Mental retardation has probably existed for as long as mankind has
inhabited the earth. References to seemingly retarded persons appear in
Greek and Roman literature. Examination of Egyptian mummies suggests
that some may have suffered from diseases associated with mental
retardation. Mohammed advocated feeding and housing those without
reason. There is other evidence for favorable attitudes toward the
retarded in early history, but attitudes var- ied from age to age and
from country to country. The concept of remediation did not emerge until
the nineteenth century. Earlier, in 1798, ltard published an account of
his attempt to train the "wild boy of Aveyron." A rash of efforts to
habilitate retarded persons followed. Training schools were developed in
Europe and the United States in the 1800s; however, these early schools
did not fulfill their promise, and by the end of the nineteenth century
large, inhumane warehouses for retarded persons existed. The notion of
habilitation through training had largely been abandoned and was not to
reappear until after World War II.