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1.
Many developing countries use food-price subsidies or controls to improve nutrition. However, subsidizing goods on which households spend a high proportion of their budget can create large wealth effects. Consumers may then substitute towards foods with higher non-nutritional attributes (e.g., taste), but lower nutritional content per unit of currency, weakening or perhaps even reversing the subsidy's intended impact. We analyze data from a randomized program of large price subsidies for poor households in two provinces of China and find no evidence that the subsidies improved nutrition. In fact, it may have had a negative impact for some households. (JEL I38; O12; Q18).  相似文献   

2.
Abstract In this paper, we review the evidence about the purchase behaviour of consumers. We concentrate on the characteristics of the choice process, choice of the external information source and nature of the information obtained from these sources. The impact of important systematic differences among consumers and products on choice behaviour is also discussed.  相似文献   

3.
Having reviewed 1259 papers on cluster theory, we find that current cluster studies primarily discussed cluster phenomena from either a microlevel or mesolevel. We argue that studying relations among clusters would increase our understanding of clusters, and such a research topic is worth becoming a new research orientation for cluster theory.  相似文献   

4.
With growing demand for fresh water and uncertain supplies, there is an increasing concern about future water scarcity. Since most freshwater withdrawals are for agriculture, reliance on water embodied in imported food (trade in ‘virtual water’) is a possible strategy to provide food to water-stressed regions while conserving their scarce supply for other purposes. To evaluate this proposition, we extend a model of interregional trade by (1) defining endowments of water that cannot be exceeded, (2) allowing simultaneous operation of rainfed and irrigated agriculture, and (3) distinguishing sub-regional endowments within a larger economic region. An application to the Mexican economy compares region-specific water abundance with economic comparative advantage under alternative scenarios. We conclude that the water-rich regions of Mexico are relatively high-cost producers of food and that they do not pick up the slack even when the lowest-cost Mexican regions are constrained by binding water constraints.  相似文献   

5.
Over the last decade, a massive body of research has been devoted to uncovering human dishonesty. In the present paper, we review more than a hundred papers from this literature and provide a comprehensive overview by first listing the existing theoretical frameworks, and then covering the common empirical approaches, synthesizing the demographic and personal characteristics of those who cheat, identifying the behavioural mechanisms found that affect dishonesty and finally we finish by discussing how the empirical evidence fit theory. Overall, the review concludes that many people behave dishonestly, but also that it is a highly malleable behavior sensitive to elements such as decision contexts, behaviour of others, state of mind and depletion. The review can be used as an overview of the dishonesty literature or as a guide or work of reference for selected topics of interest.  相似文献   

6.
Researchers have various ways to measure liquidity but most of them come with both merits and demerits. This study provides a literature review of low-frequency liquidity measures with a primary focus on liquidity measurement as well as its implication on asset pricing. Based on the dimension it captures, a range of existing low-frequency measures are divided into four categories of liquidity proxies including transaction cost, volume, price impact, and multidimension-based measures. We review some well-established liquidity proxies, a new bid–ask spread estimator and price impact ratios proposed recently. Finally, we discuss how good low-frequency liquidity measures are at capturing standard liquidity benchmarks, which are constructed from high-frequency intraday data.  相似文献   

7.
The use and prevalence of JEL code categorization is wide in the field of economics, but what do JEL code classifications actually tell us? And are they used with consistency by academics in the field? Utilizing a data set of articles published in the American Economic Review from 1990 to 2008, we investigate whether there is heterogeneity in JEL codes assignments between authors and editors. We find that there is. A secondary goal of this paper is to survey overall thematic trends in JEL code usage over the past four and a half decades. One result is that JEL category M: Business Economics, in particular, appears to be thematically and spatially distinct from much of the rest of the published literature in the top general interest journals in the field.  相似文献   

8.
Abstract The management and monitoring of very large portfolios of financial assets are routine for many individuals and organizations. The two most widely used models of conditional covariances and correlations in the class of multivariate GARCH models are BEKK and dynamic conditional correlation (DCC). It is well known that BEKK suffers from the archetypal ‘curse of dimensionality’, whereas DCC does not. It is argued in this paper that this is a misleading interpretation of the suitability of the two models for use in practice. The primary purpose of this paper is to analyse the similarities and dissimilarities between BEKK and DCC, both with and without targeting, on the basis of the structural derivation of the models, the availability of analytical forms for the sufficient conditions for existence of moments, sufficient conditions for consistency and asymptotic normality of the appropriate estimators and computational tractability for ultra large numbers of financial assets. Based on theoretical considerations, the paper sheds light on how to discriminate between BEKK and DCC in practical applications.  相似文献   

9.
The purpose of this study is to examine how credit rating agencies’ decisions impact the stock market using a systematic and quantitative review of existing empirical studies. Specifically, we employ a meta‐regression analysis (MRA) to investigate the extent and nature of the effect of rating agencies’ decisions on the stock market. We survey 62 studies published between 1978 and 2015. Our first finding is that the cumulative average abnormal returns calculated from this empirical literature are affected by publication bias. After controlling for publication bias, the main findings of our meta‐analysis indicate that negative rating decisions cause statistically significant negative abnormal returns. This evidence suggests an informational effect. Our results also indicate that positive rating decisions do not have a significant effect. Finally, the MRA results reveal the importance of several factors related to primary study design, as well as to the nature of the data.  相似文献   

