RT Journal Article SR Electronic T1 Quality information and market segmentation in auctions for reducing nonpoint source pollution JF Land Economics JO Land Econ FD University of Wisconsin Press SP le.102.4.060225-0044R1 DO 10.3368/le.102.4.060225-0044R1 A1 Ito, Nobuyuki YR 2026 UL http://le.uwpress.org/content/early/2026/04/06/le.102.4.060225-0044R1.abstract AB Auctions have the potential to improve the cost-effectiveness of nonpoint source pollution abatement to which applying the polluter pays principle is difficult. Laboratory experiments have shown that revealing the environmental impacts of reducing polluting inputs to nonpoint sources (potential sellers) leads to the deterioration of auction performance. The auction mechanism that simultaneously achieves cost-effectiveness and transparency for reducing nonpoint source pollution remains unclear. Through a laboratory experiment, I find that although the disclosure of information on environmental impacts deteriorates auction performance, contrary to theoretical predictions, market segmentation improves performance and cancels out these impacts.