My understanding of this test was that it was originally designed for employers to see if the potentially of the candidates, after meeting all the other criteria, how they could be a fit in their organization.
Theory. To me it’s a waffle ice cream cone or a snow flake. Find two that are identical up front, but from a distance they both disappear on a hot day and have the potential for Bigger consequences.
Don’t answer the questions like you think it’s what the test giver wants to see or what you want to be.
Try not to read the descriptions of the personality types before you test because it will skew your test results towards who you think you are.
Lastly it’s theory, so have an open mind and see if it offers insight. Circumstances will change in your life and also can change your test results, but not to the extreme. Have fun.. You could find out you’re a Waffling Flake or a Flakey Waffle. How fun is that??
http://www.quora.com has a MBTI section to answer any questions you may have on a variety of things.