Conferences at Department of Economics, University of Toronto, Canadian Economic Theory Conference 2022

Font Size:  Small  Medium  Large

The Limits of Ex Post Implementation without Transfers

Tangren Feng*, Axel Niemeyer, Qinggong Wu

Last modified: 2022-04-17


We study ex post implementation in collective decision problems where monetary transfers cannot be used. We find that deterministic ex post implementation is impossible if the underlying environment is neither almost an environment with private values nor almost one with common values. Thus, de- sirable properties of ex post implementation such as informational robustness become difficult to achieve when preference interdependence and preference heterogeneity are both present in the environment.

Full Text: PDF