Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This study develops theory and uses a door-to-door fund-raising field experiment to explore the economics of charity. We approached nearly 5000 households, randomly divided into four experimental treatments, to shed light on key issues on the demand side of charitable fund-raising. Empirical results are in line with our theory: in gross terms, the lotteries raised more money than the voluntary contributions treatments. Interestingly, in terms of both maximizing current contributions and inducing participation, we find that a one-standard deviation increase in female solicitor physical attractiveness is similar to that ofthe lottery incentive.