Psychologists define mindfulness as a state of non-distraction characterised by full engagement with our current task or situation.
Mind-wandering may not be a serious issue in many circumstances, but in tasks requiring attention, the ability to stay focused is crucial.
To investigate whether mindfulness training can reduce mind-wandering and thereby improve performance, the scientists at University of California, Santa Barbara randomly assigned 48 undergraduate students to either a class that taught the practice of mindfulness or a class that covered fundamental topics in nutrition.
Meanwhile, the nutrition class taught nutrition science and strategies for healthy eating, and required students to log their daily food intake.
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Within a week after the classes ended, the students were tested again. Their scores indicated that the mindfulness group significantly improved on both the verbal GRE test and the working memory capacity test. They also mind-wandered less during testing. None of these changes were true of the nutrition group.
"This is the most complete and rigorous demonstration that mindfulness can reduce mind-wandering, one of the clearest demonstrations that mindfulness can improve working memory and reading, and the first study to tie all this together to show that mind-wandering mediates the improvements in performance," Mrazek said.
The study was published in journal Psychological Science.