Every ten years, the average IQ goes up by about 3 points. Psychologist James Flynn has spent decades documenting this odd fact, which was eventually dubbed the Flynn Effect. The question is, does the Flynn Effect mean we’re getting smarter? Not according to Flynn, who argues that the effect simply reveals that IQ measures teachable skills rather than innate ones. As education changed over time, kids got better at standardized tests like the IQ test. And so their scores went up.
But some thinkers cling to the idea that IQ measures an inborn intelligence that transcends culture and schooling. If that’s true, one would expect that the most abstract, “culture free” elements of IQ testing wouldn’t be subject to the Flynn Effect. But they are. And now two psychology researchers have shown why that is.