ミクロ経済学ワークショップ 2020
Microeconomics Workshop
- ※ 2021年3月15日
- ※ 特に表記のない限りセミナー発表は英語で行われます(Unless otherwise mentioned, presentations are in ENGLISH)。
以下本年度終了分
日時 | June 4, 2020 (木 Thursday) 10:25-12:10 |
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場所 | 東京大学大学院経済学研究科 学術交流棟 (小島ホール)2階 小島コンファレンスルーム
in Kojima Conference Room 1 on the 2nd floor of the Economics Research Annex (Kojima Hall) [Map] |
報告 | Bruno Strulovici (Northwestern University)
Crime Aggregation, Deterrence, and Witness Credibility |
Abstract | We present a model for the equilibrium frequency of offenses and the informativeness of witness reports when potential offenders can commit multiple offenses and witnesses are subject to retaliation risk and idiosyncratic taste shocks. We compare several ways of handling multiple accusations discussed in legal scholarship. (i) When accusations are aggregated to determine the probability that the defendant committed at least one unspecified offense and conviction entails severe punishment, witness reports are arbitrarily uninformative and offenses are frequent in equilibrium. Offenders induce negative correlation in witnesses’ private information, which causes information aggregation to fail. (ii) When accusations are treated separately to adjudicate guilt and conviction entails severe punishment, witness reports are highly informative and offenses infrequent in equilibrium. |
Organizer | Akihiko Matsui |
日時 | June 9, 2020 (火 Tuesday) 10:25-12:10
※曜日に注意
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場所 | 東京大学大学院経済学研究科 学術交流棟 (小島ホール)1階 第1セミナー室
in Seminar Room 1 on the 1st floor of the Economics Research Annex (Kojima Hall) [Map] |
報告 | |
Abstract | |
共催 | |
Organizer | Sagiri Kitao |
日時 | June 12, 2020 (金 Friday)15:30 ~ 17:00 |
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場所 | 本セミナーはZoomを使ったオンラインでの開催(事前登録制)となります。 Presentation in Japanese 場所 本セミナーはZoomを使ったオンラインでの開催(事前登録制)となります。詳細は下記をご参照ください。 https://sites.google.com/site/tokyolaborwkshp/home |
報告 | 報告者1:川田恵介 ( Keisuke Kawata) (The University of Tokyo) 報告者2:大竹文雄(Fumio Ohtake) (Oska University) |
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Organizer | Ayako Kondo |
日時 | June 16, 2020 (木 Thursday) 10:25-12:10 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details.
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報告 | 松島斉 (Hitoshi Matsushima) (The University of Tokyo)
Mechanism Design with Blockchain Enforcement (joint with Shunya Noda) [paper] |
Abstract | We study the design of self-enforcing mechanisms that rely on neither a trustedthird party (e.g., court, trusted mechanism designer) nor a long-term relationship.Instead, we use a smart contract written on blockchains as a commitment device.We design thedigital court, a smart contract that identifies and punishes agents whoreneged on the agreement. The digital court substitutes the role of legal enforcementin the traditional mechanism design paradigm. We show that, any agreement thatis implementable with legal enforcement can also be implemented with enforcementby the digital court. To pursue a desirable design of the digital court, we study away to leverage truthful reports made by a small fraction of behavioral agents. Ourdigital court has a unique equilibrium as long as there is a positive fraction of behavioralagents, and it gives correct judgment in the equilibrium if honest agents are more likelyto exist than dishonest agents. The platform for smart contracts is already ready in2020; thus, self-enforcing mechanisms proposed in this paper can be used practically,even now. As our digital court can be used for implementing general agreements, itdoes not leak the detailed information about the agreement even if it is deployed on apublic blockchain (e.g., Ethereum) as a smart contract. |
Organizer | Taiji Furusawa |
日時 | June 23, 2020 (火 Tuersday) 10:25-12:10 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details.
