When choosing a roommate one needs to know what they are getting into. Do you want to know beforehand that you are living with a crazy person, or find out later when there is a horse head in your bed? Thanks to the pioneers of psychology, the researchers who sought out a way to identify what one’s personality was like, there are countless tests that can be used to measure and identify personality type. From self-report tests to biological measures, there is always a way to assess personality. Each type of test comes with their own advantages and disadvantages, but the important thing to do is identify which test is right for the situation at hand. If I had a human roommate whose personality I wanted to assess I would choose two different methods