To sort of explain the "junior high personality test" that EmperorCharlamagne referred to it as, the Myers-Briggs typology test is actually a very accurate test that shows how one perceives the world. Despite the fact that uninformed people would simply refer to it as a simple personality test, it is much more than that. What it intends to do is show how you see the world around you, how you interact with the world, and determine certain aspects of life that you find to be important or not.
It isn't just a random facebook test where some teenie bopper created a bunch of questions and then threw in some randomly generated title results as rewards. Nearly a century of studies in the psychology community has gone into tweaking and improving the process, questions, and results. It is not only popular with professors who are working with new freshman trying to figure out who they are in a new and confusing environment, but many fortune 500 companies use this test as a barometer when hiring new employees for management and executive positions. And if that means nothing to you, then let me explain it by saying those positions are typically the positions that people are paid six figures or more annually. It's not slouch jobs that these companies use this test for.
Many of you who go to college will probably take this test at least once, if not several times. It is often used by professors who are teaching the "welcome to college" class that is typically labeled as a "University College" course worth about 1-3 credits that basically teaches students how to be successful with their college career. It is used by these professors to help show students their tendencies as individuals, likely career choices that would fit their personality, and areas a student might need to work on in terms of social interaction to help give them a better shot at reaching their career goals.
It is for different reasons companies use this as a form of the hiring process. It helps to determine those who are applying for a job are more naturally inclined to fit the atmosphere, philosophy, and direction that the company wishes to pursue. For example if you are the CEO of an up and coming company who wants to be aggressive in the market place and challenge well established competitors immediately, it would be wise to make sure you hire a management team that is driven by outward team success. If a company hires someone who is introverted and individually driven it is more likely that the company would falter. Because they will naturally value their individual results and rewards more so than the company's.
Is it a guarantee? No. Is it 100% accurate? No.
But, I would recommend that everyone take it at least one. And spend at least 5 minutes thinking about each question. Because if you take it quickly you will almost always come up with different results. A professor that had me take it in a freshman college course, public speaking 101, told us to spend 5 minutes on each question. And during that five minutes come up with 5 examples from our lives that fit the question. Then answer the question accordingly.
We took the tests the first day of the class and he kept our results, never telling us what they were. Then the second to last day of the class he had us retake them again. Every single student in my class was in the same temperament each time they took the test. Some ended up with different personalities, but the fact that everyone scored in the same temperament each time they took it was very telling of the amount of time and energy and thought that has been put into the test, and how accurate it was. For the most part it is very accurate and should be taken seriously. Cause you might have to actually take this test if you are applying for certain jobs with specific companies.
I just thought I would share this since people weren't actually understanding what this test is actually about. It's not just a personality test that tells you if you like large crowds, or are a momma's boy, or should really start listening to more hip hop. It intends to, and often correctly does, give insights to the individual's psychological makeup. Which is important to not just know, but to understand.
As SBB said, he knows himself fine. But just because you know who you are doesn't always mean you recognize your weaknesses socially or where you need to improve when dealing with certain aspects of life. Especially when regarding one's desired career. This test can help those that don't actually sit down and think about it to realize what type of person they are, and most likely what type of person other people see them as. Not everyone is as sure of themselves as others, such as you SBB, might be.
And please note I used the phrase "sure of themselves" and not the phrase "full of themselves." They mean two totally different things and I don't want people misunderstanding my intentions with that comment.
In case you didn't feel like reading the long explanation, I'll make a short version here to end this post. The Briggs-Myers type indicator is important in a lot of ways. You should take it seriously and use it to grow as a person. Because it does give insights about the individual that one might not realize on their own.