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報告 | Toshihiko Mukoyama (Georgetown University)
TBA |
Abstract | Wen-Tai Hsu (Singapore Management University) Innovation, Firm Size Distribution, and Gains from Trade (joint with Yi-Fan Chen and Shin-Kun Peng) [paper] |
Organizer | Taiji Furusawa |
日時 | Applied Economics Workshop
June 30, 2020(火 Tuesday)8:30-11:00 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 | 8:30 am (Tokyo Time) AEW Working Paper Discussion 1) Nina Guyon (National University of Singapore) New Peers From The Ghetto: Trickle-Down Effects of Public Housing Demolitions On Receiving Schools
2) Yu Qin (National University of Singapore) Migration Restrictions and the Labor Market Outcomes of Migrants: Evidence from the 2014 Hukou Reform in China (joint with Lei An, Jing Wu and Wei You)
9:30- Keynote Seminar Sandra E. Black (Columbia University) Recent Evidence on Intergenerational Mobility: Health, Wealth, and More Chief Moderator: Jessica Pan (National University of Singapore) |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stacey Chen |
日時 | June 30, 2020 (火 Tuesday) 10:25-12:10 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 諸岡千裕 (Chihiro Morooka) (The University of Tokyo) A New Folk Theorem in OLG Games [paper] |
Organizer | Akihiko Matsui |
日時 | July 7, 2020(火 Tuesday) 10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Syngjoo Choi(Seoul National University) Large Scale Experiments on Networks: A New Platform with Applications[paper] |
Abstract | We present a new platform for large scale networks experiments in continuous time and conduct three experiments on it: groups range from 8 all the way to 100 subjects. These experiments involve pure linking games as well as games with linking and public goods provision.
The major finding is that subjects create sparse networks that are almost always highly efficient. In some cases networks have a very unequal distribution of connections and exhibit small average distances, while in others subjects create equal and dispesed large distance networks. In some cases highly connected nodes earn vastly more while in other cases they earn significantly less than their less connected cohort. Informational overload helps in explaining why highly connected nodes make excessive investments but earn less than the spokes. |
Organizer | Ryuichi Tanaka |
日時 | July 10, 2020(金 Friday)14:00 ~ 17:00 ※ 日時に注意 Presentation in Japanese |
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場所 | 本セミナーはZoomを使ったオンラインでの開催(事前登録制)となります。詳細は下記をご参照ください。 |
報告 | 報告者1:明日山陽子(Yoko Asuyama) (Waseda University) なぜ日本には「面白い仕事」が少ないのか? 報告者 2:湯川志保(Shiho Yukawa) (Teikyo University) 性別役割意識の固着化,子どもの性別は親の政策支持と性別役割意識にどのような影響を与えるか |
共催 | 主催:東京労働経済学研究会 |
Organizer | Ayako Kondo |
日時 | July 14, 2020(火 Tuesday) 10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Xiaojian Zhao (Monash University) Economics of Motivated Cognition and Emotion: Shame, Guilt and Self-Confidence (joint with Roberta Dessi and Junjie Ren) |
Abstract | The available evidence from anthropology, psychology and economics shows that sensitivity to the emotion of shame and guilt varies across cultures. So does the tendency to exhibit a different psychological incentive mechanism: overconfidence. Shame and guilt have been portrayed as motivational mechanisms to enforce cooperation. This paper investigates how reliance on guilt versus shame interacts with overconfidence. We find that overconfidence and guilt are typically complementary, whereas shame can be a substitute for overconfidence. The paper also studies the model's predictions using data on differences in self-confidence and in shame and guilt sensitivity across countries, as well as individual-level data on migrants.
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Organizer | Yasutora Watanabe |
日時 | July 21, 2020(火 Tuesday) 10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Hyelim Son (University of Seoul) The Long-Term Effects of Labor Market Entry in a Recession: Evidence from the Asian Financial Crisis [paper] |
Abstract | This study investigates the long-term effects of initial labor market conditions by comparing cohorts who graduated from college before, during, and after the 1997–1998 Asian financial crisis in South Korea. We measure the overall welfare effect by examining their labor market activities, family formation, and household finances. Using data from 20 waves of the Korean Labor and Income Panel Study, we find a substantial and persistent reduction in employment, earnings, marriage, fertility, and asset building among men who graduated during the recession. For women, limited job opportunities at graduation resulted in an increase in childbearing. We also find evidence that family provides a risk-sharing mechanism for recession graduates. Our results suggest that labor market entry in a large-scale recession has prolonged effects on a young worker's life course even after the penalties in the labor market have disappeared.
