Other researchers, such as Dr. Mary M. Wagner of SRI International, find these comparisons unpersuasive. She argues that, because so many Black children are born into poverty, they experience high rates of low-weight births, homelessness and psychological trauma that would logically cause emotional and intellectual difficulties. In fact, the Association of Black Psychologists says that 14 percent of America's children are African-American, but that the percentage in foster care and/or awaiting adoption is 29 percent. Children usually wind up in foster care because their parents were abusive, neglectful, criminal or addicted, and 29 percent is close to the percentage in special education labeled "emotionally disturbed." In addition, the higher ratio of Black boys to girls in special education mirrors that of Whites.