Many people think of IQ as a genetic trait like eye color, something you're born with and stuck with for life. But as Sue Shellenbarger explains on Lunch Break, evidence is mounting that IQ can change over an individual's lifetime.
Many people think of IQ as a genetic trait, like brown eyes or short legs: You're born with it and you're stuck with it. Now, a growing body of research is showing that a person's IQ can rise—and even fall—over the years.
Scores can change gradually or quickly, after as little as a few weeks of cognitive training, research shows. The increases are usually so incremental that they're not immediately perceptible to individuals, and the intelligence-boosting effects of cognitive training can fade after a few months.
In the latest study, 33 British students were given IQ tests and brain scans at ages 12 to 16 and again about four years later by researchers at the Wellcome Trust Centre for Neuroimaging at University College London; 9% of the students showed a significant change of 15 points or more in IQ scores.
