What a great post! I've been a different Myers-Briggs type in the few times that I've taken them, and outside of its usage in business, I've heard things like if you and your partner only differ by one type, that could mean that you will have relationship problems. In addition, if both of you are (some astrological type) then depending on the type you may also have problems. This is such B.S. and there is no scientific study that proves it.

But, lets examine this a bit further. These tests do ask questions that identify behavioral traits, and it is true that some behaviors could more likely be less compatible, and that there are studies to support this. So, to some extent these tests are onto something.

And what about psychological tests? If each test was perfect, you would not need to take several tests that each vary a lot in the results. Both a family member and I have taken a number of psychological tests, over time and result were really inconsistent.

It isn't just in business that they use these types of tests, whether they are Myers-Briggs or widely accepted and used psych tests. These tests are used for college students in dorms to assess whether they are compatible. They are used to access psychological problems. This is very important stuff, and it is guesswork! The human mind and accessment of our behavior is beyond our current ability to measure and diagnose properly.