I find that some of the predictions about what a particular type might do can be far off the mark for a particular individual. For example, the prediction that an INFJ is more likely to disclose something personal than an INFP. It's difficult to verify an assertion like this. As an INFP (I think) who actually discloses painful stories from the past, but keeps current troubles inside in order to keep relationships with others smooth, I feel more skeptical of how far one can go with the mbti theory after reading this kind of prediction.