I've found a neat quiz that purports to help determine your 'world view'.

What is Your World View?

What I especially like about this quiz is that you could agree with the premise along a spectrum, so that ticking a box in the middle translates into a sort of "I don't know, I don't care" answer, which is probably why I typed as a having a 'postmodern' world view.

"You scored as Postmodernist. Postmodernism is the belief in complete open interpretation. You see the universe as a collection of information with varying ways of putting it together. There is no absolute truth for you; even the most hardened facts are open to interpretation. Meaning relies on context and even the language you use to describe things should be subject to analysis."

Interestingly, the Blood Type Diet has been described in several articles as "The first postmodern diet."

If I remember correctly, in the Meyers Briggs world I'm something like a 'rational architect' or whatever, but I think this little quiz does a better job of putting you on the horns of a dilemma than does the MBI, which seems to just really attempt to describe you as something you probably already knew you were.

Coincidentally enough, I'm reading a little book called On Certainty by Ludwig Wittgenstein, which has a lot of interesting, aphorism-type stuff in it (in addition to some daunting philosophy and math). Right off the bat, a quote (p. 49) caught my eye and probably explains why my view of the world was such a dead-heat between existentialist and postmodernist:

"Knowledge is in the end based on acknowledgement."

Try it. You'll like it.