Teen Brains' Growing Pains

"The roller-coaster teenage years can take IQs along for the ride. A person’s IQ can nosedive and climb sky-high during adolescence, while corresponding brain regions wax and wane in bulk, researchers report online October 19 in Nature. The results suggest that the IQ number given to a child is not immutable, as many researchers believe, says neuroscientist Richard Haier of the University of California, Irvine."