Dan Hurley is writing a book about new research into how people can increase their intelligence. His latest article for DISCOVER, published in April, was about how the brain forms memories.
Can you consciously increase your intelligence? That question was the title of an article I wrote in April for the New York Times Magazine, examining studies showing that people who train their working memory with specially designed games show increases in their fluid intelligence, the ability to solve novel problems and identify patterns. In particular, the article focused on a game called the N-back task, in which a participant is challenged to keep track of spoken words or locations on a grid as they continuously pile up.
While some skeptics doubt that anything as profound as intelligence can be increased in as little as a month by playing a silly game, far stranger methods are also being tested. And the results keep getting published in respectable journals, showing significant effects.
Perhaps the most seemingly absurd approach is the use of “first-person shooter” video games, like Call of Duty. Studies by Daphne Bavelier at the University of Rochester have found that practicing the games improved performance on an array of untrained sensory, perceptual, and attentional tasks. Notably, the transfer is broad enough to improve trainees’ ability to distinguish an auditory signal from white noise, despite the fact that no auditory training was involved in the games, and that two distinct brain areas are involved in auditory and visual processing.
“This is not the first kind of activity you’d think is good for the mind,” Bavelier told me. “But there is a whole field of research showing that executive control and the ability to decide whether to attend to something or not is a main determinant of intelligence. In that sense the games are making you smarter. Whether they will make you do better on an exam, I cannot say.”