Are people that are quiet biologically and genetically born that way?

I'm guessing that people that are loud versus people that are quiet are gifted with more lung power or lung capacity to talk louder or talk more often than people that are quiet. Do you think body biological makeup has any bearing on a person whether they're quiet or not?



Are people that are naturally quiet usually have other people in their family that are quiet too? I assume this could be true because genetics could play a role in how people interact around other people.Are people that are quiet biologically and genetically born that way?
Possibly but I know it can be changed when you are a child by your parents chiding and criticising until you are squashed. Children were to be seen and not heard 50 years ago so that is what many of us became quiet! Sad.Are people that are quiet biologically and genetically born that way?
some people are born quietly %26amp; some quiet people are quiet because they got some bad history in there life so they get depressed %26amp; knocked down. but there is a lot of psychiatric what they can fix this problems %26amp; build them back up
i think its largely in the way children are raised, as to their social abilities, as well as the rest of their being. I think even after maturity, people still change and learn new things and their social skills can develop further and change too. If there are other people in the family that are also quiet, it could well be environmental rather than genetic, or perhaps a mixture of both. I would think it is definetly possible that it could be genetic though.