The Holland test said IAS, and listed a couple dozen career suggestions that, with the exception of psychologist, are diametrically opposed to anything I'd want to do with my life. I enjoy the humanities, not things like (gags for a second) meteorology, dentistry, or geography. Part of the problem is that their questions for Artistic, in particular, are too specific to certain subcategories of that career interest. Someone who is very into art may not enjoy doing every single kind of art there is.
The thinking styles test said I was a Pragmatist, Realist, Synthesist-Idealist, Analyst, which doesn't seem very true to me at all. I would, for one thing, bump Idealist up a notch or two.