Thanks, Vudu, your comment seems to come from an expert, since our personality type graphs are almost identical.
One problem for me to read this kind of things is that they are in a foreign language. Dictionaries aren't that good and there's too many years since I read psychology to remember the nuances of certain terms like introverted.
For making the test I believe that exact understanding of each question isn't too important, because the same thing gets asked multiple times with varying wording. For the same reason lying in this kind of tests is difficult. It'd be hard to remember how to answer to a certain category, especially if there's a time limit. In the Army they made one for us, the only reasonably easily fakeable questions were "do you like flowers", "if you were a florist, would you like your job" etc. but even that category might have had some traps less easy to notice in a hurry.
