By this point it’s old news that your explicit attitudes about race don’t tell the whole story about racism. When you sit down to introspect carefully, you might end up thinking consciously: “of course people of all races are equal.” But that simply does not imply that you are free from racism in your mental life.

A flurry of studies over the past few decades have shown that even self-avowed non-racists can still be robustlyimplicitly biasedagainst black people. One classic test,which you can take yourself online, has been used toshowthat people tend to more quickly associate the words “black” and “white” with stereotypical properties than with counter-stereotypical ones.One studyfound that people were more likely to misidentify a tool as a gun when they had been primed by seeing a black face than when they had been primed with a white face.Another studyfound that implicit negative associations with black faces were correlated with nonverbal unfriendliness in face-to-face interactions with black people.

You are likely to have similar associations and quick reactions, even if you think you are explicitly non-racist or positivelyanti-racist. To mark the difference between these associations on the one hand and your stated attitudes on the other hand, many cognitive scientists call the associations “implicit” and your stated or conscious attitudes “explicit.” But how is it possible for you to take yourself not to be racist, and nonetheless have these ‘implicit’ associations? What psychological explanation can we give to make sense of this dissonance?

There is not much agreement about how to think about the nature of this ‘implicit’ phenomenon, even amongthose who agree that the phenomenon is well established. Do people really have ‘hidden’ racistbeliefs? Or are there simply certainimpulsiveprocesses that give rise to these demonstrated associations and reactions, without issuing in full-fledged racist beliefs? One new book out this year,An Introduction to Implicit Bias(ed.Erin BeeghlyandAlex Madva), collectstwelve new papersthat comb through these issues.

One of these papers, byCéline Leboeuf, raises an important possibility: our racist biases might be best understood as a form of perceptual habit—a habit of paying specific kinds of visual attention to young black men, for instance. This raises a more general possibility too: that our racist biases manifest as mental habits. You might habitually imagine some dangerous scenario playing out when you think of a young black man walking at night. Even these transitions in imaginative thought can manifest entrenched biases, and potentially affect your behavior.

Thinking of implicit biases as habits is helpful in at least three ways. First, it’s easy to see that your habits aren’t always cultivated by you. For better or for worse, your habits can be instilled in you by your social environment. Your parents probably gave you the habit of brushing your teeth before you go to bed. And your culture has probably given you a habit of associating black men with violence. Second, what you do habitually doesn’t always rise to consciousness. Think of how you can take off your shoes after coming in the door without giving it a second thought. This feature of habits could help us explain how pernicious mental associations can go unnoticed by you while you’re not paying attention. Third, if implicit biases really are a matter of mental habit, they might deserve specific kinds of interventions. To break a habit, you have topracticedoing something differently. It’s not enough just to realize that you have that habit, or to realize it and think that it’s bad. You have to put in some time to change it yourself.

Researchinto cognitive retraininginterventionsto change implicit biases hasrapidly developedover the past decade or so. These interventions involve affirming counter-stereotypical statements repeatedly, establishing new positive associations where there were previously negative ones, and exposing yourself to representations of people that go against stereotypical depictions of them. Some studies suggest that cognitive interventions canreduce implicit biases in the long term. Techniques are still in development, but it is worth paying close attention. Despitesounding strange, techniques for retraining our own minds will be one important part of our ongoing struggle to combat racism wherever we find it.

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