This is a great subject I have often thought. I'm kind of shy, and my baigaiement turns when I feel that we judge me negatively. So I asked myself why I was afraid of the judgment of others. My answer was that I put too much in my personality. And I had deduced that many (not all) of shy, are narcissistic. This was much annoyed me found that I could be narcissistic. Since I try to give less importance to me, but I still sensitive to criticism. I understand that I am always narcissist. As the article says, it may be due to a neurosis. What I could translate into a narcissism that we would have inherited a genetic karma (unlike psychosis, which I think is due to the individual karma of our past lives). So, perhaps to give me "good conscience", I would assume that the "narcissistic introvert" inherits a narcissist who is not from his soul, but the common narcissism of human genetics, linked to different stories. As for "extraverted narcissism" it would be a psychosis related to our soul. But probably we are mostly confronted with different levels, the two forms of narcissism (neurosis and psychosis). If I had 13/50. The test was fun for our ego, but I do not know if we can give credibility to this test.