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Organizer | Ayako Kondo |
日時 | ※ 修士論文報告会 Master's Thesis Presentations ※ 2020年7月28日(火 Tuesday)10:00-13:00 2020年8月4日(火 Tuesday)10:00-12:00 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 7月28日
10:00-10:30 Ying Ye (Readers: 中林, 田中, 川田)
10:30-11:00 Yang Huang (Readers: 中林, 田中, 川田)
11:00-11:30 Yuchen He (Readers: 中林, 田中, 近藤)
11:30-12:00 Yiwen Fan (Readers: 川田, 近藤, 中林)
12:00-12:30 Lianqing Li (Readers: 高崎, 川口, 川田)
12:00-12:30 Yuanyuan Zhou (Readers: 近藤, 中林, 川口)
8月4日 10:00-10:30 Qianmao Zhu (Readers: 松井, 尾山, 神取)
10:30-11:00 Yining Song (Readers: 近藤, 川田, 田中)
11:00-11:30 Xinyu Wang (Readers: 近藤, 田中, 川田)
11:30-12:00 Xuancheng Peng (Readers: 佐々木, 大橋, 若森) |
日時 | Applied Economics Workshop
July 30, 2020(木 Thursday) |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 | 8:30 am (Tokyo Time) AEW Working Paper Discussion Keynote Seminar Simon Loertscher (University of Melbourne) Recent Evidence on Intergenerational Mobility: Health, Wealth, and More Moderator: Kohei Kawaguchi (HKUST) |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stacey Chen |
日時 | Applied Economics Workshop
September 24, 2020(木 Thursday) 16:00- |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 | 16:00- Keynote Seminar Dávid Krisztián Nagy (CREI) All aboard: The aggregate effects of port development (joint with Cesar Ducruet, Reka Juhasz, and Claudia Steinwender) Moderator: Kohei Kawaguchi (HKUST)
17:30- AEW Working Paper Discussion |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stacey Chen |
日時 | September 29, 2020(火 Tuesday) 10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 室岡健志 (Takeshi Murooka) (大阪大学) |
Abstract | We develop a model of fragile self-esteem —self-esteem that is vulnerable to objectively unjustigied swings— and study its implications for choices that depend on, or are aimed to protect, one's self-view. We assume that a person's self-esteem is determined by sampling from his store of ego-relevant memories in a fashion that in turn depends on his self-esteem. This feedback mechanism can create multiple "self-esteem personal equilibria," making self-esteem fragile. Self-esteem is especially likely to be fragile, as well as unrealistic in either the positive or the negative direction, if it is an important ingredient of overall utility. A person with fragile self-esteem who has a low self-view might respond to an increase in incentives by decreasing effort. An individual with a high self-view, in contrast, might distort their choices to avoid a collapse in self-esteem. We discuss the implications of our results for education, job search, workaholism, and aggression.
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Organizer | Taiji Furusawa |
日時 | October 6, 2020(火 Tuesday) 10:25-12:10 ※日程変更いたしました。
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 成田悠輔 (Takeshi Murooka) (Yale University) |
Abstract | Machine learning, market design, and other algorithms produce a growing portion of decisions and recommendations. Such algorithmic decisions are natural experiments (conditionally quasi-randomly assigned instruments) since the algorithms make decisions based only on observable input variables. We use this observation to characterize the sources of causal-effect identification for a class of stochastic and deterministic algorithms. Data from almost every algorithm is shown to identify some causal effect. This identification result translates into a treatment-effect estimator. We prove that our estimator is consistent and asymptotically normal for well-defined causal effects. The estimator is easily implemented even with high-dimensional data and complex algorithms. Our estimator also induces a high-dimensional regression discontinuity design as a key special case. We deploy our method at fashion e-commerce platform ZOZOTOWN and other Japanese companies.
