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作者：Adida, Elodie; Dai, Tinglong
作者单位：University of California System; University of California Riverside; Johns Hopkins University; Johns Hopkins University
摘要：Diagnostic errors are common and can result in serious patient harm. Making the right diagnosis often requires significant diagnostic effort. Yet most physician payment schemes are procedure based and do not account for diagnostic effort or accuracy because of observability issues. In this paper, we develop a parsimonious model to examine the impact of a physician payment scheme on a physician's decisions to (1) exert diagnostic effort and (2) perform a confirmatory test. High effort provides ...
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作者：Xiong, Ruoxuan; Athey, Susan; Bayati, Mohsen; Imbens, Guido
作者单位：Emory University; Stanford University
摘要：In this paper, we study the design and analysis of experiments conducted on a set of units over multiple time periods in which the starting time of the treatment may vary by unit. The design problem involves selecting an initial treatment time for each unit in order to most precisely estimate both the instantaneous and cumulative effects of the treatment. We first consider nonadaptive experiments, in which all treatment assignment decisions are made prior to the start of the experiment. For th...
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作者：Chen, Qianwen; Choi, Jaewon
作者单位：Bank of Communications; University of Illinois System; University of Illinois Urbana-Champaign; Seoul National University (SNU)
摘要：Reaching for yield, which we define as an investor preference for higher-yield bonds at a given rating or for higher-rated bonds at given yields, is associated with inflated valuation and thus negatively predicts risk-adjusted returns. Controlling for ratings, alphas are lower for higher-yield bonds, whereas, controlling for yields, alphas are lower for safer-looking, higher-rated bonds. Future bond returns are particularly low when current interest rates are low and demand from yield-reaching...
