In the American South at the turn of the twentieth century, the legal segregation of the races and psychological sciences focused on selfhood emerged simultaneously. The two developments presented conflicting views of human nature. American psychiatry and psychology were optimistic about personality growth guided by the new mental sciences. Segregation, in contrast, placed racial traits said to be natural and fixed at the forefront of identity. In a society built on racial differences, raising questions about human potential, as psychology did, was unsettling. The introduction of psychological.