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Organizer | Taiji Furusawa |
日時 | October 13, 2020(火 Tuesday) 10:25-12:10 ※日程変更いたしました。
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Eric Weese (University of Tokyo) |
Abstract | We consider a model in which the arrangement of political boundaries involves a tradeoff between efficiencies of scale and heterogeneity, and develop a maximum score estimation technique to determine the parameters of a central planner's payoff function given the way they partitioned a territory into jurisdictions. We apply this technique to historical data on a set of centralized boundary changes in Japan: walking distance appears to determine jurisdiction boundaries, rather than historical, religious, or economic differences. We assume that local villages shared these preference parameters emphasizing walking distance, and use binary integer programming to calculate core partitions for a decentralized coalition formation game based on this model. Core partitions exist with very high probability. In a counterfactual world in which there are no between-village income differences, these core partitions are extremely close to the partition that would be chosen by a utilitarian central planner. When actual cross-village income differences are used, however, sorting on income results in mergers that are both smaller and geographically bizarre. |
Organizer | Ryuichi Tanaka |
日時 | October 19, 2020(月 Monday)10:30-12:00
※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細はミクロ実証分析ワークショップページ上部の説明をご確認ください。⇒ http://www.cirje.e.u-tokyo.ac.jp/research/workshops/emf/emf.html This seminar is held online (registration is required). Please read the instruction at the top of Empirical Micro Research Seminar's page for details. ⇒ http://www.cirje.e.u-tokyo.ac.jp/research/workshops/emf/emf.html |
報告 | Kiichi Tokuoka (International Monetary Fund) |
Abstract | Using data on earthquakes that have affected Japan over the past 100 years and self-reported risk tolerance, this paper finds a positive impact of "life-long'' earthquake memory on risk tolerance. The results are robust with several alternative specifications. The paper also finds that earthquake memory is positively related to the share of risky financial assets in household financial assets. |
Organizer | Drew Griffen |
日時 | October 20, 2020(火 Thuesday)10:25-12:10
※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Kiichi Tokuoka (International Monetary Fund) |
Abstract | How childhood poverty influences future life opportunities is fundamental to understanding intergenerational mobility. We examine gender differences in the effect of deprivations experienced in childhood on years of schooling utilizing a unique longitudinal study of children in rural China that began when they were 9-12 years old and followed them into adulthood. The surveys included village and school questionnaires, enabling us to assess the relative importance of family versus community deprivations. Data on siblings allows us to compare how poverty affects boys and girls differently within the same family. We find that in contrast to well-known findings for the US, in rural China girls’ educational attainment is much more sensitive to poverty than boys. Both family and community deprivations play an important role in explaining this difference; while differences in educational investments by parents and differences in gender attitudes do not. The difference in gender sensitivity to poverty is mainly explained by the lower educational attainment of older sisters with younger brothers when children grow up in poverty. |
Organizer | Ayako Kondo |
日時 | October 22, 2020(木 Thursday)10:25-12:10
※日時に注意 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. http://www.cirje.e.u-tokyo.ac.jp/research/workshops/macro/macro.html |
報告 | The Race between Technological Progressand Female Advancement: Changes inGender and Skill Premia in OECD Countries (joint with Hiroya Taniguchi) [paper] |
Abstract | In recent decades, the male–female wage gap has fallen, while the skilled–unskilledwage gap has risen in advanced countries. The rate of decline in the gender wage gaphas tended to be greater for unskilled than skilled workers, while the rate of increase inthe skill wage gap has tended to be greater for male than female workers. To account forthese trends, we develop an aggregate production function extended to allow for gender-specific capital–skill complementarity, and estimate it using shift–share instruments andcross-country panel data from OECD countries. We confirm that information and com-munication technology (ICT) equipment is not only more complementary to skilled thanunskilled workers but also more complementary to female than male workers. Our resultsshow that changes in gender and skill premia are the outcome of the race between progressin ICT and advances in female educational attainment and employment. |
共催 | |
Organizer | Sagiri Kitao |
日時 | Applied Economics Workshop
October 27, 2020(火 Thuesday)9:30 - 12:00 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 | 16:00- Keynote Seminar Keynote Seminar 9:30- David Deming (Harvard University) Team Players: How Social Skills Improve Team Performance [paper] Moderator: Jie Gong (National University of Singapore)
17:30- AEW Working Paper Discussion |
