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The Myers-Briggs Personality Test

55m 19s

The Myers-Briggs Personality Test

The Myers-Briggs Type Indicator (MBTI) is one of the world’s most popular personality tests, widely used in workplaces, dating, and self-reflection. Developed from Carl Jung’s theories by Katherine and Isabel Briggs, it was designed to help people understand themselves and find suitable careers. However, scientific research consistently undermines its validity—only the introversion-extroversion dimension aligns with other personality assessments, while the rest of the framework lacks reliability and predictive power. Studies show that between 39% and 70% of people get different results on retakes, and the test’s binary categories oversimplify human behavior. Critics argue it fosters harmful biases, especially in hiring, where it can lead to discrimination against people with disabilities or neurodivergence, and results in decisions based on subjective assumptions rather than actual performance. The test also suffers from the "fourth effect," where people identify with vague, widely applicable descriptions that feel deeply personal. Despite these flaws, the MBTI remains popular due to its promise of certainty in uncertain life decisions. This appeal is rooted in human desires for clarity and control, even as the test is repeatedly criticized by psychologists and legal bodies for its lack of scientific rigor and potential for misuse. Its widespread adoption in corporate and social settings highlights a deeper cultural need for simple, structured self-understanding—though it often comes at the cost of accuracy and equity.

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all i can think of is corny myers-briggs humor we we took a personality test and this podcast is a s-u-c-k-s okay terrible that's terrible one letter too many i know the first the literal first thing and i've already fucked it up uh okay welcome to mania's phase the podcast that is one of only 16 kinds of podcasts oh i like it there's a finite number of types of things definitively and the type of podcast never changes yeah your whole life we're coming for you people with mbti in their dating profile i'm aubrey gordon i'm michael hobbs if you would like to support the show you can do that at patreon.com slash you maintenance phase and michael today wait hang on i'm aubrey i like to say aubrey after you say michael i know i didn't expect it to be a pause for aubrey today we're talking about the most popular personality test in the world the myers-briggs type indicator this was a michael hobbs special request well a sort of a this was a i want aubrey to do this so i don't have to do this because it was inevitable that we would do it and i have uh pre-existing feelings which we will get to right so that's my question for you is just to kick us off how do you come to the mbti what's your what's your uh background with the myers-briggs so my mom was really into the mbti when i was growing up and was like involved with the organization in like a tangential way oh no i wish i had done all of this differently mrs mike's mom i wish i had done all of this differently basically there was a movement to like bring the myers-briggs type indicators into churches and my mom was like involved in that movement so she was like a licensed mbti giver and like she was using it for couples counseling she was using it with like various congregational things that she was doing in her church so as a child my mom talked about myers-briggs a lot and i remember taking it a couple of times oh do you know what your type is i think i'm an infp but it changed this is kind of my beef with the myers-briggs is that it changed over time and i was talking to my mom about this recently and she said everything changed except for the introvert extrovert thing that i was like the most introverted little child imaginable listen michael i've been in deep enough on this to say you are not an infp no infp of mine acts the way that you act no i don't know uh infp is one that a lot of people get okay it's sort of the like sensitive idealistic like okay too tender for this world kind of person how is that not me too tender for this world the guy who only starts fights on the internet aubrey how dare you i am such a sensitive little baby i am so nice just not to other people or like in my just not in my interactions with others well listen my background with the myers-briggs is different oh i encountered it for the first time at a non-profit leadership retreat that i went to in like my 20s okay so we took the quiz we broke out into small groups based on our type and i loved everything about it i loved yeah how it gave me this sort of sense of connectedness to other people uh that i wouldn't have expected to feel connected to i loved that it positioned each of us as problem solvers whose job it was to figure out how to navigate the world and how to navigate different personality types and work styles rather than just like grousing and writing somebody off right yeah i loved that it said that every type has something to contribute and something to offer right i actually had this conversation with my mom recently because we were talking about like sort of circling back because she's not really as into it now as she used to be and and the way that she put it was that it's a constructive way to talk about differences between people yeah it's not like you suck and i'm cool it's like oh well this is what you need from an interaction or like this is what you're bringing to it and it's not like you suck to it and i i think of it very similarly to the love languages where these specific five love languages are like kind of made up and arbitrary and not really based on anything but on the other hand it's very constructive to have a conversation with somebody of like how do you receive compliments how do you receive gifts how do you like to be loved and show love yeah and i don't know where we're going with this episode but i think people feel this kind of beclenchment when they see us talking about something that maybe they like and they're like oh no mike and aubrey are gonna say that i'm problematic for enjoying this thing and they're like oh no mike and aubrey are gonna say and like i don't think that's the project of this episode at all i really like taking personality tests and i think it's really important to have frameworks for talking about like conflict and relationships between people that don't make either person feel like shit and i think in like 99 of cases that's like what the myers-briggs type indicator is doing like on an interpersonal level i i mostly think it's like a force for good absolutely i need all the people who thought we were going to cancel pilates to help their mbti friends through it so i'll say the flip side of the myers-briggs and part of what started to sour me on it was i would start to administer it in advance of our staff retreats and then we'd have a whole staff retreat session about like how do we work better together and that kind of thing we kept that up for a few years but over time it started to kind of devolve into this weird clickishness oh and like pre-judgment about other types so like we'd be going through a hiring process with a hiring committee and somebody would be like we are not hiring another persuader oh interesting people would be like our team is out of balance or i've decided i don't like this type right right so it was sort of this shortcut to get people to connect more and then over time it started becoming another reason that people would disregard each other it like it felt like it sort of backfired over