技术时代的不确定性与美国证券监管的未来

美国证监会缺乏相关的技术对策,它还不甚了解信息技术的发展趋势及其对美国证券市场的影响,也不清楚技术进步对证监会监管职能的作用及影响.因此,证监会在对全国证券市场进行监管时,无法制定有效的技术路线.     

The impact of carbon disclosure mandates on emissions and financial operating performance

Review of Accounting Studies - We examine the impact of a disclosure mandate for greenhouse gas emissions on firms’ subsequent emission levels and financial operating performance. For...     

Genetic distance,cultural differences,and the formation of regional trade agreements

Review of World Economics - Genetic distance between countries’ populations has been shown to proxy cross-country differences in cultures and preferences. In an unbalanced panel of 133...     

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Rezensionen

     

Two destabilizing strategies may be jointly stabilizing

The paper contributes to the literature on learning dynamics with heterogeneous agents, demonstrating that heterogeneity as such may be conducive to stability. The point is made in the framework of the cobweb model, where two different forecast procedures are considered. Either one destabilizes the price dynamics when it is uniformly adopted by all firms, or the price equilibrium becomes locally stable if firms are heterogenous and the two rules are suitably mixed within the population. It is also indicated that such a stabilizing composition is endogenously brought about by an adjustment process in which the population shares evolve under evolutionary pressure.     

Converse trading strategies,intrinsic noise and the stylized facts of financial markets

This paper proposes a simple asset pricing model with three groups of traders: chartists who believe in the persistence of bull and bear markets, fundamentalists who bet on a reduction of the observed mispricing, and investors who follow a buy-and-hold strategy. The innovative feature of the model concerns the frequency of trading: rather than remaining constant over time, each agent in a group is only assumed to become active with a certain probability over a given market period. Depending on the trading strategy, part of this elementary kind of intrinsic noise is additive and another part is multiplicative. Using bootstrap and Monte Carlo methods, it is demonstrated that this combination can contribute to explaining the stylized facts of the daily returns on financial markets, such as volatility clustering, fat tails, and the autocorrelation patterns.     

SOME OBSERVATIONS ON THE HIGH‐FREQUENCY VERSIONS OF A STANDARD NEW‐KEYNESIAN MODEL

In a small‐scale New‐Keynesian model with a hybrid Phillips curve and IS equation, the paper is concerned with an arbitrary frequency of the agents’ synchronized decision making. It investigates the validity of a fundamental methodological precept according to which no substantive prediction or explanation of a well‐defined macroeconomic period model should depend on the real time length of the period. While this principle is basically satisfied as the period goes to zero, the impulse – response functions of the high‐frequency versions can qualitatively as well as quantitatively be fairly dissimilar from their quarterly counterpart. The result proves to be robust under variations of the degree of price stickiness. The main conclusion is that DSGE modelling may be more sensitive to its choice of the agents’ decision interval.     

The Measurement of Prices of Production: An Alternative Approach

This paper analyzes the theoretical and methodological issues related to the empirical measurement of prices of production and wage-profit curves. A number of shortcomings of the standard approach are discussed, focusing in particular on the neglect of capital stock matrices and on the empirically objectionable assumption of uniform profit rates. An alternative approach for the empirical analysis of wage-profit curves and prices of production is proposed and its main properties are investigated using a new dataset on the German economy (1991–99). It is suggested that a Leontief-Bródy approach (augmented by profit rate differentials) is more appropriate for the analysis of wage-profit curves and prices of production than the purely theoretically oriented Sraffa-von Neumann framework.