<p>You can add another INTP to the list...I'm not sure whether these test are particularly true-to-life. It's tempting to say that I'm so unusual because my personality 'type' is found in only 2-3% of people, but if that's the case, then I've never met another INTP. </p>
<p>And as far as I understand it, shyness involves a fear of social contact, while intoversion is just the lack of need or desire for it.</p>