Smart phones, dim minds: the way cellular technology affects the cells of our minds. From the essay:

It’s hard to imagine another product that has provided so many useful functions in such a handy form. But while our phones offer convenience and diversion, they also breed anxiety. Their extraordinary usefulness gives them an unprecedented hold on our attention and vast influence over our thinking and behavior. So what happens to our minds when we allow a single tool such dominion over our perception and cognition?

Scientists have begun exploring that question—and what they’re discovering is both fascinating and troubling. Not only do our phones shape our thoughts in deep and complicated ways, but the effects persist even when we aren’t using the devices. As the brain grows dependent on the technology, the research suggests, the intellect weakens….

A 2015 Journal of Experimental Psychology study, involving 166 subjects, found that when people’s phones beep or buzz while they’re in the middle of a challenging task, their focus wavers, and their work gets sloppier—whether they check the phone or not. Another 2015 study, which involved 41 iPhone users and appeared in the Journal of Computer-Mediated Communication, showed that when people hear their phone ring but are unable to answer it, their blood pressure spikes, their pulse quickens, and their problem-solving skills decline….

In an April article in the Journal of the Association for Consumer Research, Dr. [Adrian] Ward and his colleagues wrote that the “integration of smartphones into daily life” appears to cause a “brain drain” that can diminish such vital mental skills as “learning, logical reasoning, abstract thought, problem solving, and creativity.” Smartphones have become so entangled with our existence that, even when we’re not peering or pawing at them, they tug at our attention, diverting precious cognitive resources. Just suppressing the desire to check our phone, which we do routinely and subconsciously throughout the day, can debilitate our thinking. The fact that most of us now habitually keep our phones “nearby and in sight,” the researchers noted, only magnifies the mental toll.

Dr. Ward’s findings are consistent with other recently published research. In a similar but smaller 2014 study (involving 47 subjects) in the journal Social Psychology, psychologists at the University of Southern Maine found that people who had their phones in view, albeit turned off, during two demanding tests of attention and cognition made significantly more errors than did a control group whose phones remained out of sight. (The two groups performed about the same on a set of easier tests.)….

A quarter-century ago, when we first started going online, we took it on faith that the web would make us smarter: More information would breed sharper thinking. We now know it isn’t that simple. The way a media device is designed and used exerts at least as much influence over our minds as does the information that the device unlocks….

Now that our phones have made it so easy to gather information online, our brains are likely offloading even more of the work of remembering to technology. If the only thing at stake were memories of trivial facts, that might not matter. But, as the pioneering psychologist and philosopher William James said in an 1892 lecture, “the art of remembering is the art of thinking.” Only by encoding information in our biological memory can we weave the rich intellectual associations that form the essence of personal knowledge and give rise to critical and conceptual thinking. No matter how much information swirls around us, the less well-stocked our memory, the less we have to think with.

For other posts on the relation between technology and the mind, see here.