I took my first IQ test in college when I was suffering from major depression and recovering from recent neurological surgery. Years later, after getting unfavorable results as having an average IQ(100), I took it upon myself to take another test on the computer and received a score of 132.
I took the test again on the computer a couple days later, since I did not believe the results. I received the same score of 132. Remembering that Depression can alter one's cognitive abilities, these latter scores seemed to suit my abilities better.
I know that situations and other theories exist about score results. So I can only come to the conclusion that one is born with various abilities and can rise above their circumstances.
In my case, it took medication and psychological help.