"It also has the reverse effect"
Of course it is. The article's conclusion is naive at best and stupid at worst since the real conclusion is "being near the boss facilitates being at boss' reach" which, of course, is a platitude.
You, as a hire are in one of two situations: you either are happy with your position or you are not.
If the former you don't want to be too near to the boss to avoid the chance of being a pawn on his intrigues (if you are OK chances if you move is to the worse), but not so far away that he forgets why is he paying you.
If the later, you are either trying to climb the ladder, in which case you definitely want to be near your boss you maximize your chances of promotion (at a higher chance of screwing up, either really or in his perception) or you are trying to get out of the company, in which case you, yes, want to be as far from your boss as possible to maximize the chances he forgets about you.
Now, you don't need a study to probe the obvious but, if any, to disprove this "common sense" approach.