I analyze equilibria in an infinite-horizon model of elections with a twoperiod term limit in the presence of adverse selection and moral hazard. The focus is on responsiveness of policy choices of first-term politicians. In equilibrium, office holders’ policy choices are ordered by type; politicians exert positive effort in the first term of office; and as politicians become highly office moti...

BACKGROUND Anthropological studies based on highly polymorphic HLA genes provide useful information for bone marrow donor registry, forensic medicine, disease association studies, as well as designing peptide vaccines against tumors, and infectious or autoimmune diseases. OBJECTIVE This study was designed to investigate the genetic relationship of Iranian Arabs and Jews using HLA-class II gen...

Politicians often use Twitter to express their beliefs, stances on current political issues, and reactions concerning national and international events. Since politicians are scrutinized for what they choose or neglect to say, they craft their statements carefully. Thus despite the limited length of tweets, their content is highly indicative of a politician’s stances. We present a weakly superv...

We show that the full version of the so-called ‘rural hospital theorem’ generalizes to many-to-many matching problems where agents on both sides of the problem have substitutable and weakly separable preferences. We also show that when agents’ preferences satisfy substitutability, the domain of weakly separable pref-

In this note, I extend the work of Echenique (forthcoming) to show that a model of many-to-many matching with contracts may be embedded into a model of many-tomany matching with wage bargaining whenever (1) all agents’ preferences are substitutable and (2) the matching with contracts model is unitary, in the sense that every contractual relationship between a given firm–worker pair is specified...

Local political authority (formal or informal) over natural resources may create rents for politicians. The political decision to use or allocate resources involves balancing private rents with reelection prospects. I examine the case of deforestation in Brazil and a presidential decree granting the federal government the authority to punish counties that failed to limit total deforestation wit...

Social media play an increasingly important role in political communication. Various studies investigated how individuals adopt social media for political discussion, to share their views about politics and policy, or to mobilize and protest against social issues. Yet, little attention has been devoted to the main actors of political discussions: the politicians. In this paper, we explore the t...

Many political failure arguments implicitly assume that voters are irrational. (Wittman 1995, 1989; Coate and Morris 1995) This paper argues that this assumption is both theoretically and empirically plausible: In politics, rationality, like information, is a collective good that individuals have little incentive to supply. In consequence, voters are frequently not only rationally ignorant but ...

A well functioning bureaucracy can promote prosperity, as advocated by Max Weber. But when bureaucracy gets jammed, it causes stagnation, as described by Franz Kafka. We propose a dynamic theory of the interaction between the production of laws and the efficiency of bureaucracy. When bureaucracy is inefficient the effects of politicians legislative acts are hard to assess. Therefore, incompeten...