Betty sent Christmas cards to everyone in her address book and received Christmas cards in return from most of the recipients.This result is consistent with the social behavior known as

Question

Quizplus · Accepted Answer

Reciprocity is the social norm of responding to a positive action with another positive action. In this case, Betty sent Christmas cards (a positive action) to everyone in her address book, and most recipients responded with Christmas cards (another positive action) in return. This is an example of reciprocity in action.

Betty Sent Christmas Cards to Everyone in Her Address Book