Abstract | Most jobs require teamwork. Are some people good team players? In this paper we design and test a new method for identifying individual contributions to team production. We randomly assign people to multiple teams and predict team performance based on previously assessed individualskills. Some people consistently cause their team to exceed its predicted performance. We call these individuals “team players”. Team players score significantly higher on a well-established measure of social intelligence, but do not differ across a variety of other dimensions, including IQ, personality, education and gender. Social skills – defined as a single latent factor that combines social intelligence scores with the team player effect – improve team performance about as much as IQ. We find suggestive evidence that team players increase effort among teammates. |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stacey Chen |
日時 | October 30, 2020(金 Friday)9:00-10:30
※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細はミクロ実証分析ワークショップページ上部の説明をご確認ください。⇒ http://www.cirje.e.u-tokyo.ac.jp/research/workshops/emf/emf.html This seminar is held online (registration is required). Please read the instruction at the top of Empirical Micro Research Seminar's page for details. ⇒ http://www.cirje.e.u-tokyo.ac.jp/research/workshops/emf/emf.html |
報告 | Daniel Hamermesh (Barnard College) |
Abstract | By age 77 a plurality of American women are widows. Comparing older (ages 70+) married women to widows in the American Time Use Survey 2003-18 and linking the data to the Current Population Survey allow inferring the short- and longer-term effects of an arguably exogenous shock?husband's death?and measuring the paths of adjustment to it. Widows differ from otherwise similar married women, and especially from married women with working husbands, by cutting back on home production, especially food preparation and housework, mostly by engaging in less of it each day, not doing it less frequently. British, French, Italian, German and Dutch widows behave similarly. Widows are alone during most of the time they had spent with their spouses, with only a small increase in time with friends and relatives (except shortly after becoming widowed). They feel less time pressure than married women but are less satisfied with their lives. Following European women before and after a husband's death shows the exact same changes in their feelings of time pressure and life satisfaction. Most of the adjustment of time use in response to widowhood occurs within one year of the husband's death; but reduced life satisfaction and feelings of depression persist much longer. |
共催 | |
Organizer | Daiji Kawaguchi |
日時 | November 6, 2020(金 Friday)13:00-14:45
※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Utku Unver (Boston College) |
Abstract | In most countries, public schools at disadvantaged districts have relatively fewer experienced teachers than those at more privileged districts. As teacher experience is an important indicator of good educa- tion outcomes, this presents itself as an important shortcoming of public education. Moreover, many of such countries use centralized matching mechanisms for assigning new teachers to their first jobs at schools and reassigning tenured teachers who would like to move. We address the unfair teacher distri- bution problem through a market design approach by introducing two new centralized (re)assignment mechanisms. The defining property of these mechanisms is that the final allocation improves not only teachers' welfare with respect the status quo but also makes the schools better off by creating a more even teacher distribution. While both mechanisms are strategy-proof for teachers, one achieves two- sided Pareto efficiency and in particular teacher optimality and the other one achieves an appropriately defined stability property, targeted for countries that already use stability-based assignment schemes. We empirically estimate teacher preferences using data from the existing assignment system in France and test our proposals' performance using several empirical metrics. |
共催 | |
Organizer | Fuhito Kojima |
日時 | November 10, 2020(火 Thuesday)10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 石田潤一郎 (Junichiro Ishida) (Osaka University) |
Abstract | This paper provides a general analysis of signaling under double-crossing preferences with a continuum of types. There are natural economic environments where indifference curves of two types cross twice, so that the celebrated single-crossing property fails to hold. Equilibrium exhibits a particular form of pooling: there is a threshold type below which types choose actions that are fully revealing and above which they choose actions that are clustered in possibly non-monotonic ways, with a gap separating these two sets of types. We also provide an algorithm to establish equilibrium existence by construction under mild conditions. |
Organizer | Ryuichi Tanaka |
日時 | Applied Economics Workshop
November 17, 2020(火 Thuesday)9:30 - 12:00 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 | 16:00- Keynote Seminar Keynote Seminar 9:30- Joel Waldfogel (University of Minnesota) Digitization and Pre-Purchase Information: The Causal and Welfare Impacts of Reviews and Crowd Ratings [paper] Moderator: Tiffany Tsai (National University of Singapore)
17:30- AEW Working Paper Discussion |
