“There is even research to suggest that blocking off enough alone time is an important component of a well-functioning social life — that if we want to get the most out of the time we spend with people, we should make sure we’re spending enough of it away from them. Just as regular exercise and healthy eating make our minds and bodies work better, solitude experts say, so can being alone.

One ongoing Harvard study indicates that people form more lasting and accurate memories if they believe they’re experiencing something alone. Another indicates that a certain amount of solitude can make a person more capable of empathy towards others. And while no one would dispute that too much isolation early in life can be unhealthy, a certain amount of solitude has been shown to help teenagers improve their moods and earn good grades in school. (…)

Solitude has long been linked with creativity, spirituality, and intellectual might. The leaders of the world’s great religions — Jesus, Buddha, Mohammed, Moses — all had crucial revelations during periods of solitude. The poet James Russell Lowell identified solitude as “needful to the imagination;” in the 1988 book “Solitude: A Return to the Self,” the British psychiatrist Anthony Storr invoked Beethoven, Kafka, and Newton as examples of solitary genius. (…)

An intriguing study that suggests memories are formed more effectively when people think they’re experiencing something individually. (…) Burum found that the participants who had been told the person behind them was doing a different task — namely, identifying sounds rather than looking at pictures — did a better job of remembering the pictures. In other words, they formed more solid memories when they believed they were the only ones doing the task. (…)

The first invokes a well-known concept from social psychology called “social loafing,” which says that people tend not to try as hard if they think they can rely on others to pick up their slack. (If two people are pulling a rope, for example, neither will pull quite as hard as they would if they were pulling it alone.) But Burum leans toward a different explanation, which is that sharing an experience with someone is inherently distracting, because it compels us to expend energy on imagining what the other person is going through and how they’re reacting to it.

“People tend to engage quite automatically with thinking about the minds of other people,” Burum said in an interview. “We’re multitasking when we’re with other people in a way that we’re not when we just have an experience by ourselves.”

Perhaps this explains why seeing a movie alone feels so radically different than seeing it with friends: Sitting there in the theater with nobody next to you, you’re not wondering what anyone else thinks of it; you’re not anticipating the discussion that you’ll be having about it on the way home. All your mental energy can be directed at what’s happening on the screen. According to Greg Feist, an associate professor of psychology at the San Jose State University who has written about the connection between creativity and solitude, some version of that principle may also be at work when we simply let our minds wander: When we let our focus shift away from the people and things around us, we are better able to engage in what’s called meta-cognition, or the process of thinking critically and reflectively about our own thoughts.

Other psychologists have looked at what happens when other people’s minds don’t just take up our bandwidth, but actually influence our judgment. It’s well known that we’re prone to absorb or mimic the opinions and body language of others in all sorts of situations, including those that might seem the most intensely individual, such as who we’re attracted to. While psychologists don’t necessarily think of that sort of influence as “clouding” one’s judgment — most would say it’s a mechanism for learning, allowing us to benefit from information other people have access to that we don’t — it’s easy to see how being surrounded by other people could hamper a person’s efforts to figure out what he or she really thinks of something. (…)

On average, the kids in his sample felt better after they spent some time alone than they did before. Furthermore, he found that kids who spent between 25 and 45 percent of their nonclass time alone tended to have more positive emotions over the course of the weeklong study than their more socially active peers, were more successful in school and were less likely to self-report depression. (…)

Spending a certain amount of time alone, the study suggests, can make us less closed off from others and more capable of empathy — in other words, better social animals. “People make this error, thinking that being alone means being lonely, and not being alone means being with other people,” Cacioppo said. “You need to be able to recharge on your own sometimes. Part of being able to connect is being available to other people, and no one can do that without a break.”

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By Leon Neyfakh, The Boston Globe, March 6, 2011

See also: William Deresiewicz on solitude, Lapidarium