According to actual IQ tests, scores increase at an approximately equal rate in all societies. I’ve personally never heard a really logical reason for this.
American comic books were translated into every major language?
“According to actual IQ tests, scores increase at an approximately equal rate in all societies. I’ve personally never heard a really logical reason for this.”
The classes have been merging in these societies, and intelligence is a dominant trait.
No, they don’t. Sub-Saharan Africa borders on the moron scale.
People (even low-average people) figure out how to solve the problems on the IQ test.
1. Better nutrition for everyone. There were words for people left retarded due to a lack of iodine - which no longer happens. Retardation due to a lack of protein is now rare, though you still see vision loss due to lack of vitamin A in parts of the developing world.
2. Lower disease burden. Vaccination has essentially wiped out scarlet fever and rubella, diseases that left many children blind, deaf or retarded after it fried their brains.
3. Smaller families, more investment in most children. As family sizes decrease, each child gets more food and higher quality food - so malnutrition doesn’t erode the brain development of children other than the oldest boy and child hunger is less likely to interfere with schooling.
4. More schooling for everyone. More kids worldwide in school instead of being pulled from school to earn a living. School rates are rising, though progress for girls’ education in Asia and Africa still needs to be made. Exposure to more ideas and people away from the immediate family helps improve the abstract reasoning of children. A girl who has never left her home will do poorly on IQ tests, relative to a child who has been with teachers and classmates from age 6 or 7.