When participants were well rested, they scored well on a helping behavior test. But after sleep deprivation, 78 percent had less of a desire to help others.
In the first experiment, researchers performed functional magnetic resonance imaging scans of the brain and asked questions to 24 adults after eight hours of sleep and after a night with no sleep. When they were well rested, the participants scored well on a helping behavior test. But after sleep deprivation, 78 percent had less of a desire to help others, even when it came to friends and family.
There’s a silver lining to all that ungenerous behavior, the researchers write: Unlike personality traits, sleep can be modified — and both getting enough and helping others do the same might make for a better world.
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