The interesting thing to me is that people say that the MBTI is junk pseudoscience, that the Big-5 (OCEAN) model is the only scientifically valid personality test...but then take a look at the correlation coefficients between the MBTI and 4 out of the 5 dimensions of the OCEAN model:

http://en.wikipedia.org/wiki/Myers%E2%80%93Briggs_Type_Indic...

A correlation of 0.7+ is huge in the social sciences - it's significantly more than the correlation between say intelligence and genetics. If I look at the numbers, my interpretation is that the MBTI is largely measuring 4 out of the 5 dimensions of the OCEAN model, but leaves Neuroticism out of the model.