time you can't sit with us this is the infp table 100 actually also like once again you are not at the infp table dude i just looked up the infp table and i was like oh my god this is the infp table i just looked up my text from my mom and that's what she says look up infp right now wait okay she this this is what my mom wrote this my mom wrote i'm reading texts from my mom on my podcast it says introvert which of course she doesn't need to define because it's so obvious that i'm an introvert intuition which means big picture thinking rather than details feeling which means values rather than linear logic as a way to make decisions perceiving which means you meet the outer world with a stance of taking in info rather than making decisions about it listen here's the opening segment on 16personalities.com which is like a very widely used sort of myers-briggs adjacent website the first clause of the first sentence is although they may seem quiet or unassuming oh well okay all right fair fair point fair point fair point we are doing a bonus episode where aubrey and i take the mbti and diagnose each other or like classify each other whatever it's called uh so we will we will answer this question the name of the infp type is the mediator mediators are poetic kind and altruistic people always eager to help a good cause aubrey parts of that are true of you aubrey this this podcast is completely dedicated to the good cause of yelling at transphobes on social media one of the great joys of my life and one of the most essential functions in our society so if the headline here was instigator i'd be like yes the thing is instead of doing instead of doing the bonus episode where we like take the test we should have a debate between you and my mom just a long like chatham house rules or whatever like okay opening statement two minutes oh my god well thank you for that because that also gets us the like overview of the four different letters oh yeah okay thanks for doing that i didn't mean to okay the number one source for this episode is a book called the personality brokers written by merve amre this is a great read oh fabulous so just like if people want to know more about this story there are infinity times more layers to it there's a ton more texture to it you should absolutely read this book it whips i forgot that there are good books me too this is something that has escaped me in the last like two years of my life so michael should we talk a little myers-briggs 101 wait do you want me to do it because i'm such an expert because my mother due to my mother due to osmosis yes tell me give me your 101 on the myers-briggs there's four different categories and each of the category is a binary so introvert extrovert uh okay i'm done i don't know what the other three are never mind we've reached the we've reached the limits of the osmosis so just to back it up one step the myers-briggs type indicator is a personality test as a test taker you answer a self-report questionnaire then you get results that slot you into one of 16 personality types that are a combination of four letters those four letters are as you noted binaries right the current website for the myers-briggs calls them preference pairs okay those are extroversion and introversion which the website describes as opposite ways to direct and receive energy do you prefer to focus on the outer world or your own inner world that's a bad description of introvert extrovert honestly all of these are wild descriptions yeah sensing and intuition which the website says are opposite ways to take in information do you prefer to focus on the facts or the big picture thinking and feeling opposite ways to decide and come to Conclusion, do you prefer to take an objective or an empathetic approach for deciding? The last so-called preference pair is judging and perceiving. Opposite ways to approach the outside world. Do you prefer to seek closure or stay open to outside information? I think anyone who's into the Myers-Briggs would admit that, of course, all of these are on a spectrum. Yep. People can be, it can be situational. It can change over time. It's no one is like 100% one or the other. So each of these sounds like really simplistic and terrible when you like read them off. Like, do you like thinking or do you like feeling? It's like, obviously all do both. One of the consistent critiques has been, well, you've got these raw numbers of what percentages people sort of responded with, how, what percentage introverted versus what percentage extroverted. Why wouldn't you just say you're 57% extroverted, right? Versus going, no, you are an extrovert and you are that thing for the rest of your life. Yeah. Which is also. A core pillar of the Myers-Briggs is that your type is innate. You were born with it and it does not change for your whole life. Wait, they actually say this, the test people? 100%. Oh, that's dumb. That's bad. Yeah. The only, I feel like the only way to approach these things is to not take them so seriously that you think that like the map is the territory. Obviously people do not fit into really any binary. Yes. Coming off of our trans episodes. Yes. Yeah. So the Myers-Briggs is frequently discussed. It's described as being the most popular personality test in the world. According to the New Yorker, more than 2 million people take it each year. And that is presumably just through the Myers-Briggs company. Part of the appeal of the Myers-Briggs is attributed to something called the fourer effect. Okay. So the fourer effect is defined as the tendency of people to hear general sort of broadly applicable descriptions of their life or personality and to identify with those as deep and specific to them. Oh, this is like when I used to write horoscopes. 100%. Totally. Yeah. It's actually really easy to come up with stuff that sounds specific, but it's actually very general to like everyone. Yeah. Fourer also described an inverse inability to recognize those descriptions as being applicable to others that people would be like, no, no, no, it's just me. Oh, interesting. Okay. It's named for Bertram Fourer, who's a psychologist who documented the effect in 1949. He, he did an experiment. He did an experiment that is so mean and so funny. That's every, that's every psychological experiment before like 1985. Totally. This is 1949. So you can imagine. He's, he's just like, we're going to push them down the stairs and see what happens. Fourer administered a personality test to his students and then a week, so he had them fill out a questionnaire, right? And then a week later he presented them with their personality profiles. Ah, okay. He has everyone rate the accuracy of the test on a scale of zero to five. The average accuracy rating was 4.3. And he gave all of them the same one. He gave them all the same one and he had lifted it from an astrology magazine that he picked up at a newsstand. Love it. Can I tell you what the actual profile was that Fourer handed out to his students? Yeah. Give me, give me, give me. I was, I was going to ask. This is, yeah. Uh, it's a 13 point numbered list. Okay. One, you have a great need for other people to like and admire you. True. Two, you have a tendency to be critical of yourself. Only when I'm bad. Three, you have a great deal of unused capacity, which you have not turned to your advantage. I definitely think that about myself, but it's probably not true. I'm using 100% of my brain. Four, while you have some personality weaknesses, you are generally able to compensate for them. Or start a podcast highlighting them. Six, disciplined and self-confident. Controlled outside, you tend to be worrisome and insecure inside. Never heard