Language Deprivation Experiments - in History

In History

Ancient records suggest that this kind of experiment was carried out from time to time, though the authenticity of these records is unconfirmable. An early record of an experiment of this kind can be found in Herodotus's Histories. According to Herodotus, after carrying out such an experiment, the Egyptian pharaoh Psamtik I concluded the Phrygian race must predate the Egyptians since the child had first spoken something similar to the Phrygian word bekos, meaning "bread."

An alleged experiment carried out by Holy Roman Emperor Frederick II in the 13th century saw young infants raised without human interaction in an attempt to determine if there was a natural language that they might demonstrate once their voices matured. It is claimed he was seeking to discover what language would have been imparted unto Adam and Eve by God.

The experiments were recorded by the monk Salimbene di Adam in his Chronicles, who wrote that Frederick encouraged "foster-mothers and nurses to suckle and bathe and wash the children, but in no ways to prattle or speak with them; for he would have learnt whether they would speak the Hebrew language (which had been the first), or Greek, or Latin, or Arabic, or perchance the tongue of their parents of whom they had been born. But he laboured in vain, for the children could not live without clappings of the hands, and gestures, and gladness of countenance, and blandishments."

Several centuries after Frederick II's experiment, James IV of Scotland was said to have sent two children to be raised by a mute woman isolated on the island of Inchkeith, to determine if language was learned or innate. The children were reported to have spoken good Hebrew. This experiment was later repeated by the Mughal emperor Akbar, who held that speech arose from hearing, thus children raised without hearing human speech would become mute.