TY - RPRT AU - He, Yinghua AU - Magnac, Thierry TI - A Pigouvian Approach to Congestion in Matching Markets PY - 2018/Nov/ PB - Institute of Labor Economics (IZA) CY - Bonn T2 - IZA Discussion Paper IS - 11967 UR - https://www.iza.org/publications/dp11967 AB - Recruiting agents, or "programs" costly screen “applicants” in matching processes, and congestion in a market increases with the number of applicants to be screened. To combat this externality that applicants impose on programs, application costs can be used as a Pigouvian tax. Higher costs reduce congestion by discouraging applicants from applying to certain programs; however, they may harm match quality. In a multiple-elicitation experiment conducted in a real-life matching market, we implement variants of the Gale-Shapley Deferred-Acceptance mechanism with different application costs. Our experimental and structural estimates show that a (low) application cost effectively reduces congestion without harming match quality. KW - Gale-Shapley Deferred Acceptance Mechanism KW - costly preference formation KW - screening KW - stable matching KW - congestion KW - matching market place ER -