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Carr draws extensively from cognitive neuroscience literature to make his deterministic argument that the Internet is changing who we are. He weaves the findings together well, but on closer inspection, his use of the literature is occasionally questionable and at times outright indefensible. He seems to ignore the scientific literature that has actually found that new digital technologies might be better for how we learn (Gardner, 2006) and how we socialize (Pew, 2010). Furthermore, in his discussion of hypertext and the ways it hurts deep thinking, he draws from a Canadian study (Landow & Delaney, 2001) that, as Rosenberg (2010) argues, does not prove Carr's argument. The study was actually analyzing a specific type of hypertext fiction and was never meant to be extended to all hypertext. This example is a microcosm of Carr's book as a whole, a valid argument that extends itself too far.

Both Carr and Lanier provide inflammatory arguments about the Internet that will surely anger some readers. The strengths of these books are their ability to question widely held beliefs of digital evangelism and to make their criticisms accessible to mainstream audiences (though Gadget occasionally may get too technical for some). As we discussed above, the books do have their problems, but they may still prove valuable in an undergraduate course or any introduction to media criticism. Students would be able to read accessible accounts questioning widely accepted orthodoxy, and they would also be able to evaluate areas where each author takes his argument further than evidence allows.

“We are not only what we read,” says Maryanne Wolf, a developmental psychologist at Tufts University and the author of Proust and the Squid: The Story and Science of the Reading Brain. “We are how we read.” Wolf worries that the style of reading promoted by the Net, a style that puts “efficiency” and “immediacy” above all else, may be weakening our capacity for the kind of deep reading that emerged when an earlier technology, the printing press, made long and complex works of prose commonplace. When we read online, she says, we tend to become “mere decoders of information.” Our ability to interpret text, to make the rich mental connections that form when we read deeply and without distraction, remains largely disengaged.

We can expect as well that the circuits woven by our use of the Net will be different from those woven by our reading of books and other printed works.

James Olds, a professor of neuroscience who directs the Krasnow Institute for Advanced Study at George Mason University, says that even the adult mind “is very plastic.” Nerve cells routinely break old connections and form new ones. “The brain,” according to Olds, “has the ability to reprogram itself on the fly, altering the way it functions.”

his experimental study suggests that students who IM while reading will perform as well but take longer to complete the task than those who do not IM while reading or those students who IM before reading.

Therefore, the impairing effect of multitasking upon learning may be related to reduced brain resources that are available to satisfactorily complete tasks when they're tried together.