"A new meta-analysis blends the results of 28 studies that all took measures to mitigate this problem. Based on data from more than 600,000 participants, all told, psychologists Stuart Ritchie and Elliot Tucker-Drob have arrived at a rough estimate of how much an added year of education lifted participants’ IQ scores, on average: between 1 and 5 points."

"The new report does reaffirm the conclusion of psychologists that intelligence—despite being heavily influenced by genetics—is subject to change. The public may not yet be on the same page, according to Ritchie, despite previous research reviews in tune with his paper. “I think the idea that IQ is completely set in stone is still hanging around,” he says. “I think, in this case, we have some of the strongest evidence that it’s not.”"