In Memory Training Smackdown, One Method Dominates

In Memory Training Smackdown, One Method Dominates Enlarge this image toggle caption Maskot/Getty Images Maskot/Getty Images When it comes to brain training, some workouts seem to work better than others. "Our hypothesis was that training might improve fluid intelligence or IQ," Blacker says. Johns Hopkins University YouTube One group did something called a "complex span" test, which involves remembering the location of an item despite distractions. "The really exciting part was that we found the dual n-back group showed significant changes in their brain activity," Blacker says.