Q: When do you have to reciprocate a party invitation? I always thought that if it’s a small event in someone’s home, it’s important to reciprocate. What about a payback for having been included in a ...

DEAR MISS MANNERS: Our neighbors of over 10 years suddenly and surprisingly invited us to their home for dinner. In all those years, we were casually friendly, but shared nothing more than short ...

You've written your list, you've checked it twice. The holidays are officially here, and you're working to ensure that every last soul on your scroll (or named in your Notes app) is going to get ...

DEAR MISS MANNERS: Our neighbors of over 10 years suddenly and surprisingly invited us to their home for dinner. In all those years, we were casually friendly, but shared nothing more than short ...

What do you make of friends who don’t reciprocate? (credit: Gemini) Do you have friends who don’t reciprocate? What would you do if friends depended on you to host the party all the time? Hi Irene, My ...

Reciprocity (give-and-take exchange) is essential for successful human interactions. Feeling motivated to return a favor (and feeling owed for a favor) drives social behavior, personal interaction, ...

Non-human animals consider the value of previously received help when deciding whether to help a social partner, according to a new study in rats. Until now, it was unclear whether animals other than ...