I’ve always wondered why people were usually stronger or more dexterous with one hand. Is the muscle thicker there or something?
In: 18
When you use a limb more often it makes using said limb easier which leads to it being used more often and easier to use.
The [wiki on dominant hand](https://en.wikipedia.org/wiki/Handedness) has a section on causes.
Mostly these are untested opinions based on different theories of cognition and the brain side of the event.
* Language dominance – language, speech and writing are so complex that gross motor skills are in the other side of the brain.
* Genetic factors – if both parents are left handed, the chance of the child being a leftie goes up to 26% (compared to 9% in population)
* Environment – Twin studies indicate that genetic factors explain 25% of the variance in handedness, and environmental factors the remaining 75%
* prenatal hormone exposure – studies show exposure to diethylstilbestrol (synthetic estrogen) were more likely to be left-handed over the clinical control group.
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