"'Football Freakonomics': How Advantageous Is Home-Field Advantage? And Why?"

Research seems to show the answer to the first question is it depends on the sport, but there is a home-field advantage in all of them. The answer to the second may well be this: "Apparently, when the crowd sits closer to the field, the officials are more susceptible to getting caught up in the home-crowd emotion."

Link courtesy of my older daughter.