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How specifically do you treat people differently based on their personality test score? Can you give some examples? And how can you be sure that this practice is actually effective rather than just being confirmation bias?

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I wouldn't trust a MBTI personality score because the test is too susceptible to social desirability bias. But on the other hand, assuming that you "are" an INTJ and knowing that your manager "is" an ESFJ, you should be careful to consider social harmony [1] on top of efficiency that you naturally value [2] when taking a decision at work.

Now, indeed nobody is a pure ESFJ nor a pure INTJ. People tend to get hung up a little bit too much on the letters.

[1] https://en.wikipedia.org/wiki/Jungian_cognitive_functions#Ex... [2] https://en.wikipedia.org/wiki/Jungian_cognitive_functions#Ex...

It's a very subjective thing like all other social things. If someone has an "I" in their type it makes sense that the person maybe doesn't feel rewarded when you go to a loud nightclub for a celebration. Again, there are no hard rules but they are a useful hint like many other things.

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