IQ is indeed standardized to 100, however the underlying results are measurably different over time. There is in fact an upward trend to IQ scores: When IQ

IQ is indeed standardized to 100, however the underlying results are measurably different over time. There is in fact an upward trend to IQ scores: When IQ tests are revised, they are again standardized using a new sample of test-takers, usually born more recently than the first; the average result is set to 100. When the new test subjects take the older tests, in almost every case their average scores are significantly above 100. https://en.m.wikipedia.org/wiki/Flynn_effect https://en.m.wikipedia.org/wiki/Flynn_effect