The AGXL has a number describing the intelligence of people in comparison to the rest of the population. The original definition of IQ when measuring the intelligence of children was: IQ is a ratio of the mental age to the physical age multiplied by 100.
The mental age was calculated on the basis of the average results of a test in the respective age category. The test papers include various analytical questions and with proper logic and reasoning which gives initial boosts to the kids and enthusiasm to get the paper solved.
