in the brain—two hands, two brain hemispheres, one is dominant.
Left-handedness occurs in about 8% of the human population. It runs in families and an adoption study suggests a genetic rather than an environmental origin; however, monozygotic twins show substantial discordance.
Q: Was Michael Jackson is left-handed? A: No. Q: Does Michael needed glasses for example to read? A: Yes, Michael needed glasses to read.
Wright and Hardie (2012) found that left-handers reported higher levels of state anxiety but there was no difference in trait anxiety. They also demonstrated that when Trait Anxiety was controlled for, left-handers still showed a higher level of state anxiety compared to right-handers.
The hypothesis is that some lefties use different parts of their brain to process tasks, and this could give them some subtle advantage when it comes to maths. But while some studies have shown that left handers perform slightly better at arithmetic, just as many papers have found no difference between the two groups.
Left-handers, rejoice! Marshall Bruce Mathers III (A.K.A. Eminem) is an esteemed member of your crew.
Eleven percent of the population is born left-handed, and if they seem different, it's because they are! Learn six tips for raising a left-handed child.
It was Bob Charles, the New Zealand golfer who went on to earn membership in the World Golf Hall of Fame. And the first lefty win happened on April 21, 1963, when Charles closed out his win in the Houston Classic. He won by a single stroke over runner-up Fred Hawkins.
Hand preference probably arises as part of the developmental process that differentiates the right and left sides of the body (called right-left asymmetry). More specifically, handedness appears to be related to differences between the right and left halves (hemispheres ) of the brain.
They are usually good at sports when in a one-on-one face-off. In games like baseball, boxing, fencing and tennis, left-handers often have an edge over their right-handed opponents who are used to playing with right-handed players mostly. Left-handers have typing advantages.
Sometimes people who are left-handed are called many different things, “Southpaws”, "Lefties", and other simply mean names, like "Weird" or "Strange".
However, post-hoc exploration of their and other sets of data has shown that there is an apparent tendency for left-handedness to be more prevalent in the period March-July than in the period August-February.
If both parents were left-handed, the chance of their offspring also being left-handed was highest: 26 percent. This indicates that children of two left-handed parents have a higher chance of being left-handed, but also that three-quarters of them are still right-handed.
If two parents are right-handed, their offspring has a 10% chance of being left-handed. However, if one or both parents are left-handed, the chance of their child being left-handed becomes higher at 18 to 22% and 27%, respectively.
The other hand, comparatively often the weaker, less dextrous or simply less subjectively preferred, is called the non-dominant hand. In a study from 1975 on 7,688 children in US grades 1-6, left handers comprised 9.6% of the sample, with 10.5% of male children and 8.7% of female children being left-handed.
Both left-handed pitchers and batters do better in baseball. Since the majority of hitters are right-handed, lefty pitchers are considered valuable. A curveball from a left-hander breaks inside on a righty – a harder pitch to hit.