1,720,984 research outputs found
Assessing the Extent of Democratic Failures: A 99%-Condorcet 's Jury Theorem
Full text linkThe paper quantifies the amount of information aggregated by large elections under qualified majority rules. It shows show that, even when the Condorcet Jury Theorem does not hold, there still can be meaningful information aggregation. In particular, we study the case of information aggregation under rational ignorance and with poorly informed voters
Reliability and Responsibility: a Theory of Endogenous Commitment
Full text linkA common assumption in Political Science literature is policy commitment: candidates maintain their electoral promises. We study its validity and we prove that is an costless electoral is an effective way of transmitting information to voters. We investigate the responsiveness of policies to electoral promises depending on politicians' motivations. The results are robust to relevant equilibrium refinements
Take-it-or-leave-it contracts in many-to-many matching markets
No full textWe study a class of sequential non-revelation mechanisms in which hospitals make simultaneous take-it-or-leave-it offers to doctors. We prove that all pure strategy subgame perfect Nash equilibrium outcomes are stable, but the inclusion of contracts shrinks the set of equilibrium outcomes. Our analysis reveals the existence of an advantage in setting the terms of the relationship that is absent from the model without contracts. The mechanisms of this class are outcome equivalent and implement the set of stable allocations in subgame perfect Nash equilibrium when competitive rivalry is present. The equilibrium outcomes form a lattice when preferences are substitutable
Incentives and implementation in allocation problems with externalities
No full textWe study the implementation of social choice rules in environments with externalities. We prove the impossibility of implementing efficient and α-individually rational rules in dominant strategies. We prove that the α-core is implementable in Nash equilibrium under mild restrictions and discuss the maximality and the minimality of our results. We extend our analysis to weakly efficient rules
A Spatial Model of Voting with Endogenous Proposals: Theory and Evidence from the Chilean Senate
Full text linkProposers strategically formulate legislative bills before voting takes place. However, spatial voting models that estimate legislator's ideological preferences do not explicitly consider this fact. In our model, proposers determine the ideology and valence of legislative bills to maximize their objective functions. Approaching to the median legislator ideology and increasing costly valence increases the passing probability, but usually decreases the proposer's payoff. Using quantile utility proposer preferences, the model becomes tractable and estimable. In this way, we deal with the bill sample selection problem to estimate legislator's preferences and also, the ideology of proposers, the proposed valence change, and the ideological stance of the status quo in a common scale. Using Chilean Senate 2009-2011 roll call data, our results suggests that (1) political party affiliation significantly affects Senators' ideology, (2) popular, young and male Senators are more extremist, and (3) proposers during Bachelet and Piñera's terms have similar ideologies
Strategic priority-based course allocation
No full textWe introduce the conditional acceptance mechanism for solving the course allocation problem under priorities. This mechanism implements the set of stable allocations in both Nash equilibrium and undominated Nash equilibrium when preferences and priorities are substitutable. We model a post-allocation adjustment mechanism using a repeated version of the conditional acceptance mechanism that mitigates the inefficiencies caused by deviating from equilibrium. Both mechanisms are straightforward to implement, simplify the elicitation of students’ preferences, and share features with currently employed course allocation mechanisms
Two-sided strategy-proofness in many-to-many matching markets
Full text linkWe study the existence of group strategy-proof stable rules in many-to-many matching markets under responsiveness of agents’ preferences. We show that when firms have acyclical preferences over workers the set of stable matchings is a singleton, and the worker-optimal stable mechanism is a stable and group strategy-proo frule for firms and workers. Furthermore, acyclicity is the minimal condition guaranteeing the existence of stable and strategy-proof mechanisms in many-to-many matching markets
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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