IQ scores have been consistently increasing over the last century, by more than a point per year. There have been some reports of drops in the most advanced nations; mostly since the 1990s, not 1970s. Whether higher scores actually means higher intelligence is a different question — maybe people are just better at taking the test. https://en.wikipedia.org/wiki/Flynn_effect
IQ scores have been consistently increasing over the last century, by more than a point per year. There have been some reports of drops in the most advanced nations; mostly since the 1990s, not 1970s. Whether higher scores actually means higher intelligence is a different question — maybe people are just better at taking the test. https://en.wikipedia.org/wiki/Flynn_effect