Abstract | Digitization has led to product proliferation, straining traditional institutions for product discovery; but digitization has also spawned crowd-based rating systems. We compare the relative impacts of professional critics and crowd-based Amazon star ratings on consumer welfare in book publishing. We assemble data on daily Amazon sales ranks, star ratings, and prices for thousands of books in 2018, along with information on their professional reviews in several major outlets. Using various fixed effects and discontinuity-based empirical strategies, we estimate that a New York Times review raises estimated sales by 78 percent during the first five days following a review; and the elasticity of sales with respect to an Amazon star is about 0.75. We use these causal estimates to calibrate structural models of demand for measuring the welfare impact of pre-purchase information in a way that respects the distinction between ex ante and ex post utility. The aggregate effect of star ratings on consumer surplus is roughly 15 times the effect of traditional review outlets. Crowd-based information now accounts for the vast majority of pre-purchase information, but the absolute effects of professional reviews have not declined over time. |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stacey Chen |
日時 | December 1, 2020(火 Thuesday)10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 今井晋(Susumu Imai) (Hokkaido University) |
Abstract | We propose a new methodology for estimating demand and cost functions of dierentiated products models when demand and cost data are available. The method deals with the endogeneity of prices to demand shocks and the endogeneity of outputs to cost shocks without any instruments by using cost data. We establish identication, consistency and asymptotic normality of our two-step Sieve Nonlinear Least Squares (SNLLS) estimator for the logit and BLP demand function specications. Using Monte-Carlo experiments, we show that our method works well in contexts where commonly used instruments are correlated with demand and cost shocks and thus biased. We also apply our method to the estimation of deposit demand in the US banking industry. |
Organizer | Ryuichi Tanaka |
日時 | Decmber 4, 2020(金 Friday)13:00-14:45
※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Tayfun Sonmez (Boston College) |
Abstract | COVID-19 has revealed several limitations of existing mechanisms for rationing scarce medical resources under emergency scenarios. Many argue that they abandon various ethical values such as equity by discriminating against disadvantaged communities. Illustrating that these limitations are aggravated by a restrictive choice of mechanism, we formulate pandemic rationing of medical resources as a new application of market design and propose a reserve system as a resolution. We develop a general theory of reserve design, introduce new concepts such as cutoff equilibria and smart reserves, extend previously-known ones such as sequential reserve matching, and relate these concepts to current debates. |
共催 | |
Organizer | Fuhito Kojima |
日時 | Applied Economics Workshop
December 8, 2020(火 Thuesday)9:30 - 12:00 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 | 16:00- Keynote Seminar Keynote Seminar 9:30- Martha Bailey (University of Michigan) Prep School for Poor Kids': The Long-Run Impact of Head Start on Human Capital and Productivity [paper] Moderator: Jessica Pan (National University of Singapore) Moderator: Tiffany Tsai (National University of Singapore)
17:30- AEW Working Paper Discussion |
Abstract | This paper evaluates the long-run effects of Head Start using large-scale, restricted 2000-2013 Census-ACS data linked to date and place of birth in the SSA’s Numident file. Using the county-level rollout of Head Start between 1965 and 1980 and state age-eligibility cutoffs for school entry, we find that participation in Head Start is associated with increases in adult human capital and economic self-sufficiency, including a 0.29-year increase in schooling, a 2.1-percent increase in high-school completion, an 8.7-percent increase in college enrollment, and a 19-percent increase in college completion. These estimates imply sizable, long-term returns to investing in large-scale preschool programs. |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stacey Chen |
日時 | Decmber 17, 2020(金 Friday)1) 9:00-10:30, 2) 13:00-14:30
※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 1) 9:00-10:30 今村謙三 (Kenzo Imamura) (Boston College)
2) 13:00-14:30 野田俊也 (Shunya Noda) (University of British Columbia) On Statistical Discrimination as a Failure of Social Learning: A Multi-Armed Bandit Approach (joint with Junpei Komiyama) [paper] |
Abstract | 1) A college or firm makes admissions or hiring decisions in which each candidate is characterized by priority ranking and type, which may depend on race, gender, or socioeconomic status. The admissions or hiring committee faces a trade-off between meritocracy and diversity: while a merit-first choice rule may admit candidates of the same type, a diversity-first choice rule may be unfair due to priority violations. To formalize this trade-off, we introduce a measure of meritocracy and a measure of diversity for choice rules. Then, we investigate how to resolve the tension between them. A choice rule that uses both reserves and quotas can be viewed as a compromise and is a generalization of the two extreme rules. The first result is comparative statics for this class of choice rules: we show that as parameters change and the choice rule becomes more meritorious, it also becomes less diverse. The second result is a characterization of the choice rule, which may help admissions or hiring committees to decide their policies.
