Why do people have “dominant” hands and/or feet?
In: Biology
The official scientific answer is that we’re not sure. It’s likely a mix of genetic predispositions and learned behavior. If you’re learning something from scratch, you can fairly easily learn to do it with either hand regardless of your normal preference. Baseball has plenty of players whose throwing and batting sides don’t match, and nearly everyone that plays a guitar holds it the same regardless of their dominant hand.
On the genetic side, your processing center for language and other high level functions are on the left side. That being the dominant half of your brain may bias you towards being right handed because the human body is stupid and each side of the brain controls the opposite side of the body. It’s speculation, but based on studying families it’s likely that 70-80% of people are genetically wired to be right handed. The remaining people have a random dominant hand so we end up with 10-15% of people being left handed.
it’s the hand they’re taught to write with and use the most. lot of kids do what their parents do from watching them and trying to mimic it. monkey see, monkey do. mom or dad does this, so the kid wants to too.
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