that. From everyone I know. Eight, you prefer a certain amount of change and variety and become dissatisfied when hemmed in by restrictions and limitations. I like how all of these are like, you like change, but also constancy. Yeah. Sometimes you're extroverted, but sometimes you want to be alone. This is like those dating profiles that are like, I can laugh one minute and be serious the next. And you're like, oh, so you're a person? A human being with changeable emotions? Imagine. Nine, you pride yourself as an independent thinker and do not accept other statements without satisfactory proof. Oh, yeah. Everyone, everyone wants to think that they're like, I don't just follow the crowd. Yeah. Thirteen, security is one of your major goals in life. Oh, well, that's like a Maslow's hierarchy thing. You just want to eat food. Sex makes you nervous sometimes and you don't always feel super. I'm super confident about it. It's wild the kids didn't clock this. It's like just a totally generic description of everyone you've ever met. I like that you're like, I'm team professor. These kids are not smart. I'm actually a super independent thinker, Aubrey, who doesn't follow the crowd. So the reason that that matters is that when people identify with the descriptions they're given in a personality test, research shows that they are more likely to see the test itself as more valid. Right. Because of course they are. Right. Research also finds that people identify with those descriptions more when they are favorable because again, of course they do. INFP, smoking hot, thoughtful. Like, wow, this test is good. I rescind my previous comments. So here is the issue. The Myers-Briggs is just not very good at reliably assessing people's personalities. Okay. When we talk about personality, we're talking about a mixture of observable behaviors and like subjective judgments, right? In the case of the Myers-Briggs, what they're measuring is our own subjective view of ourselves, right? That you're filling out a self-report. The only data that's going in is coming from you and the only result is coming back to you, right? It is self-report, but that's also pretty much every personality test. Right. So if it's so subjective, how can we know it's wrong? There are a few ways. One, they haven't proven that these are statements. Static, unchanging core features of a person's personality, right? The Myers-Briggs has just sort of never really done that. There are other personality tests, all still kind of questionable, but they at least have gone through a scientific process, right? Right. The Myers-Briggs biggest competitor is called the Big Five, the five-factor model. Oh, yeah. And the reason that that one is such a staunch sort of competitor for them is that it was developed and independently validated. It was developed and independently validated by multiple teams of researchers over the course of decades. Right. Right. So that's like people winnowing down this massive list of human attributes down to what they believe are sort of the core, the five core aspects that drive the rest of it. Right. The Myers-Briggs didn't do that. The Myers-Briggs is designed to be an expression and a popularization of one of Jung's theories. Oh, no. Uh-huh. Oh, it's archetypes? Uh-huh. Oh, no. We're Jordan Peterson adjacent now. Kind of, but also Jordan Peterson does not like the Myers-Briggs. Surprise. Oh, really? Yeah, he came up in some of my little YouTube searches and he was like, people just like it because it makes them feel good. And I was like, uh-huh. Stop. Stop clock. Stop clock. Totally. We end here. So there have been some meta-analyses of different personality tests, including the Myers-Briggs, and they've essentially found that only the introversion-extraversion scale findings track with any other personality test. Or other research into personality, right? The rest of the letters don't tend to scan with other instruments that folks have developed, which isn't like a, you know, death knell to it or whatever, but it's not great. Right. A bigger issue is test-retest reliability. So if something is measuring something stable in our innate core personalities, if you took the test multiple times, you would get the same result, right? Right. Depending on the study that you look at, between 39% and 70%. 46% of people get different results the second time they take the Myers-Briggs, and that's just after five weeks. This is like me taking it when I was a kid. Yeah. Totally. Like, maybe, kid, you did test as an INFP. Maybe I was beautiful once. Maybe I was decent. Okay. Before the podcast. Part of the appeal also of the Myers-Briggs is that it doesn't give you feedback about sort of culturally undesirable traits, right? Traits that are coded as being undesirable. The big five, for example. The big five, for example, measures neuroticism. Yeah, we're absolutely not taking that test on the show. Oh, no? There's no fucking way. Oh, we're not? We're only taking the one that's designed not to hurt your feelings? I just want the one that tells me that I'm. Poetic and gentle. Strong and handsome and important. And that I care about animals and nature and I recycle and all the good stuff. So Scientific American ran a test of personality tests, and when they removed neuroticism, as a measure from the big five, it's predictive accuracy of sort of life outcomes fell by about 22%. You're like, wait, this just says POS. I thought there were four categories. Sorry. What? So the last thing I would say about the sort of validity thing is because the Myers-Briggs is not a clinical tool, the research on it is thin. The Myers-Briggs was initially developed sort of for self-knowledge, right? Right. idea was to get people to know themselves better so that they could slot into the right jobs and sort of show up in the right way in the world it was not designed for clinicians it wasn't even really validated by clinicians for a really really long time the research that has happened at this point is mostly older and it's mostly in like hr and management journals not yeah in like psych journals or in research journals or whatever right so given all of that given all the concerns about its validity given sort of the again the jury's sort of out on personality tests writ large right where did the myers-briggs come from and how did it get not only so popular but like ubiquitous i like that we're getting the science stuff out of the way so you can do what you really want to do and just like tell the story just shut up during the science report i'm going somewhere you've been very transparent about the fact that you're just like we're not going to talk about the science all that much so if we want to talk about where the myers-briggs comes from we're going to start in the late 1800s with a woman named katherine cook briggs she was homeschooled by her father at 13 she enrolled at michigan state after college katherine married lyman briggs who was a physicist who went on to become a high-ranking bureaucrat in dc later in his career lyman briggs went on to lead roosevelt's uranium committee okay so katherine is surrounded by all high-achieving sciencey men she is a high-achieving sciencey lady in a society where there are limited places for high-achieving sciencey ladies right yeah no kidding in 1897 she gave birth to her daughter isabel as a child isabel is very very important to katherine not just in the way that any child is very important to a loving parent but because katherine lost two other children in infancy so isabel is her one surviving child she was sort of precious cargo around this time there was sort of this talk from first wave feminists in particular who