2) We analyze statistical discrimination using a multi-armed bandit model where myopic firms face candidate workers arriving with heterogeneous observable characteristics. The association between the worker's skill and characteristics is unknown ex ante; thus, firms need to learn it. In such an environment, laissez-faire may result in a highly unfair and inefficient outcome---myopic firms are reluctant to hire minority workers because the lack of data about minority workers prevents accurate estimation of their performance. Consequently, minority groups could be perpetually underestimated---they are never hired, and therefore, data about them is never accumulated. We proved that this problem becomes more serious when the population ratio is imbalanced, as is the case in many extant discrimination problems. We consider two affirmative-action policies for solving this dilemma: One is a subsidy rule that is based on the popular upper confidence bound algorithm, and another is the Rooney Rule, which requires firms to interview at least one minority worker for each hiring opportunity. Our results indicate temporary affirmative actions are effective for statistical discrimination caused by data insufficiency. |
共催 | |
Organizer | Hitoshi Matsushima |
日時 | Decmber 22, 2020(火 Thuesday)10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Kamhon Kan (Academia Sinica) |
Abstract | Previous studies have obtained evidence on the effect of pollutants on acute health conditions (e.g., respiratory diseases) or mortality. The health effects of a drop in air pollution, the long-run effect, and the effect on some diseases (e.g., neurological disorders and cardiovascular diseases) are still less understood. This study focuses on the relationship between air pollutants onmortality and a range of health conditions. Moreover, we employ a quasi-experimental approach in a difference-in-differences framework for our analysis, using the closing of a power plant in Taiwan, which generated a sharp drop in the level of air pollutants, to identify the causal effect. Our analysis is based on population data from Taiwan's National Health Insurance claim records. We find that a drop in the air pollution level led to a improvement in health as indicated by a decrease in the total number of inpatient and outpatient visits, and visits due to dementia, lung diseases, heart diseases, and cardiovascular diseases. But the drop in air pollution levels did not lead to a drop in the mortality rate. |
Organizer | Ayako Kondo |
日時 | January 5, 2021(火 Thuesday)10:25-12:10
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Yi Lu (Tsinghua University) Valuing Domestic Transport Infrastructure: A View fromthe Route Choice of Exporters [paper] |
Abstract | A key input to quantitative evaluations of transport infrastructure projects is their impacton transport costs. This paper proposes a new method of estimating this impact relying onthe widely accessible customs data: by using the route choice of exporters. We combine ourmethod with a spatial equilibrium model to study the aggregate effects of the massive express-way construction in China between 1999 and 2010. We find that the construction brings 5.6%welfare gains, implying a net return to investment of 180%. Our analysis also produces someintermediate output of independent interest, for example, a time-varying IV for city-sector ex-port. |
共催 | |
Organizer | Taiji Furusawa |
日時 | January 25, 2021(月 Monday)9:30-11:00 ※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Kyle Chauvin (Harvard University) Unacknowledged Heterogeneity in Communication [paper] |
Abstract | Successful communication with natural language requires a sender and receiver to share the same understanding of the meaning of words, or linguisticconvention. What happens when people think they share the same convention, but in fact they do not? This paper shows how unacknowledged heterogeneity leads to systematic bias. I analyze a sender-receiver model in which both parties' conventions are drawn independently from a population satisfying a basic regularity condition. Relative to linguisticanchorstates that all conventions express identically – such as minimum, maximum, or midpoint states – the receiver on average exaggerates the sender's intended message. The model therefore predicts over-reaction to information across a range of communi-cation settings, such as economic forecasting, risk calibration, and doctor-patient relations. This occurs even when the parties have completely aligned interests. A sender and receiver with alignedinterests can mitigate miscommunication by rephrasing the form of the message sent, garbling thesender's information, introducing a mediator, or including a redundant second sender. When the two parties have conflicting interests, the receiver always suffers from unacknowledged heterogeneity, but a sender seeking to warp the receiver's action can benefit from the exaggeration effect. When multiple, similarly biased, agents aggregate information by communicating in sequence, allagents will mistakenly perceive the sequence converging to a point belief, when in fact the limiting distribution is noisily centered on an exaggeration of the true state. |
