How and when we should say ‘thank you’ 

The World

As kids here in the US, we're always taught to say “thank you” whenever possible. It's a nice thing to do, the right thing to do. But a thank you as we understand it here is not always the same in other languages and cultures. Host Marco Werman speaks with, Elaine Hsieh, a professor at The University of Oklahoma, where she studies language and culture.