I think we could use a little more information. Many people here, me included, like to argue with others just to have a healthy debate in order to work through our our opinion on a matter. We like to play the devil's advocate. Is that behavior exempt from the study's conclusion or does being a hacker go hand-in-hand with neurosis and narcissism?

I will say that forcing myself to see the best in people and often times the worst in myself, makes it easier to form relationships and to be happy in general.