In a Nature article from 12 October 2015, named 'Price carbon — I will if you will', MacKay, Cramton, Ockenfels, and Soft argue that common commitments in a public goods game changes the Nash Equlibrium from free-riding, i.e. contributing nothing to the public good, to full contribution (cooperation).
They interpret this as a theoretical solution to climate change negotiations.
I wonder if there is an experimental investigation of this theoretical prediciton and would be happy if anyone could point me towards a paper that deals with this.
Thanks in advance.