You have been assigned Role A (Sender) .

You now have to wait 10 seconds to think about which offer you want to make. You will not be able to click on Next during those 10 seconds, use that time to think about your answer.

Recall that you have to make an offer about how to split 100 cents between you and participant B. If B accepts your offer of X cents, you would keep (100-X) cents and B would keep X cents. If B rejects it, both of you would get 0.