were calling for a scientific approach to what they called the vocation of motherhood and katherine set about doing just that she commandeered their home's living room okay she started calling it the cosmic laboratory of baby training we don't name things the way that we used to we need to bring it back return return she kept notes on isabel observing her behavior and personality development she was particularly keen to find like what role she thought isabel was meant to play in the world right what vocation would best suit her strengths and her weaknesses her likes and her dislikes all of that kind of stuff and after a while she decided to open up the cosmic laboratory of baby training to other kids okay she starts sort of systematizing her like very plussed up child care operation basically right she starts administering questionnaires to parents about their kids behaviors and temperaments she starts keeping files of notes on each of the kids all of this sort of in service of finding out who those kids are meant to be sort of on a deep level so that they can find their calling that really is sort of her drive a bunch of this she also starts writing about her work in the cosmic laboratory of baby training she writes a couple of pieces about personality and child rearing for the new republic she also wrote 33 pieces for the ladies home journal focusing on sort of child rearing as a science so she becomes a little freelance writer through all of that work she starts researching personality it's around 1917 when she starts looking into personality at this particular time freud and young are both alive and publishing 1917 i should say is also the year that historians say modern personality testing really began in the u.s it began because of something called woodworth's personal data sheet which was developed as an assessment to give to soldiers during world war one to figure out who might be the most susceptible to shell shock later called ptsd who's a queer who's a commie so katherine starts coming up with her own rudimentary set of personality types just four to begin with based on her observations of like her husband her daughter and these other kids she's basically running a daycare and she's like writing down like the different types of kids yep totally which frankly at this point is more research than what's going into a lot of psychology yeah it's more than freud did it isn't until 1923 that an english translation of carl jung's psychological types is published and katherine briggs reads it she has a very strong reaction to this book she loves it so much she recognizes that young's thinking has gone way deeper than her own she starts thinking about how to popularize his work and that becomes the seed of the myers-briggs right it'll take a long time to develop from here even though she really loved young's work the myers-briggs isn't necessarily a faithful interpretation of it some of the changes between sort of young's theory and the myers-briggs were just sort of lost in translation right from academic language to more popular language but some of it was also just katherine playing jazz she added a preference pair judging and perceiving was not part of young's original framework okay and they really shifted young's idea about introversion and extroversion oh i find this really fascinating has stayed with me in a big way because i think of introversion and extroversion as you mentioned earlier as being like the most obvious the easiest to kind of wrap your head around like here's what this means or whatever young defined introverts and extroverts very very differently this is a little summary of the differences from the personality brokers by merveille amre what defined young's introvert was not quietude solitude or indecision as many summaries of the myers-briggs type would later claim but her interest in the self or what young writing in more technical language called the subjective factor what made an introvert an introvert was her belief in the superiority of her singular orientation of the world her subjectivity over and above the expectations and desires of those around her to the extrovert the introvert came across as either a conceited egoist or a crack-brained bigot for the extrovert's behavior was governed by pure objective conditions to illustrate the contrast between the two young offered a simple example on a blustery winter day the fact that it was cold outside would prompt the extrovert to don his overcoat while the introvert the person who wants to get hardened finds this superfluous whereas the extrovert resigned herself to the simple fact of the cold the introvert sought to overcome it by toughening the very fiber of her being oh this is like introverts suck and extroverts are cool i it's sort of like introversion as like rugged individualism yeah almost it's so different that i'm just like i don't know how they got from point a to point b on this one but also this is just not useful because nobody would self-report that they are this kind of person totally and young wasn't designing this to be a self-report questionnaire oh my god oh my god oh my god he's judging and catherine is perceiving okay they are real the binaries i feel like the binaries are real i feel like i'm getting a window into the rest of this episode and i am creating a monster you're you're reinforcing my belief in myers-briggs i've come back around to it so catherine goes head first down a carl jung k-hole she just reads all of the fucking carl jung she can get she starts writing letters to him oh and sometimes he writes back to her some lady the letters that i've read most definitely seem like a public figure who's being nice to a fan when he writes back to her he's like hey man good for you that sounds great keep it up and she takes that as he is endorsing my work and he understands its importance at one point she started fully like doing therapy with a child she writes an initial letter where she's like it's such a good smart family and this kid is clearly troubled but just needs some help and i'm here to help okay he writes her back and is like hey what are you doing oh really you have absolutely overreached why would you think this was a good idea please stop please stop please stop no way she writes back to him and is like they told me they didn't want my therapy anyway and they probably would because they're all dumb and bad like all of her descriptions of the family went from being this like glowing lovely descriptions of the family to being like screw those guys anyway you can't fire me i quit a bunch of fucking introverts over here fucking introverts to say like a slur she met young uh a couple of times she like traveled to meet him and she went so far as to write song parodies about how great he is oh my god there were a bunch of like they were like she took the tune of blah blah blah but they're all these songs from like 19 oh yeah yeah idea there was one that was to the tune of yale's bula bula fight song which is just saying bula bula bula over and over again that's not even a song so these are the lyrics Michael, I'm so pleased to report we have lyrics from her Young songs. From her Young Yoki. And I'm going to make you read them. How did you not give me a trigger warning about this? I'm doing this in the tune of Rihanna's Umbrella. Dr. Young came down from his alpine height and completely re-educated Yale, while the wise, the dumb, and the erudite waxed paler and yet more paler. For they had heard great wisdom's word, which shook them to their boots, when the wise, the dumb, and the erudite behold their psychic roots. And then it just says, bula, bula, bula, bula, bula. That's pretty, I mean, that's