Credit: Family walk photo via Shutterstock |
By
Trevor Stokes
To boost your brain's creativity, take a hike,
according to new research. But consider leaving the electronic gadgets at home.
Backpacking for four days in the wilderness
without toting a laptop, iPhone or other high-tech device increased the
creative problem-solving skills of people by 50 percent.
The study volunteers included 30 men and 26 women
(whose average age was 28) who participated in Outward Bound, a group that runs
leadership expeditions for young people and adults across Alaska, Colorado,
Maine and Washington.
Before the hikers went on their merry way, 24 of
them took a creative problem-solving test. Then, four days into the hike, the
remaining 32 took the same test. The test, known as the Remote Associates Test,
is commonly used to assess creativity by
measuring how people associate different words. For example, the researchers
asked the hikers to identify a word that is connected to beans, golf and envy.
The goal of the test-takers was to come up with the word "green" on
their own, with no time limitation. Before the hike began, participants
answered an average of four out of 10 questions correctly. Those who took the
test after four days of hiking correctly answered six of the 10 questions.
While a difference of two correct responses may not seem like a lot, the 50
percent improvement is meaningful and statistically significant. "This is
not a small effect. This is a bases-loaded home run in terms of its effect
size," said study author David Strayer, a psychology professor at the
University of Utah.
The beneficial effects of nature on the mind have
been known anecdotally for generations, perhaps most famously noted by author
Henry David Thoreau. He spent two years living a rustic life by Walden Pond and
published "Walden," his back-to-nature account, in 1854.
Previous research has shown that exposure to nature replenishes basic brain functions like attention span, but little has been known about higher-level thinking properties, such as those involved in solving complex problems. The current study is the first measure of nature's influence on creative problem-solving, Strayer said.
Previous research has shown that exposure to nature replenishes basic brain functions like attention span, but little has been known about higher-level thinking properties, such as those involved in solving complex problems. The current study is the first measure of nature's influence on creative problem-solving, Strayer said.
"Nature seems to be one of the most effective
ways to put one's mind at ease and enhance creative thinking by setting aside
worries," Strayer said.
Stimuli from trees, streams, birds and the wind are softer than the jarring sounds of car horns, cellphones and other accoutrements of modern life. As result, people aren't as distracted. And that enhances creativity, Strayer said.
Benjamin Baird, a graduate student at the
University of California Santa Barbara who has researched the effects of
distraction on creativity, agreed.
"It is good, strong, very interesting work
and a very interesting finding, but it will require some important follow-up to
realize its full potential," said Baird, who was not involved in the
study. Nature, he noted, may not have had as large an influence as thought.
"It may well be that some of the effects have to do with interacting with
a group of people over a period of time," Baird said. Plus, the hikers
took the test in very different environments, which could have influenced the
test results.
"It would have been nice to have had another
group that had returned from a hike perform the task in an identical
environment in the laboratory to see whether there was still an effect,"
Baird said.
Future research from Strayer will include
measuring specific brain activities and stress hormones during hikes to
determine how interactions with nature might affect how the brain
functions.
"There's some concern that being in a modern
urban environment with horns and technology constantly depletes nature's
restorative properties," Strayer said. His advice: If you're going to go
on a hike, don't bring your iPhone or cellphone. "Instead, try to focus on
being in the environment you're in."
The
study appeared (Dec. 12, 2012) in the online journal PLOS ONE.
Pass
it on: A walk in nature can help boost your
ability to creatively solve problems.
Why Your
Problem-Solving Skills May Sharpen with Age — Stephanie Bucklin
Why Your
Problem-Solving Skills May Sharpen with Age
|
By
Stephanie Bucklin
You may get better at creative problem solving as you age, new research
suggests.
Researchers reviewed more than 100 studies
on problem solving and aging that were conducted from
1960 to 2016, looking at both data on people's behavior and evidence from brain
scans. The scientists found that, generally, older adults' ability to focus and
avoid distraction was not as strong as that of young adults' — but that this in
turn may help older adults to perform better on some creativity and problem-solving tasks.
The researchers were surprised at the strength of
the findings that a lowered ability to focus and avoid distraction could improve people's performance
on tasks that require creativity, said Lynn Hasher, a co-author of the paper
and a professor of psychology at the University of Toronto. This is especially
surprising, she said, because the ability to focus "has previously been
seen as a basic requirement for success in learning," she told Live
Science.
The ability to focus does help people with some
specific, goal-driven tasks, such as reading, the researchers said.
For example, one study included in the review showed that, while reading, older
adults were slowed down more than younger adults by the presence of certain
words that were added to a passage in order to distract a reader. In addition,
older adults had more trouble than younger adults in recalling
key information they had read when distractors were present, according
to that study, which was published in 2012 in the journal Experimental Aging Research.
However, the ability to focus does not help — and
may actually hinder — people's performance on tasks that require broader
attention, Hasher and her colleagues concluded. For example, in a 2016 study, published in the journal Psychonomic Bulletin
& Review, researchers gave participants a test in which they were shown
pictures of faces with names superimposed over them. Although the study
participants were instructed to ignore the names, the researchers tested the
people on which names they remembered.
Surprisingly, older participants were better at matching the faces to the names than the younger participants were, even though memory for faces and names tends to decline with age.
Surprisingly, older participants were better at matching the faces to the names than the younger participants were, even though memory for faces and names tends to decline with age.
Another study,
published in 2006 in the journal Psychology and Aging, similarlyfound that
adults ages 60 to 75 had a better memory for "distractors" than young
adults ages 18 to 30 did. In this study, participants looked at drawings with
"distractor" words superimposed over them. Again, although the
participants were instructed to ignore the words, the researchers tested them
on whether they remembered the words. Results showed that the older
participants outperformed their younger counterparts.
Together, these studies suggest that although
young adults may be better at disregarding distracting information, they later
have poorer recall of this information.
The researchers concluded in their review that
older adults' "broader scope of attention" is better suited for tasks
that require integrating larger amounts of information — such as solving
problems in creative ways, or recognizing patterns over time — rather than
tasks that require a narrower focus.
An area of the brain called the frontoparietal
region is associated with focus, processing relevant information and
disregarding distracting information, the researchers said. Evidence suggests
that, as people age, this region's activity decreases, which may contribute to
the reduced ability to focus and avoid distractions, the researchers said.
However, this decrease in activity may allow older adults to draw on a broader
range of knowledge to come up with creative solutions to problems.
For example, a 2005 study published in Brain found that participants with
a single brain lesion in the front of the brain (as determined by a CT or MRI
scan) were better at solving a creative math problem than participants who had
no lesions in their brains. While 82 percent of those with the lesion could
solve the problem, only 43 percent of participants with no lesion could do so.
The authors of the review noted that more
research is needed to show whether a reduced ability to focus and weed out
distractions affects everyday behavior. In addition, the boundary between older
and younger adults is not concrete, and was not specifically defined in the
review.
Of course, people's ability to focus doesn't
depend only on their age. A positive mood, lack of sleep and consumption of
alcohol can all contribute to a general lack of focus and increased
distraction, so there may be more than one avenue to achieve better
problem-solving, the researchers said.