My sisters are identical twins believe it or not. Their behavior (and appearance) is slightly different overall but I think they must be the same psychological type. In any situation their reasoning is always the same, they both show interest in maintaining a healthy lifestyle, behave differently depending on the person(s) they are talking to, sometimes even score the same percentage on tests; and they are actually similar to me, more than I would like to admit. It's strange, because they view me as selfish and I also think they're selfish. I think they are typically more "unhealthy" in comparison to myself which is interesting in a way, because they're twins and I have had to go through situations independently. They lack a sense of identity because of their reliance towards each other, or anyone for that matter. It is very complicated, which makes it hard to make conclusions on type. In simple MBTI they would probably test as ISFP (and me Infj)

My brothers (yes I have brothers too) are not the same type, not as myself a least. I don't usually understand their reasoning, behaviors, mannerisms, etc. It's embarrassing talking about my family because I have seven siblings :/ For statistical purposes: In MBTI they would be, from oldest to youngest; INTJ, INTP, ISTJ, ESFJ, and INxP. Even in families, people are individuals and therefore types should be different. I think their would be more connections using more complex typology theories such as Jung or Socionics, where there might be something in common with quadra group behaviors for example.

 

Me: INFJ
Mother: INFJ
Father ISFP
Brother: ISFP
Sister: INFJ

 

Dad - INFJ
Mom - ISTP
Brother - INTJ
Me - INTJ
Sister - ENFP
Sister - ENFP

My sisters are identical twins.

 

Me - INFJ
Mum - ESFP
Dad - ISTP
Younger Brother - ISTP
Older Brother - ESFP

Life ain't easy in a family of SPs.

 

Me, my two brothers and my dad are all ISTJs. I try to find loopholes that could make one of them another type, but nope, there aren't any. So I definitely believe there is a strong relationship with MBTI and environmental factors/upbringing.

 

I dont think they would be that similar in most cases unless they were twins. Older and younger siblings often are treated very differently. Even if that is not mom and dads intent. Also they are often treated very different based on gender. Some families favor boys and some familys favor women. Which you are born to is the luck of the draw. If you are born into a family which hates your GENDER than you are probobly going to be treated like Cinderella. If they like your gender you get preference like the evil sisters and often "Can do no wrong".

I think a lot of times parents also project certain qualities on their kids depending on their past. An Example Both my parents are younger siblings and hate their older sibling. This resulted in my mother having a hatred for me since she projects her older Sister onto me and favors my younger brother. Most parents usually favor one or the other child for some reason or the other. She also has problems with her older brother and views all her older siblings as assholes, so I will always be an asshole to her.

 

Well, I have four siblings...

Sister #1: ExxJ (going with ENxJ)
SIster #2: INFP
Sister #3: xSFP
Me: INFP
Brother: ENxP, tested ENFP.

 

Well as far as I know, I'm the only NT in my family. My brother is INFP and my younger sister is ENFP. That's as close as it gets.

 

I'm quite sure my half-sibling is sibling is ESFJ. We were raised together by the same mum but the first six years of my life were in a very different environment to the first six of theirs.

 

My older brother is INTJ, as am I, although I think because of my INFJ mother I developed my Fi sooner than he; my younger sisters are INFP, ISTP and ENFP respectively.

My poor youngest sister is the only E. Her and I have had a lot of issues getting along, since she's very emotional and I am not, but we're both very outspoken. But as long as we constantly work on it and are open with each other, it works very well.

I don't think there's much coorelation letter for letter with family/siblings, but I'll bet functionwise there are different rates of development or areas of focus.

 

Mom: ENFP (tests ENFP, acts like a somewhat strange INFJ)
Dad: ENTJ
Me: INTP
Sister: ESTP

My poor, poor sister, having to be subjected to that.

 

Not too common, although more so than two people picked at random. My brother's ISTJ vs. me being ENTP.

 

I think it might be uncommon.

Mom: ESFJ
Dad: ISTP
Sister: ISFP
Me: ENTP

 

My sisters are ESFJ and ISTP, respectively, and I'm ENTP.

I get along with both of them, but they don't get along with each other.

 

My mom's an INTP, my brother is an ENTP, and my sister is an ENFP while I am an INTJ. We all get along pretty well, save for the fact that my brother's really manipulative and often ticks my mom off for that. But that's not what you asked, so I won't go more into that.

