 Continuing debates about the nature of intelligence revolve on whether intelligence can be characterized by a single factor known as general intelligence, multiple factors (e.g., Gardner's theory of multiple intelligences), or whether it can be measured at all.In practice, standardized instruments such as the Stanford-Binet IQ test and the WISC are widely used in economically developed countries to identify children in need of individualized educational treatment.Children classified as gifted are often provided with accelerated or enriched programs.