I googled and just got a few articles rather than studies, might have another dig later tonight.It's been posted on BigFooty before, can't dig it up via Google. From memory it was ~ 10 years or so ago, conducted on / with AFL head coaches, might have been with Victoria University.
Someone like Lore would have read it if I was to take a guess?
Better that it was conducted with the coaches than the players, but you've still got 17/18ths of them not winning the premiership. Ask those who know the Jock McHale medallist in any given year and I bet they say they're a prick.