The Flynn Effect shows IQ scores globally have been steadily rising (about three points per decade).
If scores keep inflating, are IQ tests just measuring how well we adapt to modern, abstract problems, rather than pure intelligence? Is the constant “re-norming” proof the test is tracking a skill, not a fixed trait? What’s your take on this “intelligence inflation”?
I think the issue isn’t that the test is constantly measuring the wrong thing, but that the scores have to be constantly re-normed to maintain the meaning of a score like 100. If re-norming didn’t occur, the average person today would have an IQ of around 120 on a 1950s test, which simply means the test’s scale became meaningless as a measure of relative standing. The re-norming is proof the test is tracking a shifting population capability, not that the test is fundamentally broken.
The Flynn Effect doesn’t prove tests are measuring the wrong thing, it shows that environmental factors (better nutrition, education, reduced disease, more abstract thinking in daily life) are improving the cognitive abilities that IQ tests measure. IQ tests aren’t supposed to measure some mystical “pure” intelligence divorced from brain health and learning. They measure real cognitive performance, which can genuinely improve across generations. Re-norming is just updating the comparison group, not admitting failure. The gains are mostly in fluid reasoning and abstract problem-solving, which are legitimate cognitive skills. Intelligence has always been both trait and skill.
Basically, constant re-norming isn’t a bug since it only reveals intelligence is more trainable than we thought. Tests still predict educational and career outcomes well, so they’re measuring something meaningful. But the Flynn Effect proves these are learnable cognitive skills shaped by environment, not some unchangeable genetic ceiling.