Halushka, Mariya2021-04-262021-04-262021http://hdl.handle.net/10393/42041https://doi.org/10.20381/ruor-26263I consider settings with rich private information – an agent's type may include private information other than just his preferences. In such settings, I identify a necessary condition for obviously strategy-proof implementation of social choice rules. I consider applications to strict preferences, matching and object allocation.en2104EObvious strategy-proofnessMechanism designWorking Paper