New research from the GeorgiaInstitute of Technology says that online games that promise to promote mental function and boost intelligence are only halfway telling the truth. They say the games might improve memory but can’t improve overall intelligence. It’s been thought that working memory capacity--the ability to recall information stored in the mind quickly--and general fluid intelligence—the ability to infer relationships and do complex reasoning--go hand in hand. After putting graduate students to the test, they found you may be able to improve your working memory capacity, but not fluid intelligence. One researcher said, it’s like comparing height and weight, just because intelligence and memory capacity are closely correlated, it doesn’t mean that they’re the same thing.