
on Economic Design 
By:  Gharad Bryan; Jonathan de Quidt; Tom Wilkening; Nitin Yadav 
Abstract:  Small farms and fragmented plots are hallmarks of agriculture in lessdeveloped countries, and there is evidence of high returns to land consolidation and reallocation. Complementarities, holdout and asymmetric information mean that private trade will be slow to reallocate land, and imply that market design has the potential to contribute to the development process. Complexity concerns are, however, paramount. We present results from a framed field experiment with Kenyan farmers, comparing the performance of several continuoustime land exchanges. Farmers are able to achieve high degrees of efficiency, and to comprehend and gain from a relatively complicated package exchange. 
Keywords:  market design, field experiments, economic development, land trade 
JEL:  C93 O13 Q15 
Date:  2017 
URL:  http://d.repec.org/n?u=RePEc:ces:ceswps:_6557&r=des 
By:  Christoph March; Marco Sahm 
Abstract:  We investigate how individual risk preferences affect the likelihood of selecting the more able contestant within a twoplayer Tullock contest. Our theoretical model yields two main predictions: First, an increase in the risk aversion of a player worsens her odds unless she already has a sufficiently large advantage. Second, if the prize money is sufficiently large, a less able but less risk averse contestant can achieve an equal or even higher probability of winning than a more able but more risk averse opponent. In a laboratory experiment we confirm both, the nonmonotonic impact and the compensating effect of risk aversion on winning probabilities. Our results suggest a novel explanation for the gender gap and the optimality of limited monetary incentives in selection contests. 
Keywords:  selection contest, risk aversion, competitive balance, gender gap 
JEL:  C72 D72 J31 K41 M51 M52 
Date:  2017 
URL:  http://d.repec.org/n?u=RePEc:ces:ceswps:_6587&r=des 
By:  Christoph Laica; Arne Lauber; Marco Sahm 
Abstract:  We examine the fairness and intensity of sequential roundrobin tournaments with multiple prizes. With three symmetric players and two prizes, the tournament is completely fair if and only if the second prize is valued half of the first prize, regardless of whether matches are organized as Tullock contests or as allpay auctions. For second prizes different from half of the first prize, threeplayer tournaments with matches organized as Tullock contests are usually fairer than tournaments with matches organized as allpay auctions. However, unless the second prize is very small, they are less intense in the sense that players exert less exante expected aggregate effort per unit of prize money. Moreover, we specify how the relative size of the second prize influences the extent and the direction of discrimination as well as the intensity of threeplayer tournaments. Finally, we show that there is no prize structure for which sequential roundrobin tournaments with four symmetric players are completely fair in general. 
Keywords:  roundrobin tournament, multiple prizes, fairness, intensity, Tullock contest, allpay auction 
JEL:  C72 D72 
Date:  2017 
URL:  http://d.repec.org/n?u=RePEc:ces:ceswps:_6685&r=des 
By:  Sahm, Marco 
Abstract:  I examine sequential roundrobin tournaments with three and four symmetric players which are matched once with each other. If the matches are organized as Tullock contests (allpay auctions), the tournament is almost fair (highly discriminatory): Subject to the position of their matches in the sequence of the tournament, the differences in players’ ex ante winning probabilities and expected payoffs are small (large). Discrepancy results from a higher discriminating power of the allpay auction. 
JEL:  C72 D72 
Date:  2017 
URL:  http://d.repec.org/n?u=RePEc:zbw:vfsc17:168113&r=des 
By:  Sela, Aner 
Abstract:  We study an elimination tournament with four contestants, each of whom has either a high value of winning (a strong player) or a low value of winning (a weak player) and these values are commonknowledge. Each pairwise match is modelled as an allpay auction. The winners of the first stage (semifinal) compete in the second stage (final) for the first prize, while the losers of the first stage compete for the third prize. We examine whether or not the game for the third prize is profitable for the designer who wishes to maximize the total effort of the players. We demonstrate that if there are at least two strong players, there is always a seeding of the players such that the third place game is not profitable. On the other hand, if there are at least two weak players, then there is always a seeding of the players such that the third place game becomes profitable. 
Date:  2017–10 
URL:  http://d.repec.org/n?u=RePEc:cpr:ceprdp:12348&r=des 
By:  Gretschko, Vitali; Wambach, Achim 
Abstract:  We consider the problem of a principal who wishes to contract with a privately informed agent and is not able to commit to not renegotiating any outcome of any mechanism. We provide a general characterization of renegotiationproof outcomes. We apply the solution to a setting with a continuous type space, private values and nonlinear contracts. We find that the optimal renegotiationproof outcomes for the principal are pooling outcomes and satisfy a “nodistortionatthebottom” property. 
JEL:  C72 
Date:  2017 
URL:  http://d.repec.org/n?u=RePEc:zbw:vfsc17:168269&r=des 
By:  Puppe, Clemens 
Abstract:  It is proved that, among all restricted preference domains that guarantee consistency (i.e. transitivity) of pairwise majority voting, the singlepeaked domain is the only minimally rich and connected domain that contains two completely reversed strict preference orders.This result has a number of corollaries, among other things it implies that a singlecrossing (‘orderrestricted’) domain can be minimally rich only if it is a subdomain of a singlepeaked domain. 
JEL:  D71 C72 
Date:  2017 
URL:  http://d.repec.org/n?u=RePEc:zbw:vfsc17:168068&r=des 