With iq tests is it possible to increase ur iq score over time? Say you score higher 5 years after ur first test. Is that taken into account when compiling data on iq tests?,(reply>), Not really. Now, you might have been ill or otherwise distracted, but otherwise IQ tests are stable over time.,(reply>), According to the latest book (Human Diversity) no tests, training, practice etc. makes any significant difference.