It’s really quite simple, and nothing especially new. Kindness can often beget kindness. At the very least, it certainly helps soften the edges in a world that some consider a bit rough right now.

And yet, some folks stop themselves from giving other people compliments. Let’s say, for example, you spot someone in an adorable green dress at a coffee shop. But just as you’re about to say, “Cute dress,” your nerves get in the way. There are valid reasons for this anxiety, but researchers say that, when it comes to words of affirmation, the giver is often just as rewarded as the receiver.

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First, some might wonder why people stop themselves from complimenting others. In a study jointly conducted at the University of Pennsylvania and Cornell University, researchers Erica J. Boothby and Vanessa K. Bohns........

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