@TechReport{iza:izadps:dp7307,
            	author={Bar-El, Ronen and Tobol, Yossef},
            	title={Contribution Games and the End-Game Effect: When Things Get Real – An Experimental Analysis},
            	year={2013},
	month={Mar},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={7307},
            	url={https://www.iza.org/publications/dp7307},
	abstract={We conduct a contribution game for a real public good and show that when the contributors value the real public good highly, they increase their contributions in each round. Thus, contrary to previous literature, free riding decreases over rounds and the end-game effect is reversed.},
	keywords={end-game effect;public goods experiment;free-riding},
            }