As IQ scores were not available for most of the presidents, Simonton used a "historiometric" approach to estimate their results: In the conventional approach to measuring IQ, Snopes.com notes ...

A rigorous nine-year research review looking at the relationship between fluoride and intelligence in children concludes that ...

The Environmental Protection Agency is reevaluating its support for fluoridation because of reported drops in IQ scores, while the Supreme Court is reconsidering death row cases on the basis that ...