To different individuals, it may or may not have any significance. The quantity is typically referred to as "speed", and you're free to decide for yourself whether it has any relevance in your life.
IQ does not change with age, rather a specific test deigned for 5 year olds is needed to determine an individuals IQ. Average will still be 100.
No, IQ is the ability to learn, which does not change much over the life of an individual. There is a lot of discussion about the testing methods and how accurate they are for younger individuals, but the factor stays pretty consistent regardless of age.
It means "change". Change from one form to another.It means "change". Change from one form to another.It means "change". Change from one form to another.It means "change". Change from one form to another.
you DONT change