You always suspected babies were no good, didn’t you? They’re loud, narcissistic, spoiled, volatile and not exactly possessed of good table manners. Now it turns out that they’re racists too.
The latest evidence for that decidedly unlovely trait comes from research out of the University of Washington that actually sought to explore one of babies’ more admirable characteristics: their basic sense of fairness. In the study, 15-month-old toddlers watched an experimenter with a collection of four small toys share them either evenly or unevenly with two other adult volunteers. When allowed to choose which experimenters the babies wanted to play with later, 70% of them preferred the ones who had divided the toys evenly.
Nice, but there was an exception: when the two adults who were receiving the evenly or unevenly divided toys were of different races and the race of the one who got more toys matched the babies’ own, the 70% preference for the fair distributor dropped and the share of babies wanting to play with the unfair one rose. The implication: unfairness is bad, unless someone from your clan is getting the extra goodies.
“If all babies care about is fairness, they would always pick the fair distributor,” said University of Washington associate professor psychology of Jessica Somerville, in a statement that accompanied the study. “But we’re also seeing that they’re interested in consequences for their own group members.”
OK, so that doesn’t speak well of human nature at even its sweetest and most ingenuous stage. But here’s the thing: if we weren’t rank racists when we were very little, the species probably never would have survived. The idea of in-group bias is well established in behavioral science, and it has its roots long ago, in humanity’s tribal era. The fact is, the people in your own band are more likely to nurture you, care for you and protect you from harm, while the people from the tribe over the hill are more likely to, well, eat you.
As soon as you become old enough to toddle away from the campfire and wander out on your own, it thus pays to recognize, at a glance, what an alien other looks like. Sometimes it’s dress or hairstyle that provides the telltale cue, but just as often it’s skin tone, hair texture and the shape of facial features. It was the human tendency to migrate and settle in parts of the world with varying climates that caused these physical differences to emerge in the first place.
“We didn’t start off as a multi-racial species,” psychologist Liz Phelps of New York University told me in my upcoming book about narcissism. “We have races simply because we dispersed.” Once we did disperse, however, those differences in appearance—skin tone especially—turbocharged our suspicion of the outsider.
A study by psychologist Yarrow Dunham, now at Yale University, showed that color is an especially salient feature for very young people to overlook. Children in a classroom experiment who were divided into two groups and given two different color t-shirts to wear were, later on, much likelier to remember good things about all of the children who wore their color shirt and bad things about the ones who wore the other. “Kids will begin to show these preferences right away, in the lab, on the spot,” Dunham told me. “It’s not just a preference, it’s also a learning bias—the children actually learn differentially about the in-group and the out-group.”
Sometimes, for small children, there can be a certain sweetness to the bias, since they may feel concern for the person of a different race, the assumption being that anyone who doesn’t look like them must be unhappy about that fact. When my older daughter was three or four years old, we approached an African American cashier in a store and she asked her, “Are you sad that you don’t have light skin?” I winced and began to splutter an apology, but the woman answered, “No, honey. Are you said that you don’t have dark skin?” When my daughter said no, the woman responded, “So you see? We’re both happy with who we are.”
The sweet phase of simply noticing racial differences fades, to be replaced either by a higher awareness of the meaningless of such matters or a toxic descent into assigning ugly, negative values to them. Which way any one baby goes depends on upbringing, community, era, temperament and a whole range of other variables. What we will never be, like it or not, is an entirely post-racial species. Our better impulses may wish that weren’t so, but our ancient impulses will always test us. They are tests we must, from babyhood, learn to pass.
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Write to Jeffrey Kluger at jeffrey.kluger@time.com