Participants will be randomly assigned to a 2x2 study (Big vs. Small reward, Individual vs. Team), or a control group (no reward)

Thanks for playing!  Now invite your friends to play too!

Control:
The more people play this game, the more we'll be able to learn.  So we want your to help find more players. 

You can invite any students at your school.  Just give them the link you were given, and ask them to join the same Team you were a member of.  Have them enter your email address as their password, so we'll know who referred them.  Good luck!


Individual:
The more people play this game, the more we'll be able to learn.  So we want your to help find more players.  We'll give a special reward to whoever invites the most people: we'll make a $50/100 [Small/Big] donation to the charity of their choice!

You can invite any students at your school.  Just give them the link you were given, and ask them to join the same Team you were a member of.  Have them enter your email address as their password, so we'll know who referred them.  Good luck! 

Team:

The more people play this game, the more we'll be able to learn.  So we want you and your Teammates to help find more players.  We'll give a special reward to the Team that recruits the most players: we'll make a $50/100 [Small/Big] donation to the charity of their choice!

You can invite any students at your school.  Just give them the link you were given, and ask them to join your Team.  Have them enter your email address as their password, so we'll know who referred them.  Good luck!