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Older Women Have More Left-Handed Babies. According to one Canadian study, women in their 30s and 40s were far more likely to have left-handed children than younger women. A study of 2,228 college ...
For example, if the incidence of female left-handedness was 10%, then the incidence of male left-handedness would be approximately 12% (10% incidence of left-handedness among women multiplied by an odds ratio of 1:1.23 for women:men results in a 12.3% incidence of left-handedness among men). [94] [clarification needed]
An older study found that left-handed people were better at "divergent thinking", and a more recent research cites lefties have better working memories and mental flexibility. 5. Don't get too ...
Conversely, left-handed women earn about 7.5% less than right-handed women. [ 91 ] [ 92 ] During the residency period in operation theatres, right-handed surgeons may be irritated by left-handed residents, and left-handed residents have lower performance scoring compared to their right-handed counterparts.
If the parents are both right-handed, in dizygotic and monozygotic twins there is a 21% chance of one being left-handed. If one parent is left-handed, in DZ and MZ twins there is a 57% chance of one being left-handed. If both parents are left-handed, it is almost certain one twin will be left-handed. [citation needed]
Only 10 percent of the population is left-handed. While there may not be many of them, being left-handed sure does come with some surprising perks! 14 things you never knew about left-handed people
However, the results were that there were significantly more left-handers amongst male mathematics undergraduates than male non-mathematics undergraduates (21% versus 11%) and significantly more non-right-handers (44% versus 24%), and that there was a similar but smaller left-handedness difference for female undergraduates (11% versus 8%).
Left-handed people only make up about 10% of the world's population — so you might be surprised to learn how many of them have been world leaders, artists, well-known athletes, award-winning actors.