Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/316908 
Year of Publication: 
2025
Series/Report no.: 
CESifo Working Paper No. 11794
Publisher: 
CESifo GmbH, Munich
Abstract: 
Casting mechanism design with evidence in the framework of Myerson (1982) implies that his generalized revelation principle directly applies, and we thus obtain standard notions of incentive compatible direct mechanisms. Their specific nature depends, however, on whether the presentation of evidence is controllable contractually. For deterministic implementation, we show that, in general, such control has value. We identify two independent conditions under which this value vanishes, one on evidence (WET) and another on preferences (TIWO). Allowing for fully stochastic mechanisms, we also characterize the (limited) extent to which the common assumption of evidentiary normality (NOR) negates any value of randomization. When NOR holds together with WET or TIWO, neither control nor randomization has any value. Many mechanism design settings satisfy these conditions naturally, implying that they are highly tractable.
Subjects: 
mechanism design
revelation principle
evidence
verifiable iInformation
value of control
value of randomization.
JEL: 
D82
Document Type: 
Working Paper
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