I always struggle with what's more important justice or mercy.
Yeah and I think it's a stupid question. It depends on the case really. I might be able to feel sympathy for a rapist that was sexually molested throughout his/her childhood by his/her parents, but I still think he/she should go to jail.
I am recommending you to use a Big Five test instead. It has far more support in the scientific community than MBTI and it is standard to use in studies like yours. Basically what you get with MBTI is a weaker version of Big Five, especially in statistical studies. If you want your research to have any value at all, use Big Five, or it will be ignored. The best test to use would be NEO PI-R: Revised NEO Personality Inventory - Wikipedia, the free encyclopedia There is also a shortened version named NEO-FFI.
"Neither a lofty degree of intelligence nor imagination nor both together go to the making of genius. Love, love, love, that is the soul of genius." - Wolfgang Amadé Mozart
Psychometric tests are not more valid or more reliable than other psychometric tests - rather a test is valid or invalid and reliable or unreliable in itself.
However to administer a valid and reliable psychometric test to oneself, means the data are contaminated from the very beginning.
And if you want your personality or intelligence quotient or any other aspect of your psyche measured, you need to pay a qualified, professional psychometrician.
In fact you need to pay not one but two independent psychometricians to make sure the result is the same in each case.
However if a Movement encourages you to administer to yourself a test that is invalid and unreliable for free, you know that Movement is a cult.
For instance cults like Scientology offer free bogus personality tests to appeal to the narcissistic.
And cults have their own internal dynamic. They appeal to the felt needs of their members, such as belonging. Cults are impervious to evidence. Oddly enough cults often attract the best and brightest. And cults regard curiosity and dissent as, at first, bad manners then secondly as disloyal and finally as treacherous.
At the deepest level, cults are paranoid. And paranoia, you remember, is psychological preparation to attack.