Advice giving, especially unsolicited, is tricky. Being on the receiving end can be annoying and make us defensive. But giving advice can be frustrating, as well, particularly when the intended beneficiary of our wisdom makes it clear it isn't welcome—or takes the same recommendations we've been giving for months from someone else. The whole advice issue is typically hardest to navigate with the person we know the best: our spouse or partner. In a series of six studies that followed 100 couples for the first seven years of marriage, researchers at the University of Iowa found that both husbands and...