Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper investigates whether a contest organizer should disclose private information about bidders’ abilities in a multi-prize all-pay auction. Bidders’ abilities are randomly distributed and observed by the contest organizer; the organizer decides whether to disclose this information publicly. We find that concealing the information elicits higher expected total effort, regardless of the distribution of abilities. In addition, we find that the rent-dissipation rate of the contest does not depend on the disclosure policy.