http://ryan.gaia-local.com/pods

The way Bauerlein sees it, something new and disastrous has happened to America's youth with the arrival of the instant gratification go-go-go digital age. The result is, essentially, a collective loss of context and history, a neglect of "enduring ideas and conflicts." Survey after painstakingly recounted survey reveals what most of us already suspect: that America's youth know virtually nothing about history and politics. And no wonder. They have developed a "brazen disregard of books and reading."

"Our simple view that 'more nerves' is sufficient to explain 'more brain power' is simply not supported by our study," explained Professor Seth Grant, Head of the Genes to Cognition Programme at the Wellcome Trust Sanger Institute and leader of the project. "Although many studies have looked at the number of neurons, none has looked at the molecular composition of neuron connections. We found dramatic differences in the numbers of proteins in the neuron connections between different species".

As the media theorist Marshall McLuhan pointed out in the 1960s, media are not just passive channels of information. They supply the stuff of thought, but they also shape the process of thought. And what the Net seems to be doing is chipping away my capacity for concentration and contemplation. My mind now expects to take in information the way the Net distributes it: in a swiftly moving stream of particles. Once I was a scuba diver in the sea of words. Now I zip along the surface like a guy on a Jet Ski.

Can human beings rev up their intelligence quotients, or are they stuck with IQs set by their genes at birth? Until recently, nature seemed to be the clear winner over nurture.

The globalization paradigm emphasizes the fact that information can now travel 15,000 miles in an instant. But the most important part of information’s journey is the last few inches — the space between a person’s eyes or ears and the various regions of the brain. Does the individual have the capacity to understand the information? Does he or she have the training to exploit it? Are there cultural assumptions that distort the way it is perceived?

Face it: Your IQ is basically hardwired. Still, there are lots of ways to get smarter — to max out your so-called functional intelligence. Think of it as a software upgrade. Our guide to better brainpower shows you how to boost your memory, sharpen your concentration skills, and even pop the right combination of drugs and supplements. Start download now.

A new study by researchers at UC Davis shows how our very short-term "working memory," which allows the brain to stitch together sensory information, operates. The system retains a limited number of high-resolution images for a few seconds, rather than a wider range of fuzzier impressions.

The more I think about it, the more convinced I am Turkheimer's work is one of the keys to unraveling the Race-IQ debate.