To be a really successful giver of gifts, a person usually needs to get inside the head of the intended recipient. Unfortunately, psychological studies reveal that givers and receivers have a hard time understanding each other's mind-sets, which can make for a tricky holiday experience.

Take regifting. That Crock-Pot your well-meaning aunt gave you last year that you are shamefully contemplating wrapping up for your dear neighbor this year? Research shows you can go right ahead and regift it, shame intact. Your aunt probably...