Is it possible for 2 Si parents to spawn 2 Ni children?

Yes. Pretty sure it could happen and has happened in the case of you and your family.

I mean 2 brunettes can have blonde children.

 

I can't go into complex theories (genes, nature vs nurture, childhood memories, outside influences) because I don't know much; but I think it's very possible. It depends on how well you both accept your parents' aspects of personality, and how well they show it to you.

Do you reject some (or most, or all) of your parent's teaching? Do you find something wrong with their actions and beliefs when you're young? How do they show it to you? How well do you receive them?

From personal experience, part of my upbringing was driven by my rejection of my ESTJ father's beliefs (mainly; overreliance to money, and moral ambiguity) and rejection of my ENFP mother's beliefs too. If I were to accept their beliefs, I would grow up differently (best guess ; ISTJ / INFP)

For another example, parents who are cold and detached towards their children could make another cold child, or a child that tries to be warm and compassionate so they 'escape from their parent's shadow'.

 

It's not all destined from birth, even if it is Ni could simply be recessive. Your Si parents could have the Ni gene but the Si dominated it. Yet you and your sister were ulra lucky and recieved a double Ni helping.

Anyway I was always told that if you want to know where you come from you should look at your grandparents.

 

Hmm, I personally believed it's a mixture of both, hence me asking it.
Perhaps the process itself is the same from birth, but the traits from which it manifested can be different from time to time.
Someone told me that MBTI (in terms of personality) is quite fluid until maturity, and especially fluid in puberty.. If only I can find the source. >_<

Hmm. What traits do you think you have from them? It's interesting to check traits from grandparents, but there are cases when children ended up following their grandparents instead of parents for some reasons.

Just saying that rebelling from peers can also affect one's personality. Especially if you put a lot of focus in it.. *glances aside* Also, I believe being rebellious is one traits of Ni so in some ways, both you and your sister can develop Ni that way.
The spilt milk is part of Si; To see something done right in a specific, proven way. And it's more often shown in the small stuffs.

 

Studies into personality development consistently report that about 50% of personality is inherited genetically, and the other ~50% is developed in response to environmental factors.

 

Was it anything to do with this thread?: http://forums.infjs.com/showthread.php?t=13756

 

Nope, but the information were the same. Thanks!

yeah, VH hasn't been here for a long time He would know this best.

Then genetically....well, like Chaz said, it's possible. I wish I could say more though.

 

This is such a cop-out but it's true: anything's possible.

 

ANYTHING is possible.

 

I remember reading about one study that concluded that introversion is highly heritable, thinking/feeling and judging/perceiving moderately heritable, and intuition/sensing not heritable at all.

 

How can you ask if it's biologically possible when we don't know the basis for genetical inheritance of cognitive functions?

As it stands there's room for speculation because genetics is complex enough, and with varying factors involved such as recessive traits, it's entirely possible.

I seriously don't understand why people consistently make inquiries like these; your genotype is a result of a much wider pool of traits than just your parents. If you were really going to trace the genetical origins of your type you would need a lot more genealogical data.

 

I think that Ni becomes a mechanism for children who feel the need to anticipate other's actions to protect themselves (whether physically or emotionally). It could explain why two S parents producted N children. Your environment might have played a deeper role in creating a Ni function because it was important to anticipate your parent's reactions to given situations. I think really strong Ni happens to some kids because they learn at a young age the world is a dangerous place and Ni gives you an edge in protecting yourself.

 

I grew up in both a physically and emotionally dangerous household
and the only person who has ever mentioned anything about my Ni
was Odyne and then she doubted that.

 

Agreed. In this sense Ni is very useful reading Si (the norms) implicitly.