And so, sooner or later as I turn the pages of a manuscript, I will become aware of a police siren or the sound of a television program in the next room, and the spell of the book I’m reading will be broken. If it’s a good book I’ll plunge back in and soon lose myself again. If it isn’t, my monitor will sound with growing frequency. I will make a mental note of the places where my attention flagged so that I can help the author analyze where he or she lost me.

Non-professional readers – the public at large, that is – may not have the same powers of self-observation, but they have little trouble speaking up when a book fails to hold their attention. “Boring.” “Couldn’t finish it.” “Put it down, never picked it up again.”

In most cases the responsibility for failure to keeping readers interested rests with the author. But not always. An article by Carl Zimmer in Discover magazine informs us that distractability is far more normal than we may realize. Zimmer cites an experiment conducted by a team of University of California Santa Barbara psychologists led by Jonathan Schooler. The test had to do with a book, and not just any book: “In 2005 he and his colleagues told a group of undergraduates to read the opeing chapters of War and Peace on a computer monitor and then to tap a key whenever they realized they were not thinking about what they were reading. On average, the students reported that their minds wantered 5.4 times in a 45-minute session.”

Wandering minds are one things, but zoning out completely is quite another. Here’s what Schooler and his colleagues discovered:

One of the most striking discoveries repoat imbibing a moderate amount of alcohol actually sharpened concentration. However, before you reach for the vodka bottle, note that there is evidence that a wandering mind offers many significant benefits. “The regions of the brain that become active during mind wandering belong to two important networks,” Zimmer explains. “One is known as the executive control system. Located mainly in the front of the brain, these regions exert a top-down influence on our conscious and unconscious thought, directing the brain’s activity toward important goals.”

“The other regions belong to another network called the default network. In 2001 a group led by neuroscientist Marcus Raichle at Washington University discovered that this network was more active when people were simply sitting idly in a brain scanner than when they were asked to perform a particular task. The default network also becomes active during certain kinds of self-referential thinking, such as reflecting on personal experiences or picturing yourself in the future.”

So, next time you find your mind drifting off while reading a book, it is appropriate for you to ask yourself whether it’s the author’s fault for failing to keep you involved; or is it, rather, just you reflecting on a matter of great importance or solving a problem you couldn’t master before you started reading.

For the full story, read Stop Paying Attention: Zoning Out Is a Crucial Mental State.

Richard Curtis

Every Blogger owes a debt of gratitude to newspapers and magazines. This posting relies on original research and reporting performed by Discover magazine.