honestly pretty good. Katherine Briggs walked so Weird Al could run. I think we all know this. Her next three are all about pizza. Are you ready for the next one? Oh yeah, there's more. There's more? Michael, if you thought I was stopping at one song. Before we started, you were like, this is going to take roughly three hours. And I think this is the next two. Okay, so this one was to the tune of some show tune. Like something about the vagabond, I forget. Signs and symbols reading, Young gives proof exceeding. He knows all humanity, understands old Adam, not to mention madam. Wise old owl, so wise is he. Upward, upward, consciousness will come. Upward, upward, from primal scum. Individuation is our destination. Hock, hile, hail to Dr. Young. This is garbage. This is like Michelle in fucking Michelle Remembers. The pentameter doesn't work. It's not, you got wrong syllables. I didn't think it was going to get me that hard after having read it so many times in the course of playing this episode. It's because I did it with the right tune, Aubrey. So while Katherine Cook Briggs is sort of off making a name for herself as a writer on the success of Raising Isabel in particular, Isabel is off living her life. Okay. She graduated top of her class at Swarthmore in 1918. Fancy. Isabel married Clarence Myers, who went on to become an attorney. They had two children. While raising her two young kids, she followed her husband to Memphis first for the Air Force and then to Philadelphia where he went to law school. So she's like following him around the country for his work. And she's sort of constantly adjusting. But she's adjusting for his life, right? And try as she might, she just wasn't really into the role of living for her husband. There's some writing where she kind of tries to convince herself that she's like, this is good. But she was like, clearly not into it. She kept a list of her future goals in a notebook that she called Diary of an Introvert, Determined to Extrovert, Write and Have a Lot of Children. That's the Michael Hobbs story, other than the children part. You and Isabel. Two peas in a pod. Two INF peas in a pod. This is a comparison you will live to regret. Oh, damn it. Give me 15 minutes. Okay. So after several years of just trying to kind of stick it out in this domestic life, in the late 1930s, Isabel was getting restless. She read an article about trying to match workers to the right job. This is sort of at the. At the outset, at the outbreak of war in Europe, right? We're talking late 30s. We're talking Hitler on the move. We're talking rise of fascism. There's this article about matching workers to the right job. And she's like, aha, this is going to be really important if folks end up in war. It's going to be really important if like in a post-war landscape, we're going to need some kind of tool to sort people into the right jobs. So she wrote to her mother. Catherine, who was then in her 60s, Isabel started picking up on her mother's work, developing this personality type schema, still based in Jungian psychology, but like the way a Lifetime movie is based on real events. She developed the Briggs Myers type indicator, a test booklet that she would sell to sort of whoever would buy it. She and Catherine debuted the type indicator in 1943. It was originally called the Briggs Myers type indicator. Yeah. They switched it around because someone at some point did mention to Isabel, this is going to get turned into an acronym and you don't want to be the BM type indicator. Fair. That's actually very good advice. So Isabel starts really sort of digging in on the type indicator. Catherine does too. But Isabel's really sort of clear. She's clearly in the lead here. And because she has envisioned this as a tool for workplaces, she needs an in with businesses. So she starts working with this family friend who was a management consultant, a thing that I did not know existed. Yeah. In the like 30s and 40s, right? But it wasn't called McKinsey. It was called McGillicuddy. She has this family friend who's a management consultant. His name is Edward Hay. By 1947, Hay started pitching the test to his clients. And he has some pretty big deal clients. He's working with General Electric. He's working with Bell Telephone. He's working with the National Bureau of Statistics. So they let Edward Hay and Isabel Briggs Myers come in and start testing this on some university students, some workers at these different businesses. Sort of it's a little all over the place. It is definitely not a randomized controlled trial test. It's just like, how does this work? How does this thing actually work out in the world, right? So this is based on Catherine's experience in the daycare. What is Isabel drawing on? Isabel's drawing on her own personal observations as well. Just her life. Just this is people I know. Again, sort of like a LaCroix approach to Carl Jung. What does that mean? Well, just like in the same way that like if you're drinking like a like a pompo mousse LaCroix, you're not eating a grapefruit. Oh, right. Yeah, yeah, yeah, yeah. It's like the Jolly Rancher flavor version of that. Right. Like a watered down facsimile. Yeah. Yeah. I should say that according to the New Yorker, by 1952, one third of American companies were using personality tests in the workplace. So the Myers Briggs was jockeying to be part of a very large, growing and profitable field. Right. By 1957, Isabel starts a conversation with the educational testing service. She wants that. She wants them to distribute the test. They have a big library of educational tests, cognitive tests, psychometric tests, all that kind of stuff. She wants them to add it to their library of tests and distribute it for her. Basically, they tested it internally to see if they wanted it. But ultimately, they decided not to add it to their very large library of tests. And they stopped working with Isabel pretty much entirely. OK, that might work. B, because of the test not measuring up. It's again, it certainly doesn't measure up. Yeah. But it also might have been because of Isabel's presence in the office. OK. She would just show up at ETS at the office all the time. She'd show up after the office was closed or before it was open and sort of rifle through people's stuff. She'd like interrupt their work day and chit chat with them. But the biggest complaint seems to be that she. She left finger like messy, sticky fingerprints. What? Everywhere. Like a kid. What? And that's because she had a favorite energy drink that she likes to drink at the time. Another thing I didn't think existed. Then she called it Tiger's milk. It was a mix of milk, nutritional yeast and Hershey bars. What? So she apparently. Mixed it with her fingers and left her little chocolate milk, nutritional yeast fingerprints everywhere. OK, you're right. I'm not an INFP because I'm judging whatever the judging one is. I'm judging this. I'm an IJJJ. Also, just a reminder. Catherine Cook Briggs made her name on raising this woman. Yes. Fingerprints everywhere. Just like fucking up people's days. I feel like if you want to be an expert on parenting, you have to. Prove that you didn't raise a caveman. Someone who just sticks their hand in the liquid and just like stirs it around like you're mixing pottery glaze. So she had a nickname in the ETS office. She had one nickname when she was sort of on the younger end. And then as she got older, that nickname changed. The young nickname was that horrible woman. Oh, my God. THW. That's another type. I took the test and I got a THW. The older nickname was that horrible old woman. She's like, can you guys please call me something else? And they're