Nation

Follow PBS NewsHour’s complete coverage of U.S. news, reports and analysis.

Mar 26

Why do we tip?

Some people tip to show off. Some people tip to help the server. Others tip out of a sense of duty. Michael Lynn of Cornell University's School of Hotel Administration weighs in on the psychology behind tipping in America.

Friday on the NewsHour, Belgian authorities conduct raids and make arrests across Brussels in connection to Tuesday’s terror attacks. Also: Fighting ISIS on the battlefield and on social media, Shields and Brooks talk the week in politics, how Kentucky is…