I noticed this effect before to. I took an IQ test and printed the results. Later on, I was encouraged to do another test. I did the same test, but remembered

I noticed this effect before to. I took an IQ test and printed the results. Later on, I was encouraged to do another test. I did the same test, but remembered some of the answers so i was able to finish it faster and have more time to think about the more complex tests. Then it dawned on me, taking the test twice, or more than twice, would give me bad results because I was adapting to the problems and solutions. It turns out I misunderstood some of the tests (you could match sideways on a few visuals which I didn't know) so my score improved. If I kept at it, I could probably have a perfect IQ -- but totally bullshit results.