Every personality type has something incredibly valuable to offer the world. Each comes with a slightly different way of learning new information, seeing the world, making decisions, and interacting with others. And that means that we each have the potential to positively impact the world in different ways.
For this list, I’ve paired the types that use the same primary and co-pilot functions together. For example, both ESFJ and ISFJ use Extroverted Feeling and Introverted Sensing as their preferred functions, just in a different order. If you’re new to Myers-Briggs® theory or want a quick refresher, you can click here for a quick intro to how functions work.
ESFJ and ISFJ
ESFJs and ISFJs change the world by connecting with and supporting other people, as well as preserving and passing on valuable lessons of the past.
Having Extroverted Feeling as either their primary or co-pilot function gives SFJ types a strong desire to help and support other people. They tend to personalize everything they do and care so deeply about others that they may forget their own needs while selflessly serving those around them. They’re also really good at picking up on what other people are feeling.
With Introverted Sensing as either their primary or co-pilot function, SFJs have a strong desire to learn from the past. It’s the function that helps us make sure we remember what was learned in our personal and collective histories so we don’t keep repeating failures as we go forward.
ENFJ and INFJ
ENFJs and INFJs change the world by bridging gaps between people who have different perspectives and offering a vision for what the future could look like on both personal and societal levels.Read more →
Have you ever witnessed, or been part of, a conversation that starts to turn into a conflict because both parties feel the other just doesn’t “get it”? They’re approaching whatever topic they’re discussing from different perspectives, seeking different outcomes, and/or phrasing things in a way that makes sense to them but for some reason sets the other on edge.
If you talk with one of them after this conversation, you might hear things like, “I just can’t understand why they’re so irrational!” or “Why can’t they just tell me what they actually think?” Then if you talk with the other person you could hear, “I don’t see why they insist on stirring-up conflict” or “How dare they put me on the spot like that!”
This sort of situation often develops when Thinking and Feeling personality types clash. It’s especially noticeable among the INFJ, ISFJ, ENFJ, and ESFJ types and INTJ, ISTJ, ENTJ, and ESTJ types, since these types direct their decision-making processes outward. In other words, they interact with the outer world using their judging functions of Extroverted Feeling and Extroverted Thinking. If you’re not familiar with function theory, click here to read “The Simplest Guide to Myers-Briggs® Functions Ever.”
One of my favorite applications for personality type theory is using it to better understand people who don’t see the world the same way as us. As I explained in a post a couple weeks ago, both Thinking and Feeling are considered rational functions. These two ways of decision-making use very different foundations for their rationalizations, however. And if you’re not aware of how that all works, then it can lead to quite a bit of frustration when you’re trying to have a conversation with someone who doesn’t share your type’s preferences. Read more →
In the Myers-Briggs® typology system, a preference for Feeling (F) or Thinking (T) shows up as the third letter in your personality type. But what does it actually mean to use Thinking over Feeling, or vice versa?
You’ve probably heard that Thinking types tend to be more rational and cerebral than Feeling types, who are typically more emotional. There’s a lot more to it than that, though, and the stereotype isn’t entirely accurate. Keep reading to learn 5 things you might not have known about the Thinking and Feeling processes.
They’re Both Judging Functions
Thinking and Feeling are both what we call “Judging” functions. They’re used to describe the psychological process you use most often when making decisions. If you have an F in your four-letter type code, then you use Feeling to make decisions. If you have a T in your type, then you use Thinking.
If you’re a Judging (J) type, then that means you use your judging function to interact with the outer world. A TJ type uses Extroverted Thinking and an FJ type uses Extroverted Feeling as their most comfortable way of making decisions. If you’re a Perceiving (P) type you still have a judging function, but it’s oriented to your inner world. A TP type uses Introverted Thinking and an FP type uses Introverted Feeling.
I saw Black Panther yesterday. So naturally today’s post is a new installment in the superhero Myers-Briggs types series. I know I get pretty excited about most of the MCU films, but this one is seriously good. I love the hero characters and the principles they stand for like loyalty and peace. The acting is great, the plot’s tight, I love the music (I’m listening to the score as I type), and while it still has a superhero-movie feel it doesn’t shy away from digging into some really deep and difficult subjects.
Basically, you should go see the movie. And if spoilers bother you, see it before reading any further in this post. We are going to talk about key plot points and character moments. You’ve been warned.
Okay, let’s start typing. T’Challa’s judging functions are pretty easy to pin-point: Fi/Te. But the fact that he uses Introverted Feeling and Extroverted Thinking when making decisions only tells us he’s either a TJ or FP type. We’re going to need a little more to go on than that.
After Captain America: Civil War came out, most people typed T’Challa as an ISFP. A couple of the discussions I found online also pointed out that he’s an ENTJ in the comics (which I haven’t read, so this typing is only going to focus on his film portrayal). I ended up going with ISFP. And here’s why: Read more →
Because INFJs and INTJs both use Introverted Intuition as their favorite mental process, the two types can appear very similar. Quite a few people who take a Myers-Briggs test and get either of these results (or both on different tests) are left wondering, how can I tell whether I’m an INFJ and INTJ?
