I reviewed my results from a personality test today which I took quite a while ago (sometime last year). If you want to read the whole thing, it's here.
This part is so accurate it's funny:
As an ISFJ, your primary mode of living is focused internally, where you takes things in via your five senses in a literal, concrete fashion. Your secondary mode is external, where you deal with things according to how you feel about them, or how they fit into your personal value system.
So is this:
ISFJs have a rich inner world that is not usually obvious to observers. They constantly take in information about people and situations that is personally important to them, and store it away. This tremendous store of information is usually startlingly accurate, because the ISFJ has an exceptional memory about things that are important to their value systems. It would not be uncommon for the ISFJ to remember a particular facial expression or conversation in precise detail years after the event occurred, if the situation made an impression on the ISFJ.
This is funny too, in a good way:
The ISFJ has an extremely well-developed sense of space, function, and aesthetic appeal. For that reason, they're likely to have beautifully furnished, functional homes. They make extremely good interior decorators. This special ability, combined with their sensitivity to other's feelings and desires, makes them very likely to be great gift-givers - finding the right gift which will be truly appreciated by the recipient.
This is accurate and not funny:
ISFJs need positive feedback from others. In the absence of positive feedback, or in the face of criticism, the ISFJ gets discouraged, and may even become depressed. When down on themselves or under great stress, the ISFJ begins to imagine all of the things that might go critically wrong in their life. They have strong feelings of inadequacy, and become convinced that "everything is all wrong", or "I can't do anything right".
I was originally going to say maybe I should re-take the test, but I'm thinking not a lot has changed with me.