what evidence used in the decision in brown vs board of education?

In Brown v. Board of Education, the Supreme Court relied on sociological evidence to demonstrate the detrimental effects of segregation on African American children. The landmark case referenced studies, including the Doll Test by psychologists Kenneth and Mamie Clark, which showed that segregated schooling instilled feelings of inferiority in Black children. This evidence underscored that "separate but equal" educational facilities were inherently unequal, leading to the Court's unanimous decision to declare racial segregation in public schools unconstitutional.