The Myers-Briggs Type Indicator (MBTI) and its spin-offs are among the most popular
personality inventories in the world.
...
A hard look at the common criticisms of the MBTI indicates that none of these criticisms hold up. I sometimes wonder if academics are not a little
jealous of the commercial success of the MBTI and therefore look for ways to shoot it down.
This does not mean that the MBTI is beyond criticism.
...
in the end, the MBTI is sufficiently reliable and valid enough to be useful in a number of real-world contexts.