like, OK. This is straightforwardly a horrible way to talk about someone that you know and work with. Unless they have sticky little fingers all over the desk. But also as a story from like decades ago. It's extremely. - Extremely funny. - Were there others? annoying in other ways. They can't just be the fingers. So Isabel wasn't just like kind of quirky or annoying. She had some deeply terrible ideas. At one point, she wanted to create separate test result packets for men and for women. Right. So if you and I both tested as an INFP, you would get the dude INFP packet and I would get the lady INFP packet. Mike, a powerful mediator. Aubrey, a weak surrenderer. So like, that one's not great. Here's one that's worse. She reportedly refused to administer the test to people with an IQ of under 100 because she believed that they lacked the capacity to develop a personality. So it's like 16 types and then not applicable. Yeah. There's like a whole passage with like Catherine writing about how much she hates flappers. I love the irony of creating this entire framework that's like all personality types are equally worthy and valuable. And then being like, unless they wear their hair short, unless they're out doing boop, boop, be doop on Fridays. At one point, she wrote a letter to her business partner expressing serious anger and frustration at a trainee who she ran a Myers-Briggs workshop. One of the attendees suggested that all races and genders should be equal. And she wrote this like wild ass angry letter to Edward Hay. What the fuck? Being like, get out of town. What's this person talking about? I like the episodes of the show where we just judge people from previous times. I was thinking about this while I was putting this episode together that you and I in the grifties last year talked about Brian Johnson, the anti-aging millionaire guy. And you were like, we didn't really talk about this on the main feed because a lot of the coverage is just like, get a load of this guy. Yeah. And this episode is fully get a load of these. Get a load of these ladies. We're doing very sophisticated work here today. In the late 1960s, Isabel recruits a psychology professor from the University of Florida named Mary McCauley. To join the team to help essentially professionalize the Myers-Briggs. Right. But it's like worth noting that didn't change really their research. This is not someone who then came in and like reverse engineered the whole thing and was like, all right, we're scrapping it. We're starting from scratch. We're starting with data. Here we go. This was someone whose job it was to like package it up differently. Right. It's more marketing than anything else. It's like the doctor approved personality test. Totally. In 1975, Isabel was a professor at the University of Florida. She was a professor at the University of Florida. And she was a professor at the University of Florida. Isabel finds her distributor that she's been looking for all this time. Consulting psychologists press CPP started distributing the Myers-Briggs in 1975. Isabel doesn't love that they're trying to sort of gloss it up, but they do. They package it for sale and it absolutely took off. Yeah. CPP's revenue went through the roof. Some reports say that their revenue shot up a thousand percent in four years. What explains why it took off so much? CPP was well positioned to distribute it. And it had this sort of foothold with employers after years and years and years. Right. And that gave them this built in customer base. And the Myers-Briggs was one of the only tests that was like, we're not here to hurt your feelings. Right. So you could administer it to employees without risking the level of like blowback of a test that did measure something like neuroticism or right job performance or dedication or any other sort of like. You know, things that might ruffle some feathers. Right. There's also, I guess, this trend of like scientific management practices. Yep. And one of the problems with frameworks like the Myers-Briggs is that they seem quantitative. They seem like you're doing real science, even though they're very qualitative exercises. I also think just like on an individual level, the Myers-Briggs can be really comforting and it gives us a mirror to see our own behavior, which I think is something that like a lot of us are like hungry for. And I think it's a really good thing. I think it's a really good thing. Feedback that feels grounded and real and actionable and compassionate. Right. I would actually like less feedback on my personality, but I also know that most Americans cannot check iTunes reviews for a star rating of what kind of person they are. And I think on a corporate level, it does a similar sort of thing. Labor is the largest cost for most businesses and bosses want a sense that they're making sort of a surefire investment in a person. Right. They want like a Carfax of people. Yeah. Which is ridiculous. Can I illustrate to you, Michael, how well it went for CPP? Okay. CPP has since rebranded and they are now known as just the Myers-Briggs company. Oh, right. Okay. That makes sense. Since CPP slash the Myers-Briggs company took over distribution. Of course, Catherine and Isabel have both since passed. Catherine died in 1968. She was 93. Isabel died at 82 in 1980. They both saw the test grow in popularity and in use, which I'm sure was like very rewarding for both of them. But they both missed its continued rise as this like sort of widespread language of personality that people picked up in this like colloquial kind of way. It really seems like this would have been a dream scenario for them. Right. Like the initial goal for Catherine certainly was for people to like know themselves, have a real sense of themselves and then give of themselves from that knowledge. Right. That really is sort of what I think a lot of Myers-Briggs content now does think that it's doing. Oh, totally. Yeah. That is what it's aimed at. Yeah. Since then, the Myers-Briggs has had waves of popularity in the 90s and 2000s. It gets a big boost when tests are computerized and people can take them more easily and just get immediate scoring back. Right. There is a big wave of a big uptick in popularity in both South Korea and China in employment, but also in dating, especially since the onset of COVID-19 that people are like, don't waste my time. I've even heard of some low effort podcasts doing them as Patreon bonus episodes. It's really taken over. Very worrying. It comes and goes in terms of media interest, but by all accounts, it is really, really profitable. Yeah, it must be. Yeah. Today, taking the test on the Myers-Briggs website, costs $60, $59.95. What? We're going to have to pay money when we do it? We're not going to take the official one. We're going to take one of the many free ripoffs. Okay, good. Okay. Okay. As a result of all of that powerful distribution, all of that popularity and all of that profitability, the Myers-Briggs is as popular now as it has ever been, especially in the workplace. Major, major corporations across the US and around the world use personality tests. Government agencies use personality tests. Government agencies use personality tests and the Myers-Briggs in particular. The US military uses the Myers-Briggs. The National Institutes of Health uses the Myers-Briggs. The US Geological Survey. Shouldn't they be doing like, what type of rock are you? BuzzFeed quiz? Perhaps both the darkest and the funniest is that the Myers-Briggs has also been used by law enforcement. Okay. I just sent you a book cover. Oh. No. This is not real. Oh my God. Okay. So it's a book called Thinking Cop, Feeling Cop. An interesting look at how the