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1. Instructions for
the 2nd set of rounds

2. What’s new? Text-based communication in a chatroom
• The second set of rounds is identical to the previous rounds except
for ONE change.
• Now, every User can communicate with other Users using a chat
window.
• However, only User 1 can communicate with the Provider, while
Users 2 and 3 cannot.
• You can send text messages about any aspect of the exercise at the
beginning of each round. However, there are two restrictions:
1) You are NOT allowed to promise the other players side-
payments or threaten them with any consequence after the
experiment is finished.
2) You are NOT allowed to reveal your real identity.
• Note that chat conversation does NOT affect neither the Users’
nor the Provider's earnings.

3. Next, you and 3 other players will play the second set of rounds.