Zebras aren't color blind

One of the reasons why I like sports is that in many ways it serves as a simple model of society. There are clear knowns, and fixed variables; instead of billions of actors there are a few hundred or a few thousand; and via things like box scores and game stories, a high percentage of what happens in this microcasm is documented.

Plus, because of the racial makeup of the major American sports leagues, there are much greater opportunities for racial interaction than tends to hold true in the 'real' world.

I've written a few times about the subconscious bias almost all of us hold when it comes to race; little surprise then that NBA referees are no different.

Study of N.B.A. Sees Racial Bias in Calling Fouls, Alan Schwartz in the Times: An academic study of the National Basketball Association, whose playoffs continue tonight, suggests that a racial bias found in other parts of American society has existed on the basketball court as well.

A forthcoming paper by a University of Pennsylvania professor and a Cornell University graduate student says that, during the 13 seasons from 1991 through 2004, white referees called fouls at a greater rate against black players than against white players.

Justin Wolfers, an assistant professor of business and public policy at the Wharton School, and Joseph Price, a Cornell graduate student in economics, found a corresponding bias in which black officials called fouls more frequently against white players, though that tendency was not as strong. They went on to claim that the different rates at which fouls are called “is large enough that the probability of a team winning is noticeably affected by the racial composition of the refereeing crew assigned to the game.” ...

The three experts who examined the Wolfers-Price paper and the N.B.A.’s materials were Ian Ayres of Yale Law School, the author of “Pervasive Prejudice?” and an expert in testing for how subtle racial bias, also known as implicit association, appears in interactions ranging from the setting of bail amounts to the tipping of taxi drivers; David Berri of California State University-Bakersfield, the author of “The Wages of Wins,” which analyzes sports issues using statistics; and Larry Katz of Harvard University, the senior editor of the Quarterly Journal of Economics.

“I would be more surprised if it didn’t exist,” Mr. Ayres said of an implicit association bias in the N.B.A. “There’s a growing consensus that a large proportion of racialized decisions is not driven by any conscious race discrimination, but that it is often just driven by unconscious, or subconscious, attitudes. When you force people to make snap decisions, they often can’t keep themselves from subconsciously treating blacks different than whites, men different from women.”

Mr. Berri added: “It’s not about basketball — it’s about what happens in the world. This is just the nature of decision-making, and when you have an evaluation team that’s so different from those being evaluated. Given that your league is mostly African-American, maybe you should have more African-American referees — for the same reason that you don’t want mostly white police forces in primarily black neighborhoods.”

To investigate whether such bias has existed in sports, Mr. Wolfers and Mr. Price examined data from publicly available box scores. They accounted for factors like the players’ positions, playing time and all-star status; each group’s time on the court (black players played 83 percent of minutes, while 68 percent of officials were white); calls at home games and on the road; and other relevant data.

But they said they continued to find the same phenomenon: that players who were similar in all ways except skin color drew foul calls at a rate difference of up to 4 ½ percent depending on the racial composition of an N.B.A. game’s three-person referee crew. ...

Mr. Wolfers and Mr. Price claim that these changes are enough to affect game outcomes. Their results suggested that for each additional black starter a team had, relative to its opponent, a team’s chance of winning would decline from a theoretical 50 percent to 49 percent and so on, a concept mirrored by the game evidence: the team with the greater share of playing time by black players during those 13 years won 48.6 percent of games — a difference of about two victories in an 82-game season.

“Basically, it suggests that if you spray-painted one of your starters white, you’d win a few more games,” Mr. Wolfers said.

I'm curious to see what kind of discussion this paper stirs up; as I've said before, it's okay to have a society where almost everyone is racist to some degree, as long as people are aware of their tendencies and take some sort of preventive action.

The problem comes when people stick their heads in the sand and ridicule things like this study, countering with platitudes like can't we all just get along (yes, but not if it's always the same people who benefit).

The kicker to all this, of course, being this:

Mr. Wolfers and Mr. Price are scheduled to present their paper at the annual meetings of the Society of Labor Economists on Friday and the American Law and Economics Association on Sunday. They will then submit it to the National Bureau of Economic Research and for formal peer review before consideration by an economic journal.

Both men cautioned that the racial discrimination they claim to have found should be interpreted in the context of bias found in other parts of American society.

“There’s bias on the basketball court,” Mr. Wolfers said, “but less than when you’re trying to hail a cab at midnight.”