deviations from true North, uncommon Jungian personality types function in the law enforcement profession. Jesus Christ. I mean, I would rather have both more than one. Thinking cops and feeling cops. You can only do one, Mike. It's a forced binary. The thing is, I think that's where, to the extent that there's harm of Myers-Briggs, this is where the harm comes in. It's like employers using it to separate, you know, the people that they're going to hire or not hire or promote or not promote. The Myers-Briggs company has a whole thing that they say about how like, we actually don't allow clients to use it in that way anymore. And one time we found out that a client was using it for hiring and firing and we severed it. We severed ties with that client. But I also feel sort of like the best case scenario is that just becomes another sort of hoop to jump through to get a job is like, you got to figure out how to game these personality tests. Yeah, there's like a whole nonprofit in New York that is like working to train lower income people and unemployed people on like how to take these tests. It then just becomes a huge waste of everybody's fucking time because you're not measuring personality. You're just measuring. Did this person have the money or the time to get? Test prep. SAT style. It's just how good are you at faking this thing, which I guess it's also what job interviews are. Yeah, I mean, yes, the whole the whole process is a facade. And I think, yeah, so we're zooming out here from Myers-Briggs to personality tests in the workplace writ large, just to be clear, a number of that sort of broader set of workplace personality tests will issue a red light for some results, barring the applicant from being hired in that company, and sometimes also in affiliated companies owned by the company. This is something that's been documented quite a bit in reporting around these personality tests. The person is not notified that they have been red lighted. They just get rejected for that job and rejected for any other jobs in that company. And you can be red lighted for answering honestly about your own preferences, right? For example, if there is a question on a personality test, it's like, hey, in conflict, do you prefer to speak up or hang back? Right? - Right. - That's a question about a preference. They are ostensibly interpreting that through the lens of your job. Right. Right. But like you can go, yeah, yeah, yeah. My preference is to stay quiet, but I understand that at my job I might need to step up. Right. Like, but my, you're asking about my preference. My preference is stay quiet. Right. That's a kind of answer that could get you a red light. Never tell the truth at work. Even if it's an annoying hoop to jump through. Fine. As you note, that's so much of the hiring process is annoying hoops to jump through. These kinds of tests can and likely do penalize people with disabilities. I'm sure. Yeah. Because the tests ask about behavior and inclinations and preferences, they don't explicitly ask about mental illness or developmental disabilities or autism or whatever. Right. But they screen on the basis of behaviors that may be a direct result of those conditions. It's basically asking people, are you disabled? But you can't ask, are you disabled? But a lot of these questions are essentially synonyms. For are you disabled? They hew so closely to that question that the EEOC has actually cracked down on large corporations for violating both the civil rights act and the Americans with disabilities act. Yeah. Part of the reason that they're able to do this, I read like a law blog that was ostensibly sort of addressed to their clients being like, Hey, please, please, please stop using these personality tests. They expose you to so much legal risk. And one of the first things that they listed was that they were like, it definitionally puts everybody at a disadvantage. And so I'm like, well, I'm not going to do that. I'm not going to every question in writing. Oh yeah. Yeah. And every answer, right? Like you have a record now. Right. Plus questions from some personality tests, including the Myers-Briggs can overlap with like diagnostic criteria for disabilities and mental illnesses. Right. So it ends up being this sort of backdoor into asking about disability and making personnel decisions based on disability, both of which are illegal because of those EEOC charges. Several companies, uh, have been required to stop using personality tests. CVS has had to stop target paid, uh, $2.8 million settlement, which sounds like a lot, but it's not very much for target. Right. And, uh, best buy have all stopped using tests in the 2010s. Those were all in the 2010s. Some have stopped using them without an investigation just because they didn't work very well. Xerox stopped using them. Whole food stopped using them because they were like, we're getting all this information on personality, but we're not getting very good results. And so they're like, well, we're not getting very good information on like food prep. Yeah. It just seems like the question should be like, have you done this work before? I don't know what it offers to be like, are you a thinker or a perceiver? So while all of this is happening, the Myers-Briggs framework and personality tests as a whole continue to get mostly bad press from journalists, from professional associations, from psychologists, from science organizations, like since the eighties, researchers and clinicians have been extremely skeptical. By and large about the utility of the Myers-Briggs to the point that board members of the Myers-Briggs corporation who are psychologists have been asked, Hey, do you use the Myers-Briggs in your research at your university? And one of them was like, no, all of my colleagues would make fun of me. Oh, that's great. In 1991, a national academy of sciences review committee went over research related to the Myers-Briggs. Their review committee was like, Oh, I don't know. I don't know. I don't know. And their review included the choice phrase, quote, the popularity of this instrument in the absence of proven scientific worth is troublesome. I think there's this bottomless desire for kind of scientific ways of classifying people, something that's real. Like there's an objective metric for what kind of employee you're going to be or what kind of boyfriend or whatever. And I just don't think that there is, I think that every person has to be assessed qualitatively. I just don't think that the kinds of decisions that are being made are going to be the ones that are going to make the decisions that we make that are important in our lives are ever going to be that easy. I mean, I think ultimately all of this amounts to there's all this bad press, right? And it doesn't really seem to make a difference in the popularity of the Myers-Briggs. And I think that's just the appeal of reaching for certainty in an uncertain world. Yeah. That's like somebody can tell you for sure that you're making the right hire. Somebody can tell you for sure that the person you're engaged to is the right partner for you. Right. Somebody can tell you for sure that you're not going to screw up a major life decision or that things aren't going to go badly this time. Right. Right. It's very human and it's very flawed. There's also, there's so many institutions like this in America where everyone kind of knows that they suck. And we, all we talk about is how much they suck and then nothing ever fucking changes. It's like the Oscars. Man, I bet Isabel would have loved Green Book. She's a crash gal. She's really in the crash. I bet. I bet. I bet. I bet. I bet. I bet. I bet. I bet. I bet. I bet.

