There is so much to poke fun at in this article. So they got the data, then tried to design their classification algorithm. Which might be innocent, but waves a pretty red flag that says there might be nothing here, but I'll find something anyway, if I look hard enough. But coming from a different direction, some game theorists set up some game-like scenarios, with rotating partners/competitors, and then when 30% judge their own ability in comparison to participants around them, the researchers announce envious is now a personality type.After carrying out this kind of social experiment, the researchers developed a computer algorithm which set out to classify people according to their behavior. The computer algorith organized 90% of people into four groups: the largest group, accounting for 30%, being the Envious -- those who don't actually mind what they achieve, as long as they're better than everyone else.