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151.
In this paper, we suggest how to handle the issue of the heteroskedasticity of measurement errors when specifying dynamic models for the conditional expectation of realized variance. We show that either adding a GARCH correction within an asymmetric extension of the HAR  class (AHAR-GARCH), or working within the class of asymmetric multiplicative error models (AMEM) greatly reduces the need for quarticity/quadratic terms to capture attenuation bias. This feature in AMEM can be strengthened by considering regime specific dynamics. Model Confidence Sets confirm this robustness both in- and out-of-sample for a panel of 28 big caps and the S&P500 index.  相似文献   
152.
In this paper we introduce a nonparametric estimation method for a large Vector Autoregression (VAR) with time‐varying parameters. The estimators and their asymptotic distributions are available in closed form. This makes the method computationally efficient and capable of handling information sets as large as those typically handled by factor models and Factor Augmented VARs. When applied to the problem of forecasting key macroeconomic variables, the method outperforms constant parameter benchmarks and compares well with large (parametric) Bayesian VARs with time‐varying parameters. The tool can also be used for structural analysis. As an example, we study the time‐varying effects of oil price shocks on sectoral U.S. industrial output. According to our results, the increased role of global demand in shaping oil price fluctuations largely explains the diminished recessionary effects of global energy price increases.  相似文献   
153.
This article reports the development and initial validation of a multidimensional measure of employability based on the theoretical model of Lo Presti and Pluviano (2016). Four different studies were designed and implemented. Study 1 was a qualitative study that involved a group of 15 labour market experts and aimed at developing the items pool. In Study 2, an exploratory factor analysis of 526 employees was carried out to examine the structure of the employability measure as previously obtained. Study 3 aimed at verifying the employability measure that had emerged from Study 2 through confirmatory factor analysis of 699 employees, resulting in a 28‐item shortened version encompassing the original four employability dimensions. Finally, in Study 4, concurrent and predictive validity of the definitive version of the employability measure were tested on a sample of 712 employees. Implications for vocational guidance and human resource management, as well as future employability research, are discussed.  相似文献   
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Before the behavioural turn, the economic account of consumer policy concerns was too optimistic and reductive. After the turn, we, the consumers, are more likely to need from an economic perspective a more intrusive consumer policy. This is the dismality thesis defended in this article. The dismality thesis is a theoretical, comparative, and argumentative thesis, albeit normatively incomplete. It follows from two premises. First, pre-behavioural economics elaborated a restricted theory of consumer harm in unregulated markets (“consumer harm premise”) and, second, it overstated the effectiveness of information disclosure as a means of consumer policy (“institutional premise”). The dismality thesis is further supported by a comparison of the discussion of attributes control in the pre- and post-behavioural turn literature and by commenting on the main source of controversy about attributes control in the post-turn literature, the so-called “artificial truncation” of behavioural analysis.  相似文献   
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In a market where sellers are heterogeneous with respect to the quality of their good and are more informed than buyers, high quality sellers' chances to trade might depend on their ability to inform buyers about the quality of the goods they offer. We study how the strength of competition among sellers affects the ability of sellers of high quality goods to achieve communication by means of appropriate pricing decisions in the context of a market populated by a large number of strategic price-setting sellers and a large number of buyers. When competition among sellers is weak high quality sellers are able to use prices as a signaling device and this enables them to trade. By contrast, strong competition among sellers inhibits the role of prices as signals of high quality, and high quality sellers are driven out of the market.  相似文献   
159.
Using DATASTREAM and LexisNexis databases, we examine the experience from 1995 to 2005 for eight European countries and 21 sectors, and compute the frequency of merger transactions at sectoral level, controlling for the roles of country variables and focusing on distinct technological patterns of innovation. We found that, even in market‐based countries, where transfer of control is a frequent phenomenon, mergers are less frequent in those sectors where innovation follows cumulative processes and where takeovers represent a ‘breach of knowledge.’ This study provides empirical support to the fruitful line of research of varieties of capitalism (Hall and Soskice 2001 Hall, P. A. and Soskice, D., eds. 2001. Varieties of Capitalism, Oxford: Oxford University Press. [Crossref] [Google Scholar]) and shows that sectoral differences in M&A (mergers and acquisitions) may be seen in their complementarities with differences by country and their institutional frameworks. Results confirm that acquisitions may occur even in those economies where block‐holders are present, but where the good quality of institutions leaves no space for defence against takeovers. It also highlights the significant role played by takeover regulation, and suggests that the recent reforms in European harmonization should be implemented, so that the obstacles impeding takeovers can be removed. However, policy‐makers should also try to identify for which economies and sectoral fields of specialization, merger activities produce more beneficial effects and which turn out to be detrimental.  相似文献   
160.
Can public income insurance through progressive income taxation improve the allocation of risk in an economy where private risk sharing is incomplete? The answer depends crucially on the fundamental friction that limits private risk sharing in the first place. If risk sharing is limited because insurance markets are missing for model-exogenous reasons (as in Bewley (1986) [8]) publicly provided risk sharing improves on the allocation of risk. If instead private insurance markets exist but their use is limited by limited enforcement (as in Kehoe and Levine (1993) [23]) then the provision of public insurance interacts with equilibrium private insurance, as, by providing risk sharing, the government affects the value of exclusion from private insurance markets and thus the enforcement mechanism of these contracts. We characterize consumption allocations in an economy with limited enforcement and a continuum of agents facing plausible income risk and tax systems with various degrees of progressivity (public risk sharing). We provide conditions under which more publicly provided insurance actually reduces total insurance for agents (excess crowding-out), or under which more public insurance increases total insurance (partial crowding-out).  相似文献   
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