Researchers have long studied the origins of racial identities and prejudicial attitudes — starting in childhood. Early studies showed that children typically began to identify as belonging to a specific “race” around age three or four years. Studies have also found that white children begin to show a pro-white bias, including a preference for playing with white peers, when they are as young as three to five years. These findings suggest that antiracism efforts should begin early. For more information, see Vol. 15, No. 3  of the Children’s Mental Health Research Quarterly.