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Left-handed people make up about 10% of the population, and southpaws are often known to be incredibly creative. They may also even have more satisfying sex lives.
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]
Handedness displays a complex inheritance pattern. For example, if both parents of a child are left-handed, there is a 26% chance of that child being left-handed. [23] A large study of twins from 25,732 families by Medland et al. (2006) indicates that the heritability of handedness is roughly 24%. [24]
Owing to cultural and social pressures, many left-handed children were forced to write and perform other activities with their right hands. This conversion can cause multiple problems in the developing left-handed child, including learning disorders, dyslexia, [12] stuttering [13] [14] [15] and other speech disorders. [16]
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.
Left-handers who were forced during childhood to use their right hand showed a larger surface area of the central sulcus in their left hemisphere, which is associated with right-handedness. Also, structures in the basal ganglia such as the putamen also mirrored developmental right-hand dominant individuals in the forced group.
Yes, that is right, err, left. Today marks the day all left handers are able to rejoice and celebrate their lovely feature. We decided to round up a few celebs who share the same trait of being ...
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