My personality type is INFJ and my sister’s is INTJ. It would be well-nigh impossible to assume we share a personality type, but if you don’t have that contrast living with you (or if you’re a little less extreme on your T/F preference) I can see how deciding which type is your best fit could be a challenge. INFJs and INTJs lead with the same mental process and they react in very similar ways when stressed out. The main differences between the two types have to do with how they handle their Thinking/Feeling preference.
INFJs use auxiliary Extroverted Feeling as their copilot and support it with tertiary Introverted Thinking. INTJs use auxiliary Extroverted Thinking as their copilot and support it with tertiary Introverted Feeling. The auxiliary process is how they prefer to make decisions and interact with the outer world, but they can slip into their tertiary quite easily. It’s not as well developed or as reliable, but it can seem comfortable since it’s introverted (just like their dominant intuitive function).
How comfortable each INFJ/INTJ is with their thinking and feeling processes depends on a number of factors, including age, environment, and past experiences. You can find INFJs who are very people-oriented and social, or INFJs that seem distant and logical. Similarly, you’ll meet INTJs who are stereotypically blunt and calculating, and INTJs who are comfortable experiencing their own emotions. Even so, the way these functions shows up looks different for each type.
My Cup of T
An INTJ’s Thinking side is focused on the outer world. It’s also the function they’re most comfortable using when making decisions. While mature, well-balanced INTJs will take the human side of a question into consideration, it’s typically secondary to finding the most logical, fact-based solution. Personality Hacker calls this mental process “Effectiveness” and says it “focuses on impersonal criteria for making decisions” and prioritizes efficient problem solving.
INFJs, on the other hand, use an inward-focused Thinking process and they’re not usually as comfortable with it as they are with their Feeling side. Personality Hacker calls Introverted Thinking “Accuracy” and says this function gives users “the ability to reason through a subject or concept within one own’s understanding, even if it doesn’t match ‘outer world’ data.” Basically, this process is trying to work through things until they make sense.
INTJs are much more likely to express their Thinking judgements externally than an INFJ. They’ll often seem more blunt and direct because efficient communication is more important to them than worrying another person’s feelings. INTJs are also more likely to draw on objective, external facts to support their ideas. They want their ideas to work and they want outer world validation for their problem solving. That’s not nearly as important to INFJs, who need things to make sense personally more than to the people around them.
Feeling The Feels
An INFJ’s Feeling side, like INTJ Thinking, is the function they use most comfortably when making decisions. It’s also outward focused, but it’s primarily people-oriented. Personality Hacker nicknames this function “Harmony” because it “makes decisions based on how things are impacting people on an emotional level.” The key thing to remember about this function is that it’s outward focused. INFJs are more in touch with other people’s feelings than they are their own.
INTJs use a Feeling process that’s introverted, which Personality Hacker calls “Authenticity.” While it’s also concerned with how decisions impact on an emotional level, it’s focused on one’s own emotions rather than other people’s. To again quote Personality Hacker, “Introverted Feeling is about checking in with all those inner parts and voices to determine what feels the most in alignment with oneself.” Somewhat ironically, the stereotypically cold and logical INTJs are often much more in-tune with their own feelings than the stereotypically emotional INFJs.
INFJs are more comfortable expressing feelings in the outer world and also more likely to pick-up on what other people are feeling. They’ll typically seem much more empathic and expressive than an INTJ. An INFJ who’s comfortable with their Extroverted Feeling side will also appear more social and “extroverted” than a typical INTJ. But INTJs are far more in-tune with their own emotions than most people (and many type descriptions) will give them credit for.
INxJs In Real Life
Even after you know about the technical differences between the ways INFJs and INTJs use thinking and feeling, you might still wonder they show up in real life. Let me give you some quick examples.
When making an everyday decision — an INFJ’s first impulse will be finding what makes as many people as possible happy, while an INTJ’s first impulse will be quickly finding the most logical answer. For me and my sister at least, the INTJ has a much easier time making simple decisions without overthinking them than the INFJ does.
In a stressful/emergency situation — I’m the one who’s in logic mode and my INTJ sister is the one indecisive and unsure. We’re talking something that calls for quick action and is stressful enough to push you out of your most comfortable mental processes (such as deciding to take someone to the hospital), Might not hold true for every INFJ or INTJ, but it’s an interesting observation I’ve made.
If asked to change their minds — an INTJ is most likely going to stick with what they’ve already decided because they know their idea is based on logic and that it feels right to them. To change their mind, you’ll need to present a fact-based counterargument that matches their deeply held beliefs about what’s right. A confronted INFJ will second-guess themselves because now they know someone isn’t happy with what they chose but they’ll also be reluctant to abandon something that makes sense to them. To change their mind, you’ll need to present an argument that hits emotion as well as logic.
