“The evidence for an environmental effect is unmistakable,” he reported. He found that the longer the southern-born children were in the North, the higher they scored. The results “suggest that the New York environment is capable of raising the intellectual level of the Negro children to a point equal to that of the Whites.” Klineberg’s studies of the children of the Great Migration would later become the scientific foundation of the 1954 Supreme Court decision in the school desegregation case, Brown v. the Board of Education, a turning point in the drive toward equal rights in this country.
