We revisit Sen's (1970) Paradox in its formulation for collective choice rules. It is well-known that under unrestricted domain, binary liberalism (BL) and the global (resp. binary) Weak Pareto principle (GWP/BWP) are incompatible with binary rejection consistency (resp. binariness). We first...

Austen-Smith and Banks (Journal of Economic Theory, 2000) study how money burning can expand the set of pure cheap talk equilibria of Crawford and Sobel (Econometrica, 1982). This note identifies an error in the main Theorem of Austen-Smith and Banks, and provides a variant that preserves some...

We study full-implementation in Nash equilibrium under complete information. We generalize the canonical model (Maskin, 1977) by allowing agents to send evidence or discriminatory signals. A leading case is where evidence is hard information that proves something about the state of the world. In...

This paper reconsiders the evidence on lying or deception presented in Gneezy (2005,American Economic Review). We argue that Gneezy?s data cannot reject the hip?esis that people are one of two kinds: either a person will never lie, or a person will lie whenever she prefers the outcome obtained...

We consider full implementation in complete-information environments when agents have an arbitrarily small preference for honesty. We offer a condition called separable punishment and show that when it holds and there are at least two agents, any social choice function can be implemented by a...

We study the characteristics of self-selected candidates in corrupt political systems. Individuals differ along two dimensions of unobservable character: public spirit (altruism) and honesty (disutility from selling out to special interests). Both aspects combine to determine an individual's...