Children exposed to higher fluoride levels have lower IQs, a ... - CNN
3 days ago · A rigorous nine-year research review looking at the relationship between fluoride and intelligence in children concludes that as fluoride levels rise, IQ drops. Every 1 part per million …
What a new study does — and doesn’t - Los Angeles Times
3 days ago · A new report that analyzes research on fluoride and IQ scores finds that the more fluoride a child is exposed to, the lower he or she tends to score on intelligence tests. The …
Roman Empire’s use of lead lowered IQ across Europe for 180 …
2 days ago · The intelligence quotient (IQ) of an average resident of the ancient civilization is likely to have fallen by 2.5 to 3 points as a result of exposure to the toxic metal, according to …
Is IQ overrated? Why some psychologists say it's better to measure ...
Dec 28, 2024 · Psychologist Howard Gardner, a research professor at Harvard University, argues that the famous so-called “intelligence quotient” tests pioneered by French psychologist Alfred …
What is IQ — and how much does it matter? - Science News …
Oct 13, 2016 · IQ, short for intelligence quotient, is a measure of a person’s reasoning ability. In short, it is supposed to gauge how well someone can use information and logic to answer …
Map Shows Which States Have the Highest IQs - Newsweek
Aug 1, 2024 · A map reveals the U.S. states with the highest IQs, giving a glimpse into the country's intellectual fabric and the factors influencing American intelligence.
Americans’ IQ scores are lower in some areas, higher in one
Mar 20, 2023 · IQ scores have substantially increased from 1932 through the 20th century, with differences ranging from three to five IQ points per decade, according to a phenomenon …
IQ Scores Are Falling in "Worrying" Reversal of 20th Century ...
Jun 13, 2018 · A defining trend in human intelligence tests that saw people steadily obtaining higher IQ scores through the 20th century has abruptly ended, a new study shows. The Flynn …
Intelligence - Latest research and news - Nature
Dec 18, 2024 · Intelligence is the the mental capacity for abstract reasoning, planning ability, logical thought, conceptual complexity and problem solving. High intelligence is thought to be …
Online tests suggest IQ scores in US dropped for the first time in ...
Mar 10, 2023 · In short, the effect suggests that the human race grows smarter with each successive generation—the average intelligence quotient (IQ) increases. Prior research has …