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Abstract
The problem of public good provision remains an active area of economic research and one of the
several areas that massively apply experimental methods in deriving analytical data. In such problems,
aggregated individual utility maximization behaviors would not necessarily coincide with a socially best
outcome. Thus, a possible solution shall reconcile this individual and social divergence, which encourages
us to search for a set of mechanisms that enable individuals to act according to their own best interests
while simultaneously maximize the total welfare of society. When providing public good through private
fund, people tend to rest on the contributions of others to cover some cost of the goods, which is often
referred a “free riding” problem. The efficient allocation of a public good happens when the sum of
marginal benefits across people (or the sum of the heights of people’s demand curves) equals the marginal
cost of public good provision. If individual each pays his/her marginal benefit, these individualized price
levels would constitute the necessary condition for Lindahl equilibrium. This Lindahl pricing system
would establish a Pareto optimal provision of the public good, however this system is rather unattainable
even in carefully controlled experimental settings (R. Mark Isaac and James M. Walker, 1988, R. Mark
Isaac et al., 1985): people quickly decrease their contribution in a voluntary environment as experience
grows. This paper compare several elements (including alternative rebate rules) that are often seen in the
public good game, in hope of finding a better way to raise individual contribution substantially compared
to traditional volunteer contribution.