For as long as intelligence has been studied, we’ve been told that our raw IQ is mostly a genetic hand-me-down. Sure, we've learned how to sharpen the knives we were handed and increase our “effective ...

There’s a common assumption that intelligence is largely determined by genetics. After all, previously published studies found that identical twins raised apart—who share nearly identical DNA—tend to ...

Intelligence plays a big role in shaping a country's success, whether it's in technology, innovation, or education. A common way to measure intelligence is through IQ tests, which assess abilities ...