日時：2025年4月16日（水）13：30～15：00

会場：豊中キャンパスOSIPP棟6階　会議室

講師：Shyamal Chowdhury (University of Sydney)　

タイトル：Parental Paternalism and Patience

アブストラクト:Quantitative evidence on the extent of paternalism within families is scant. We provide a novel measure to study whether and how parents interfere paternalistically in their children's intertemporal decision-making. In an experiment with over 2,000 members from 610 families in Bangladesh, we find that more than half of all parents are willing to pay money to override their children's choices in order to mitigate the (correctly anticipated) level of children's present bias. The extent of parental paternalism is strongly related to parenting styles and we discuss how it interacts with the intergenerational transmission of patience.

日時：2025年4月24日（木）13：30～15：00

会場：豊中キャンパスOSIPP棟6階　会議室

講師：Pei Cheng Yu氏（UNSW）

タイトル：Optimal Retirement Policies with Private Annuities

アブストラクト：This paper examines the optimal design of retirement policies that rely on private insurance markets while accounting for financial frictions within these markets. We analyze the impact of uninsurable aggregate interest rate shocks in a life-cycle model where the government screens productivity, longevity, and altruism. We show that observing retirees' annuitization choices helps separate individual types. However, private annuity markets face supply-side inefficiencies due to interest rate risk. To improve market efficiency, the government can issue long-term bonds, supported by interest rate-contingent taxes. Therefore, full privatization can only be optimal without interest rate shocks; otherwise, Social Security remains necessary.

日時：2025年5月22日（木）13：30～15：00

会場：豊中キャンパスOSIPP棟6階　会議室

講師：伊神　満 氏（University of Toronto ）

タイトル："Welfare Gains from Product and Process Innovations: The Case of LCD Panels, 2001-2011"

アブストラクト：We used unusually detailed data on sales, costs, and investments from the global industry of liquid crystal display (LCD) panels to study the welfare consequences of various types of innovation. Product and process innovations account for 70.6% and 38.9% of total welfare, respectively, with substantial heterogeneity between market segments. The social return on technological investments is unambiguously positive, but the private returns for most firms are negligible because of competition. Simulations suggest the industry-wide incentive to innovate tends to increase with seven-to-six and six-to-five mergers, but the effect becomes mostly negative in subsequent consolidation. We conclude with antitrust policy implications.

 日時：2025年5月29日（木）13：30～15：00

 場所：豊中キャンパス　OSIPP棟6階　会議室 

 講師：国本　隆氏（Singapore Management University ）　　

 議題："Rationalizable Incentives: Interim Rationalizable Implementation of Correspondences"

アブストラクト：When the normative goals for a set of agents can be summarized in a set-valued rule and agents take actions that are rationalizable, a new theory of incentives emerges in which standard Bayesian incentive compatibility (BIC) is relaxed significantly. The paper studies the interim rationalizable implementation of social choice sets with a Cartesian product structure, a leading example thereof being ex-post efficiency. Setwise incentive compatibility (setwise IC), much weaker than BIC, is shown to be necessary for implementation. Setwise IC enforces incentives flexibly within the entire correspondence, instead of the pointwise enforcement entailed by BIC. Sufficient conditions, while based on the existence of SCFs in the correspondence that make truthful revelation a dominant strategy, are shown to be permissive to allow the implementation of ex-post efficiency in many settings where equilibrium implementation fails (e.g., bilateral trading, multidimensional signals). Furthermore, this success comes at little cost: all our mechanisms are well behaved, in the sense that best responses always exist.

日時：2025年6月5日（木）13：30～15：00

会場：豊中キャンパス法経研究棟1階　eコモンズ

講師：Juan Pantano氏（University of Arizona  ）

タイトル：Stochastic Compliance and Identification of Treatment Effects (joint with Hidehiko Ichimura)

アブストラクト：The exclusion restriction plays a key role in the identification of LATE (Imbens & Angrist (1994), Angrist, Imbens & Rubin (1996)). We discuss a particularly ubiquitous way in which the exclusion restriction would seem to be generically violated. We argue that this form of violation is not addressed in the many applications that rely on this influential framework. We characterize the bias that this particular violation gives rise to and, more constructively, discuss how to use the particular structure of the violation along with milder assumptions and additional data to restore identification. We provide sharper bounds by exploiting the specific structure of the exclusion restriction violation we uncover. Further, with an additional assumption which is plausible in many empirical settings, we restore point identification of LATE. We illustrate with examples and discuss why this violation is likely present in most existing empirical applications. We discuss how our arguments naturally extend to other IV settings where the LATE parameter is commonly invoked, such as randomized controlled trials with imperfect compliance and fuzzy regression discontinuity designs. Moving beyond LATE, we also consider how the same problems and solution ideas apply to identification of the MTE profile and more structural "Roy" models of treatment effects.