I think introversion and extroversion is an innate properties of each person, but both can be controlled and tricked to some extent that made an extrovert looks like an introvert and visa versa although deep inside they are still an extrovert/introvert.
The difference is more fundamental. It is the vector of libido.
I know I was an introvert by nature, my mother said that I cried a lot more than an my siblings and I always look shy and quite all the time even when someone tried to talk to me.
Those are not per sé indications of introversion. Extroverts can be shy too. I rarely cried as a baby.
I remember back then in kindergarten, every time I would spent my time alone and I will try to avoid the other kids on the playground, everytime people starts to gather near me I would go away to a quiter place where no one is there.
Then I was told by my teacher and parents that I should try socializing for my own good and they said when I got used to it I will feel Ok.
Teachers... They get trained to educate and part of their education, at least here, is a little bit of psychology on the side. But the whole NTI thing is not taken seriously by any psychiatrist really, as far as I can see. They think of it as something hardly relevant. My psychologist says Jung is really not used anymore in any way. It is mostly brains and pills.
Teachers... dumb fucks when it comes to recognizing basic traits in children. Even if the whole MBTI thing is a load of crap, it can still be a tool to teach teachers how to recognize innate traits and in doing so, avoid involuntary mental or emotional abuse. For surely the MBTI system will provide analysis closer to the child's personal psychology than the lack of any assessment.
When I was in grade school we would sit in a circle and each would get a turn telling what they did the day before. I think they do this in all the world. Anyway, when it was my turn I would not have anything to say. I was shy and no matter how the teacher pushed, I rarely said much. One day the teacher said I had to make up a story.
I guess he was afraid I would lack behind in my ability to express myself. But much later in life an IQ test revealed I have a high verbal IQ. It is pretty much top 10% of the land. There was never any danger, but I didn't like to blabber around what I did. My mothger defended me on this occasion, said that some children would talk about how their parents fought... and that I would not. Or that they bought a new sofa, I would not tell that.
My god, I suddenly realize what my mother said is quite revealing. I should thank you for your post because it has lead me to the realization: what mother would tell a teacher in defense of her quiet son that he would not be so open and use a fight between parents as an example??? Did my mother fight with my dad over a new couch? Wtf...
She knew there were problems at home. I remember her fighting my father. Once, she raised a granite ashtray above her head as if to bash his skull in.
Could it be...my god. She knew we were always fighting, that we were dysfunctional, That I was angry as a child and rude to her. She knew but she lied to my teacher to protect her own ass and responsibility, defending I was shy to hide her own ass.
Now I have no trouble talking to others when I need to, but I prefer not to, I felt somewhat tired and fed up everytime I talk with others. It's not that I am afraid to, but it kinda felt like when you are forced to eat something that you actually didn't like at all but you have to, the more you eat it the more you are used to it, yet deep inside you still didn't like it and if given a choice you would instantly choose not to eat it again.
That sounds about right yes. It drains you. And thus the examples you mentioned are indeed in that case indicative. You were shy and the crying MIGHT mean that the interaction with siblings was tiring you out and then babies cry.