I hope this helps you with telling the difference between these two types If you can’t tell if you’re an INFJ or and INTJ, looking at the differences in Thinking and Feeling functions is a good place to start figuring out your type. You’re not going to be a perfect 100% fit for every description of any one personality type, but there should be one that’s a “best fit” for your personality.
Your Turn: What are some differences and similarities you’ve noticed between INFJ and INTJ types?
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Ah, the infamous inferior function — the way Myers-Briggs theory explains why you don’t always act like “yourself.” If we’re using Personality Hacker’s car model* to illustrate Myers-Briggs types, the inferior function is like a 3-year-old sitting behind the driver. It’s the least-developed function in a person’s stack, but it plays a significant role, especially when we’re stressed. Since we don’t use this mental process effectively, we often try to ignore it or bury it deep and dismiss times when it shows up as being “out of character.”
That side of our personality is not, however, easy to ignore. Continuing with the car analogy, if you’ve ever driven with a 3-year-old you know they’re only quiet when they fall asleep for a little while. Even when they’re happy and chatting they can be distracting. When they’re upset, it’s almost impossible to focus on anything else.
When the 3-year-old mental process in the backseat of your mind is throwing a temper tantrum, it’s hard to see the inferior function as anything useful. Often, I feel more like I’m “dealing with” my inferior Extroverted Sensing than learning from it or profiting by it. But as annoying at it can seem at times, it’s still one of the four mental processes that you have most access too. Even if it’s only 3-years-old, it’s still better developed then one of the four mental processes that’s completely outside your function stack. Instead of treating it as the enemy, maybe it’s time to embrace it as an immature, but lovable, friend.
Meeting Your 3-year-old
First, introductions. You’ve been ignoring this side of yourself most of your life, so if you’re going to make friends with it you have to first learn more about how your mind works. If you don’t know your personality type yet, I recommend Personality Hackers’ test as the most reliable I’ve found online. If you already know your type, you can learn more about your inferior function here:
You can also look up your inferior function by Googling “Extroverted Thinking” or “Introverted Sensing” or whichever function is lowest on your type’s function stack. Most articles you find that way will be talking about a healthy, mature form of that function as seen in types that use it as their primary or secondary mental process. Remember when reading these articles that it will show up differently for your type, since it’s not well developed.
For example, ENTPs and ENFPs use Extroverted Intuition as their primary, or driver, process. It’s an innovative, idea-generating mental function that’s constantly looking for new possibilities and patterns. They’re not only comfortable with exploring new ideas — they crave and thrive on it. When this function is sitting in the inferior position, it’s still exploring possibilities, but in a less-mature way. For ISFJs and ISTJs, their Extroverted Intuition shows up in generating worst-case-scenarios when stressed, and a near-constant worry about “what if?”
You might be frustrated that your inferior function can’t work as effectively in your mind as it does for people who use that mental process more readily. I’m an INFJ, which means Extroverted Sensing is my inferior function. People who use Extroverted Sensing effectively have “real-time kinetic” skills and respond quickly to things happening in the outer world. I’m so oblivious to the outer world that I run into doors on an almost daily basis. Even keeping track of my own hands and feet can be hard — once I wondered why my ankle hurt, and looked down to discover blood dripping from a cut I couldn’t remember happening.
Things like that can be really frustrating. But if we’re trying to befriend and cultivate our less-developed mental process, it’s better to start out accepting it how it is than hating how our minds naturally work. In fact, many of us could already be using our inferior function and not realizing it. An ENFJ who works with computers is using their inferior Thinking side at work. An ISTP with who cultivates close friendships in their local church is tapping into their inferior Feeling side.
You might start out exploring your inferior function through hobbies. When you’re reading about your inferior function, take note of what sort of skills and hobbies are usually enjoyed by types who use that function effectively . In my case, I’ve always enjoyed gardening and cooking, which are two endeavors that use Sensing skills. I’ve also started consciously cultivating awareness of the world around me through my yoga practice.
Growing and Learning
I’ve found that just knowing about your inferior function is a personal growth step. You finally have an explanation for why you react to stress the way you do, and why sometimes you have a “Was That Really Me?“* moment (which is the title of an excellent book by Naomi Quenk on inferior functions). Once you start understanding why your mind works the way it does, you can start learning how to use your natural stills more effectively.
Naomi Quenk’s book includes a section on how each of the types changes as they learn to use their inferior function. I also touch on this at the end of each post in my “Learning From Your Stress Function” series. Here are those links again:
Type theorists often call becoming comfortable with your 3-year-old mental process ‘incorporating your inferior function.” This should make you a more well-rounded, balanced individual who’s comfortable in their own skin and it better able to exercise forgiveness/acceptance toward self (and others) in areas where we’re naturally not as strong. As an added bonus, you’ll also start to strengthen that under-used part of your mind, making it less likely to trip-you up (at least in theory).
Your turn: What sort of hobbies do you enjoy, or skills do you have, that are not typical of your personality type? do you consciously use your inferior function?