if only the cathedral could stop bellyaching, get off its ass, and find something useful to do...,

physorg | "This study tests the model that the mind cares about physical features only to the extent that they suggest social relationships," explained Pietraszewski. "It shows that the reason the mind attends to race at all is to keep track of people's affiliations. When race proves not to be a factor, the alliance detection system attends to it only minimally, if at all."

"The method we used is entirely unobtrusive," said Tooby. "People don't know what you're measuring, and they couldn't control it even if they did. It shows the principles by which you're categorizing people implicitly. In and of itself, implicitly assigning people to racial categories is not racism. But if you combine the tendency to categorize by race with a negative evaluation, that is racism."

According to Tooby, when race does not predict who's on what side of an issue or who's supporting whom, the mind discards it as an element for identifying alliances. "Traditionally, the general impression people had was that when you learn to be racist, it gets deeply inscribed and sneaks out in subtle ways and it's slow to change," he explained. "One of the striking implications of this research is that the tendency to categorize by race is easy to eliminate.

"The common-sense interpretation of why you see racial categories in the world is because different kinds of people exist, and they look different from each other. Therefore, just like you pick up differences between pears and peaches, you pick up different races in the world," continued Tooby. "But at the genetic level the differences are really hard to see. It's just not the case that people of one race have a large series of genes that people from another race lack; you just don't see that."

The question then becomes why racial differences are so visually salient to people. "We see race in the world because patterns of alliance and cooperation have trained us to sort people into categories that way," he said. "And this training requires that our visual systems pick up tiny differences and amplify them until what we see matches the alliance structure of our social world. Young children are often surprised when adults describe players on their favorite team as being of a different race. They don't see it."

"This research suggests that our minds retrieve race because it predicts alliances in our social world," said Cosmides. "When other cues predict cooperative alliances better, the mind reduces its reliance on racial categories. That's why we refer to the content of your cooperation, not the color of your skin."

For years, she added, social scientists have tried unsuccessfully to identify social situations that decrease the extent to which people categorize others by race. "One of the reasons people had assumed it was so difficult is because it's supported by these perceptual differences," she said. "But we also show that when you have purely perceptual categories—like wearing red shirts versus yellow shirts—and when shirt color doesn't mean anything about coalitions or social differences, people barely pick it up, or they don't pick it up at all. You can't just say people categorize others by skin color because their visual system can't help it."

If categorizing individuals by race is a reversible product of a cognitive system specialized for detecting alliance categories, changing behavior might have more powerful effects than changing minds, the researchers said. "Many people assume you need to change how people think about racial issues to eliminate racism," Cosmides explained. "This research suggests that if cooperation across racial lines continues to increase in our society, our tendency to think about people in racial terms will fall away. Cooperation should change how people think."