In terms of how often siblings are the same MBTI type, I think it sort of just depends on how each individual kid is raised as well as what they grow to be fond of on their own.

I've seen a thing where some claimed they don't believe children's types are determined by their parents', but I have to disagree strongly. More often than not do I see users on here with Intuitive parents that have mostly (if not all) Intuitive children, and vice-versa with Sensors. It's true I tell you, TRUE.

 

My biological brother is also an ENFP. But I don't know that he's an Enneagram 4, as I am. He seems a bit like a 7, or maybe a 2 (as our stepdad is, who's also an ENFP lol).

My adopted siblings are ESTP and ISFJ (at least, that's how I've typed them, and I *think* I'm right).

Aaand I have three step-siblings, but I'm not sure of their types. I don't think any of them are ENFPs, though. Which is probably a good thing 'cause we've already got 3 in the family hahaha. xD

 

My brother is an ESTP, my Sister Probably an INFJ and I am an ENFP. But we still Get alone Very well

 

I am an INFP 4w5. My sister is an ISFP 5w6.

 

Doesn't happen so often.
In fact, I'm an ENTP and my twin sister is an ISFJ.
I think I'm the only T in my immediate family.

 

Me: INTJ
Brother: INFJ
Mother: ENFJ
Sister: ENFP

Well....

 

I'm not fluent enough to determine the rest of my family but they are definitely not like me, an ISFP.

 

Mom: psycho
Dad: ISTP
Brother #1: INTP
Me: INTP
Brother #2: ENTP
Brother #3: idk man he's 12 (something with Fe towards the top, probably)

 

Seems like rarely, from my experience.
Though, one thing I noticed-I'm a ni-dom and everyone in my family has a strong ni, which makes it easier for me in some aspects. ^^

 

Me: INFP
Mom: ENFP/INFP
Dad: INTJ/ISTJ
Sister: ESFP/ISFP


I wrote multiple types for my family members for different reasons for all of them. My sister used to be clearly an ISFP but she's been on this anti-depressant medication that has been boosting her mood and extraversion for a while now, and we're starting to think that's who she really is.

My mom always tests as an INFP but her career requires a LOT of interpersonal interaction and she absolutely thrives on it. In her free time she likes to be peacefully alone or with her family but she craves high-stress interpersonal careers in social justice and politics where she handles everyone's drama and deals with tons of strangers. I, as a strong introvert, could never ever ever live like that. I think she's an ENFP because they ARE sometimes called "the most introverted extraverts". She and I are very, very similar, but we are also different. I'm a lot more introspective than her, and she's a lot more powerful than me.

My dad always typed as an ISTJ and the description fits him really, really well-- but honestly if anyone's an iNtuitive Thinker it's my dad. He recently tested as an INTJ and I honestly think that makes a lot more sense, even though he fits in well with the "Duty Fulfillers".

 

I type my sister as an (unhealthy) ISFP. We used to be night and day, but as she grew up she became a carbon copy of me. I'm suspicious whether or not she's even an Fi for that reason, because growing up she would often copy me to get me to like her which just turned me off of course and put more distance between us. I'm not overexaggerating too. Everything that's happened to her in her teen years is exactly how it happened for me, even down to the exact age they happened. When she was hospitalized for mental illness, when she came out, when she dropped out of school due to school refusal. It's spooky. If only she'd listen to my advice, since I've almost literally been in her shoes.

The biggest difference is that she has absolutely no self-esteem, but that's probably a depression and youngest child issue. I have type 2 bipolar disorder myself but I'm a really happy (I don't consider it an antonym of depressed) and self-confident person, really secure in who I am, even when I was an adolescent. She's super anxious, self-doubting, self-critical, thinks she's a burden on everyone for just breathing. I'm sure that's just due to depression but it's interesting how totally broken she is while I've always been quite well-adapted to dealing with it.



I'm an INFP, with an INTJ dad, ENFP mom, and (very depressed) ISFP younger sister sister. Whoah.

 

Me: INTJ
Dad: INTP (Aggravating at times because of personal issues not MBTI related)
Mom: ESFP (Can't stand her most of the time)
Brother: INTP (We never interact, always busy doing our own thing)
Sister: ISFJ (We're usually friendly but we get on each other's nerves sometimes)
Sister: ENFP (I get along with her the best, she is silly and fun and always wants to be around me for some reason)