Organizer | Yasutora Watanabe |
日時 | January 28, 2021(木 Thursday)9:30-11:00 ※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | 横井 優 (Yu Yokoi) (国立情報学研究所(National Institute of Informatics)) A generalized matroid approach to matching problems with lower quotas |
Abstract |
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Organizer | Yasutora Watanabe |
日時 | February 2, 2021(火 Thuesday)10:25-12:10 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Jee-Hyeong Park (Seoul National University) Multi-brand Firms and Brand Acquisition: the Impact of Trade Liberalization on Reallocation of Brand Equity |
Abstract |
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共催 | |
Organizer | Taiji Furusawa |
日時 | February 17, 2021(水 Wednesday)9:30-11:00 ※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Akhil Vohra (Stanford University) |
Abstract |
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Organizer | Daisuke Oyama |
日時 | February 24, 2021(水 Wednesday)9:30-11:00 ※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Yichuan Lou (New York University) |
Abstract |
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Organizer | Daisuke Oyama |
日時 | February 25, 2021(木 Thursday)10:00-11:30 ※日時に注意 |
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場所 | Zoomを使ったオンラインでの開催(事前登録制)となります。詳細は本ウェブサイト上部の説明をご確認ください。 This seminar is held online (registration is required). Please read the instruction at the top of this website for details. |
報告 | Francisco Poggi (Northwestern University) The Timing of Complementary Innovations [paper] |
Abstract |
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Organizer | Yasutora Watanabe |
日時 | Applied Economics Workshop
February 25, 2021(木 Thursday)16:00-18:30 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. https://sites.google.com/view/economicseminar/home |
報告 |
Keynote Seminar 16:00- Yves Zenou (Monash University) Ethnic Mixing in Early Childhood Moderator: Joseph Tao-yi Wang (National Taiwan University) and Yasutora Watanabe (The University of Tokyo)
17:30- AEW Working Paper Discussion |
Abstract | |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Yasutora Watanabe |
日時 | Applied Economics Workshop
March 9, 2021(火 Thuesday)8:30-10:15 ※時間に注意 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. |
報告 |
Keynote Seminar 8:30- Amy Finkelstein (Massachusetts Institute of Technology (MIT)) Health Care and Health Economics Moderator: Albert Park (Hong Kong University of Science and Technology (HKUST))
10:15- AEW Working Paper Discussion |
Abstract | |
共催 | Hong Kong University of Science and Technology, National University of Singapore, and National Taiwan University |
Organizer | Stavey Chen |
日時 | Master's Thesis presentations
別途、正式な修士論文口述試験が行なわれるので、修士論文提出時に大学院係から配付される審査日程を参照のうえ、必ずご出席下さい。 Please note that you must attend an official oral examination in addition to this master thesis presentationfor details. Please see the schedule to be distributed by the Graduate Office when you submit your thesis. January 12, 2021 (木 Thursday) 10:00-17:00 January 18, 2021(月 Monday) 9:30-10:30 January 19, 2021 (火 Tuesday)10:00-17:00 January 21, 2021(木 Thursday)11:00-11:30 |
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場所 | Zoom Webinar を使ったオンラインでの開催(事前登録制)となります。参加をご希望の方は、下記ウェブサイトよりご登録下さい。 This seminar is held online using Zoom Webinar (registration is required). Please register at the following website for participation. |
January 12 | January 12 10:00-10:30 Thao Bach (Reader: Griffen、高崎、庄司)
10:30-11:00 XIE Ziyi (Readers: 田中、近藤、川田)
11:00-11:30 松倉 健(Readers: 川田、近藤、田中)
12:00-12:30 西田成佑 (Readers: 渡辺(安)、若森、飯塚)
12:30-13:00 LIUYuxin (Readers: 渡辺(安)、若森、飯塚)
13:00-13:30 LIU Hongzhi (Readers: 渡辺(安)、川口、山口)
13:30-14:00 清水玲 (Readers: 若森、渡辺(安)、石原)
14:00-14:30 SUN Na (Readers: 松村、加藤、石原)
14:30-15:00 姜虹竹(Jiang Hongzhu) (Readers: 松村、加藤、石原)
15:00-15:30 ZENG Shuai (Readers: 柳川、若森、石原)
15:30-16:00 ZHAO Zhao (Readers: 柳川、石原、若森)
16:00-16:30 CHEN Yixiong (Readers: 柳川、石原、若森)
16:30-17:00 LI Yancheng (Readers: 柳川、若森、石原) |
January 18 | January 18 9:30-10:00 深澤武志 (Reader: 大橋、下津、市村)
10:00-10:30 En Seki (Readers: 大橋、佐々木、若森) |
January 19 | Jnuaary 19 10:00-10:30 高見朗 (Reader: 飯塚、別所、田中)
10:30-11:00 宮脇弘実(Readers: 古澤、Kucheryavyy、川口)
11:00-11:30 日下翔貴 (Readers: 古澤、Kucheryavyy、青木)
12:30-13:00 坪田大河(Readers: 川口、下津、山口)
13:00-13:30 趙 子荻 (Readers: 川口、Griffen、山口)
13:30-14:00 Angus Watson(Readers: Griffen、川口、Weese)
14:00-14:30 則友雄磨 (Yuma Noritomo) (Readers: 高崎、澤田、Weese)
14:30-15:00 佐藤広人 (Readers: 神取、尾山、松島)
15:00-15:30 Qiusheng Peng (Readers: 松井、尾山、神取)
15:30-16:00 小林雅典 (Readers: 尾山、松井、神取)
16:30-17:00 WU Kaixuan(Readers: 中林、近藤、田中)
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January 21 | Januaary 21 11:00-11:30 Quentin Batista (Readers: 尾山、楡井、松井)
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