"Gratitude is more than just feeling good," says Nathan DeWall, who led the study at Kentucky.
“感恩不仅仅是感觉不错，”内森·德沃尔这么说道，他是肯塔基负责这项研究的人。
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The research: The University of Kentucky’s C. Nathan DeWall asked 62 undergraduates to take 1, 000 milligrams of acetaminophen or a placebo for three weeks.