One criterion for classifying prodigies is: a prodigy is a child, typically younger than 18 years old, who is performing at the level of a highly trained adult in a very demanding field of endeavour.
One criterion for classifying prodigies is. A prodigy is a child, typically younger than 18 years old. A child younger than 18 years old is performing at the level of a highly trained adult in a very demanding field of endeavour. This is typically.