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Strange, But True?

Matt Y offers his "bizarre social science result of the day":

For instance, assaults increase by about 9% when a community hosts a college football game, vandalism increases by about 18%, and DUIs increase by about 13%. We also find evidence that upsets result in larger increases in crime than games that do not produce an upset. For instance, an upset loss at home is associated with a 112% increase in assaults and a 61% increase in vandalism. We discuss these results in the context of psychological theories of fan aggression.

Matt describes this as "strange, but true." Why? More people get drunk and disorderly when their favorite team gets upset at a game they just attended? And not just any team, mind you, but their favorite college football team? The only thing about this result that I find surprising is that the magnitude of the increase wasn't higher!