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湾商商论系列Seminar第二十八期/二十九期

第二十八期:

题目:Optimal Discrimination-free Auction

主讲人: 陈博

时间: 2023年12月25日14:00-15:30

地点:北京师范大学湾区国际商学院励耘楼B312

摘要:This paper introduces a second-price auction with a flexible reserve price, where the reserve price for the top bidder is not fixed but rather determined as a function of all losing bids. We show that when bidders are ex-ante heterogeneous, a second-price auction with an optimally chosen flexible reserve price not only generates strictly higher expected revenue than that of a second-price auction with any fixed reserve price but is also revenue-maximizing among all mechanisms that implement discrimination-free social choice functions. We also provide an axiomatic characterization of all second-price auctions with a flexible reserve price. Finally, we discuss real-life implementation.

本文介绍了一种具有灵活保留价的二价拍卖,其中对于最高竞标者的保留价不是固定的,而是作为所有落败竞标的函数确定。我们展示了当竞标者在事前异质的情况下,一个具有最优选择的灵活保留价的二价拍卖不仅产生的预期收入严格高于具有任何固定保留价的二价拍卖,而且在所有实施无歧视社会选择功能的机制中是最大化收入的。我们还提供了所有具有灵活保留价的二价拍卖的公理特征描述。最后,我们讨论了实际实施的问题。

陈博,深圳大学经济学院副教授,专注于对竞赛和拍卖中的机制设计和信息披露规则设计的基础理论研究,其成果相继发表于RAND Journal of Economics、Games and Economic Behavior、Journal of Economic Behavior & Organization、Journal of Mathematical Economics等国际一流学术期刊。

第二十九期:

题目:Is There a Prototype Leader Look? Evidence from A Paired-Photo Study in China

主讲人: 李桃

时间: 2023年12月27日星期三14:00-15:30

地点:北京师范大学湾区国际商学院励耘楼B312

摘要:Is the tendency to associate leadership effectiveness with a certain physical appearance universal, or is it a byproduct of mass electoral politics? This paper reports the first paired-photo study of leaders in a non-electoral setting. We first demonstrate that some basic findings of appearance-based leadership scholarship can be generalized to China. Chinese subjects can identify local politicians from their faces with above-chance accuracy. The faces of local political leaders are considered to be more competent, more trustworthy, and more electable than local business leaders. We also push further our understanding of the political effects of the physical appearance of public officials by showing that Chinese politicians seem to be able to command obedience when subjects have the option to individually or collectively oppose an unfavorable arrangement. In summary, our findings imply the existence of a "prototype leader look" predating the era of mass electoral politics.

领导力与外貌的相关性,是普遍存在的,还是选举政治的副产品?本文报告了在非选举环境中对领导者进行首次成对照片研究的结果。我们首先证明了一些基本的基于外貌的领导力学术研究结果可以推广到中国。中国受试者能够通过面部识别地方政治人物,准确率超过偶然。地方政治领导者的面孔被认为比地方商业领导者更有能力、更值得信赖,更容易通过选举。我们还通过对外貌对公共官员的治理效果的影响研究,发现当被试者可以选择个别或集体反对不利安排时,中国官员的照片似乎能够影响服从。总的来说,我们的研究结果倾向于支持在大规模选举政治时代之前已经存在一种“典型性领导外貌”。

李桃,男, 1999年北京大学政府系本科毕业,同时获得经济学双学位。2005年哈佛毕业,获统计学硕士和政治学(博弈论方向)博士学位。专业方向为公共政策分析与应用经济学。2005年起先后任职于上海财经大学经济学院助理教授(同时在公管学院兼职),北京大学汇丰商学院副教授,澳门大学政府系助理教授及副教授。有20篇学术文章发表于经济学与公共管理学领域的SSCI期刊,包括Journal of Public Economics, Economic Journal, Governance等一流学术期刊。