According to Gillborn and Youdell (2001), which idea has taken the place of IQ in numerous UK schools, given that many sociologists consider older theories of inherited intelligence and IQ testing to be outdated?

Explanation

Gillborn and Youdell (2001) observed that the concept of 'ability' has largely replaced IQ as a key notion in many UK schools, reflecting a shift away from discredited ideas about inherited intelligence.