A new psychological study showed many Caucasian children believe African American's feel less pain. This belief was present as young as the age of seven and was prevalent by the age of 10. "Our research shows that a potentially very harmful bias in adults emerges during middle childhood, and appears to develop across childhood,"  the study's lead investigator, Rebecca Dore, a Ph.D. candidate in developmental psychology at the University of Virginia, said in the news release.