10.
Many economists have long held that market failures create a gap between social and private returns to research and development (R&D), thereby limiting private incentives to invest in R&D. However, this common belief that firms significantly underinvest in R&D is increasingly being challenged, leading the rationale behind public support for private R&D to be questioned. In this paper, we attempt to clarify the perspectives of two sources: the theoretical literature on endogenous growth, and its recent developments in integrating a geographical dimension, and the empirical literature that measures the social returns to R&D in relation to the private returns. Ultimately, we are able to clearly distinguish among different types of market failures and compare their relative impact on the gap between the private and social returns to R&D. Two main conclusions are reached. First, systematic firm underinvestment in R&D is not demonstrated. Second, even though instances of underinvestment do occur, they are mainly explained by surplus appropriability problems rather than by knowledge externalities. This suggests the need for a new policy mix that employs more demand‐oriented instruments and is more concentrated on identifying efficient allocations among activities rather than merely increasing global private R&D investment.  相似文献   

11.
This research sought to explore the effect of foreign countries on firms’ competitiveness, using Porter’s Diamond as the framework for the empirical test. The empirical evidence was based on data collected from a sample of Swedish engineering consulting firms. The findings demonstrate that the Swedish Diamond has stronger impact on the competitiveness of Swedish engineering consulting firms than do the Diamonds of the host countries in which these firms are active. The effect of host countries’ Diamond tend to increase as firms mature in their international activity and was found to have weak relation to the psychic distance between Sweden and the host countries.  相似文献   

12.
This research study provides some insights into methodological issues in modeling fertility and its proximate determinants. The aim is to examine the links between female schooling and fertility in the Ivory Coast. The article first presents a brief literature review on the effect of education on fertility, describes the data and choice of econometric models, and indicates in a reduced form model the estimates of the impact of education and other socioeconomic factors on age at cohabitation and duration of breast feeding. Data are obtained from the 1986 Cote d'Ivoire Living Standards Survey among women aged 16 years or older. A probit model is used to estimate the probability of a woman having given birth at least once. The Kaplan-Meier hazard rate (Meyer's method) is used to explain women's age at cohabitation as a function of her education, personal characteristics, and local factors such as wage rates an social service infrastructure. Duration of breast feeding is explained by household characteristics as well as cohabitation explanatory variables among a subsample of women with at least one birth. Findings from the age at cohabitation models indicate that results varied with choice of the hazard models. Controls for unobserved heterogeneity were important for estimating the effects of secondary education. Econometric techniques that captured the heaping in duration of breast feeding data did not improve the fit. Both breast feeding and education were endogenous to fertility. This means that women with more children tended to marry later and breast feed longer. Findings indicate that primary schooling had a weak impact on fertility and proximate determinants. Secondary schooling had a strong impact. Women with secondary schooling cohabited 4 years later and breast fed 8 months less than non-schooled women.  相似文献   

13.
The notion that economic crises induce the adoption of reform ranks among the most widely accepted concepts in the political economics literature. However, the underlying mechanism of the so‐called ‘crisis hypothesis’ has yet to be fully understood. This paper provides a comprehensive survey of the relevant empirical evidence to date, and scrutinizes the operationalization of the hypothesis’ key concepts: crisis, reform and the political mediation of reform during crises. We argue that the social perception of both crises and the subsequent cost of reform requires consideration of how these concepts are operationalized. As a product of the broader economic and institutional environment, social perceptions largely determine the manner in which the political mediation of reform during crises works. Present‐day methodological approaches fail to adequately reflect social perceptions and consequently compromise the determination of what constitutes both crisis and the cost of reform in the context of the crisis hypothesis. Most notably, the identification of crises by fixed thresholds constructed around macroeconomic variables impedes the interpretation of the hypothesis’ underlying mechanism. A fuller treatment of social perception within the operationalization of the hypothesis’ key concepts can enhance our understanding of how economic crises influence political dynamics in bringing about reform.  相似文献   

14.
Despite a longstanding debate, at both a theoretical and empirical level, research on the relationship between foreign direct investment (FDI) and intellectual property rights (IPRs) remains scant and ambiguous. As a result, the link between IPR strength and multinational enterprises’ (MNEs) propensity to invest is unproven and seemingly dependent on a number of factors. We critically review the theory and evidence of the influence of IPRs on FDI and MNEs’ investment location (country) decisions both to ‘take stock’ of existing knowledge of this relationship and, by identifying gaps in, and shortcomings of prior work, develop a fruitful research agenda. We find that existing empirical work on the IPR–FDI nexus, though skewed in favour of a positive relationship between IPR protection and FDI, is fragmented, inconclusive and unable to square the conflicting theoretical predictions on how the strength of IPRs can affect MNEs’ FDI location decisions. Several issues and challenges are highlighted to explain the difficulties of the collective body of past empirical work to provide a definite answer to the question of the impact of IPRs on FDI, from which valuable recommendations are proposed to guide future applied research.  相似文献   

15.
Diebold and Yilmaz (Economic Journal 2009; 119 ; 158–171) introduce the spillover index to measure linkages between international financial markets. As their index depends on the ordering of the variables in the underlying VAR model, they check robustness by computing the index for a small number of randomly chosen permutations, stating that it was impossible to explore the huge number of renumerations. Building on a new divide‐and‐conquer strategy, we provide an algorithm for swiftly calculating the spillover index's maximum and minimum over all renumerations. Using this new algorithm, we find that the true range of the spillover index can be up to three times as large as estimated by Diebold and Yilmaz. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   

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