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Uzi SegalJoel Sobel 《Journal of Economic Theory》2002,106(1):126-150
This paper provides characterization theorems for preferences that can be represented by U(x1, …, xn)=min{xk}, U(x1, …, xn)=max{xk}, U(x1, …, xn)=∑ u(xk), or combinations of these functionals. The main assumption is partial separability, where changing a common component of two vectors does not reverse strict preferences, but may turn strict preferences into indifference. We discuss applications of our results to social choice. Journal of Economic Literature Classification Numbers: C0, D1, D6. 相似文献
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This paper uses a model similar to the Boyle-Vorst and Ritchken-Kuo arbitrage-free models for the valuation of options with transactions costs to determine the maximum price to be charged by the financial intermediary writing an option in a non-auction market. Earlier models are extended by recognizing that, in the presence of transactions costs, the price-taking intermediary devising a hedging portfolio faces a tradeoff: to choose a short trading interval with small hedging errors and high transactions costs, or a long trading interval with large hedging errors and low transactions costs. The model presented here also recognizes that when transactions costs induce less frequent portfolio adjustments, investors are faced with a multinomial distribution of asset returns rather than a binomial one. The price upper bound is determined by selecting the trading frequency that will equalize the marginal gain from decreasing hedging errors and the marginal cost of transactions. 相似文献
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Using a comprehensive sample of non-earnings 8-K filings from 2005 to 2013, we examine whether firms strategically report mandatory and voluntary news. In particular, we examine whether firms report negative news when investor attention is low and whether they bundle positive and negative news. Our findings support the notion that managers believe in the existence of investor inattention and strategically report negative news after trading hours. These results particularly apply to public firms, where equity market pressures provide stronger incentives to mitigate market reaction to news by exploiting investor inattention. Further analysis of the market reaction to strategic disclosure uncovers no evidence of investor inattention, consistent with market efficiency. We also observe that public firms are more likely to strategically disclose through news bundling and that the likelihood of this increases with the likelihood of strategic disclosure through timing. 相似文献
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Mark Segal 《Research in Accounting Regulation》2009,21(1):56-59
The paper examines certain recent developments concerning the extent to which tax accrual workpapers are subject to discovery by third parties. One context in which this issue has arisen has involved IRS efforts to attain such workpapers from accountants in the course of conducting a tax audit. Arguments raised in an effort to protect such workpapers from discovery have included: the attorney-client privilege, tax practitioner privilege and work product doctrine. Assertion of the work product doctrine has met with some success in recent cases, e.g., Roxworthy and Textron. Included among the topics discussed in this paper are the IRS definition of tax accrual workpapers, standards and rules concerning the application and waiver of the work product doctrine, and the recent United States District Court decision in the Textron case. 相似文献
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This article develops a sociological theory of ambivalence to explain several puzzling and contradictory ethical attitudes of business people: (1) a simultaneous disposition to comparatively more self-interested and more charitable behavior than many other occupational groups and (2) a moderate level of receptiveness to inculcation of moral principles through social channels such as higher education. We test the theory by comparing the way that business students rate the ethical acceptability of various ethically challenging scenarios with the way that criminal justice students rate these same scenarios. We also explore the malleability of ethical views by measuring differences between the responses of sophomores and seniors. The data generally support hypotheses based on a theory of ambivalence. At the same time, however, we also report on findings that suggest alternative explanations to ambivalence. 相似文献
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Whereas a range of business and management scholars have argued that business is in an ethical crisis, Nietzsche makes it possible to see that it is ethics itself that is in crisis, and that only as the crisis in ethics is dealt with can ethics in specific areas such as business be addressed. Nihilism is the name that Nietzsche gives to the crisis in ethics. The failure to fully appreciate nihilism and its pervasiveness as the root cause of the problem, as evident in the perpetual quest to obliterate nihilism through the creation of ethical frameworks and foundations, has plunged business and ethics scholarship in the field, ever deeper in the quagmire of nihilism. In response to nihilism, Nietzsche offers a re‐evaluation of all values. To re‐evaluate all values means to accept nihilism and see it as a basis for questioning taken for granted assumptions that have supported the notion of ethics or values in order to re‐imagine an ethics which is responsive to the crisis of nihilism. The paper thus proposes that rather than trying to invent new ethics or ethical foundations, or figuring out “how” to be ethical, we need to turn our attention on the “why to be” of ethics. 相似文献
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