Training Working Memory: Why and How
"Working memory relates to intelligence. The reason is that thinking involves streaming into the brain's "thought engine" chunks of information held in working memory. The working memory streams in, much like a Web video streams into your computer. The more you can hold in working memory, the more information the brain has to think with—that is, the smarter it can be.
IQ is not fixed. It improves dramatically in the early school years in all children. Moreover, a recent study shows that both verbal and non-verbal IQ can change (for better or worse) in teenagers."
Read the whole article on: http://www.psychologytoday.com/blog/memory-medic/201203/training-working-memory-why-and-how