Podcast Summary

Key Points:

  1. The Myers-Briggs Type Indicator (MBTI) is one of the most popular personality tests globally, often used in workplaces and dating, despite limited scientific validation.
  2. Developed from Carl Jung’s psychological theories by Katherine and Isabel Briggs, the test was initially aimed at helping individuals understand themselves and find suitable careers.
  3. The MBTI faces strong criticism for lacking reliability—people often get different results upon retaking the test—and for its binary, oversimplified categories that don’t reflect the complexity of human personality.
  4. Research shows that only the introversion-extroversion dimension correlates with other personality assessments, while the other dimensions (sensing/intuition, thinking/feeling, judging/perceiving) lack consistency and predictive validity.
  5. The test has been used in hiring and workforce decisions, leading to legal and ethical concerns, including discrimination against people with disabilities or neurodivergent traits.
  6. The MBTI’s popularity is driven by the "fourth effect"—people identify with general, vague descriptions that feel personal, even though they apply to everyone.
  7. Critics argue it promotes harmful stereotypes, such as type-based exclusion in hiring, and reduces nuanced human behavior to rigid categories.
  8. Despite scientific skepticism and legal challenges, the MBTI remains widespread due to its perceived comfort, simplicity, and promise of certainty in uncertain life decisions.

Summary:

The Myers-Briggs Type Indicator (MBTI) is one of the world’s most popular personality tests, widely used in workplaces, dating, and self-reflection. Developed from Carl Jung’s theories by Katherine and Isabel Briggs, it was designed to help people understand themselves and find suitable careers. However, scientific research consistently undermines its validity—only the introversion-extroversion dimension aligns with other personality assessments, while the rest of the framework lacks reliability and predictive power.

Studies show that between 39% and 70% of people get different results on retakes, and the test’s binary categories oversimplify human behavior. Critics argue it fosters harmful biases, especially in hiring, where it can lead to discrimination against people with disabilities or neurodivergence, and results in decisions based on subjective assumptions rather than actual performance. The test also suffers from the "fourth effect," where people identify with vague, widely applicable descriptions that feel deeply personal.

Despite these flaws, the MBTI remains popular due to its promise of certainty in uncertain life decisions. This appeal is rooted in human desires for clarity and control, even as the test is repeatedly criticized by psychologists and legal bodies for its lack of scientific rigor and potential for misuse. Its widespread adoption in corporate and social settings highlights a deeper cultural need for simple, structured self-understanding—though it often comes at the cost of accuracy and equity.

FAQs

The MBTI is a personality test that categorizes individuals into one of 16 types based on four binary preferences: introversion vs. extroversion, sensing vs. intuition, thinking vs. feeling, and judging vs. perceiving. Each preference is based on self-reported answers to a questionnaire.

The MBTI lacks strong scientific validation and reliability. Research shows low test-retest consistency, and its findings don’t align well with other established personality models like the Big Five. It is not considered a clinically valid tool for personality assessment.

The MBTI is popular because it offers a simple, comforting way to understand oneself and others. The 'four-letter' framework feels personal and provides a sense of belonging, especially in workplace and dating contexts where people seek clarity.

Major criticisms include its binary nature, lack of reliability over time, failure to predict real-world behavior, and the fact that it doesn't measure core personality traits like neuroticism. It also often mislabels people as 'problematic' for not fitting a type.

Developed in the 1920s by Katharine Cook Briggs and her daughter Isabel Briggs Myers, the MBTI was inspired by Carl Jung’s theories of personality. It was created to help people understand their strengths and roles in life, especially in work settings.

No, using MBTI in hiring is problematic and often illegal. It can lead to discrimination, especially against people with disabilities or neurodivergent traits, and has been challenged by the EEOC as a form of unlawful bias.

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