Revealed preferences for portfolio selection – does skewness matter?

In this article, we consider the portfolio selection problem as a Bayesian decision problem. We compare the traditional mean–variance and mean–variance–skewness efficient portfolios. We develop bi-level programming problem to investigate the market’s preference for risk by using observed (market) weights. Numerical experiments are conducted on a portfolio formed by the 30 stocks in the Dow Jones Industrial Average. Numerical results show that the market’s preferences are better explained when skewness is included.     

Cross-sectional earnings risk and occupational sorting: The role of risk attitudes

This paper investigates to what extent individuals' risk preferences are correlated with the cross-sectional earnings risk of their occupation. We exploit data from the German Socio-Economic Panel, which contains a direct survey question about willingness to take risks that has been shown to be a behaviorally valid measure of risk aversion. As a measure of earnings risk, we use the cross-sectional variation in earnings that is left unexplained by human capital variables in Mincerian wage regressions. Our evidence shows that individuals with low willingness to take risks are more likely to work in occupations with low earnings risk. This pattern is found regardless of the level of occupation categories, region, gender and labor market experience.     

The Brand Choice Model of Wine Consumers: A Multinomial Logit Model

The objective of this study is to determine factors influencing brand preferences of wine consumers in the Marmara region where viniculture and wine production is so important in Turkey. First, the consumers’ preferences survey has been conducted with 1022 persons in the region randomly selected and evaluated. Then, the informative factors influencing brand preferences collected in these surveys have been determined by the multinomial logit model. A lot of independent variables have been used in the multinomial logit model, but, because some independent variables were not found as significant according to Likelihood Ratio test, these variables are not included in the multinomial logit analysis. Six important factors influencing wine brand preferences have been determined. These factors are brand change causes of consumers, occupation of consumers, marital status of consumers, birthplace of consumers, income of consumers and gender of consumers. In addition, whether the wine brand preferences are independent, has been tested with Testing Independence of Irrelevant Alternatives of Hausman. According to this test, it has been found that the wine brand preferences are independent.     

Strategy-proof Location on a Network

We consider rules that choose a location on a graph (e.g. a road network) based on agents' single-peaked preferences. First, we characterize the class of strategy-proof, onto rules when the graph is a tree. Such a rule is based on a collection of generalized median voter rules (Moulin, 1980) satisfying a consistency condition. Second, we characterize such rules for graphs containing cycles. We show that while such a rule is not necessarily dictatorial, the existence of a cycle grants some agent an amount of decisive power, unlike the case of trees. Rules for this case can be described in terms of a subclass of such rules for trees. Journal of Economic Literature Classification Numbers: C72, D78.     

WHAT DO CITIZENS THINK ABOUT PUBLIC ENTERPRISES? SUBJECTIVE SURVEY DATA ON THE LEGITIMACY OF THE ECONOMIC ACTIVITIES OF THE GERMAN PUBLIC SECTOR

We analyse the legitimacy of public enterprises that perform economic activities by focusing on the citizens’ subjective preferences, i.e. determining their political legitimacy. Using data from a representative survey conducted among 318 citizens of the German state of Rhineland‐Palatine, we explore determinants for the support of either privatisation efforts or the instrumental thesis, a widespread principle in German‐speaking countries, which considers public enterprises solely as instruments to fulfil economic policy objectives. Our results indicate that the respondents’ perception of the efficiency of public enterprises as well as their personal economic situation are important factors for the support of privatisation. The influential factors for the use of public enterprises as policy instruments are political ideology, the perception of a higher security of supplying goods and services as well as opinions regarding corporate social responsibility. The subjective preferences of a (democratic) country's citizens are thus an important reason why the public sector should or should not play an active part in providing goods and services. This can play an important role when decision makers from the public sector are keen to take into account the citizens’ approval or disapproval of privatisation measures.     

云南农业合作经济组织规范发展探析

云南省农业合作经济组织最早产生于20世纪80年代中期。近年来,在各级党委、政府及农业相关部门的共同支持和努力下,云南农业合作经济组织发展迅速,成效显著。然而,整体上,云南农业合作经济组织的发展仍然处于起步阶段,存在思想认识不统一、财务会计制度缺失、融资渠道单一、运行管理缺乏合力等诸多不规范问题。为此,应以《农民专业合作社法》的颁布实施为契机,通过加强宣传与培训、建立健全政策法规、完善运行机制等措施,推进云南农业合作经济组织的规范发展。     

Can media drive the electorate? The impact of media coverage on voting intentions

A growing literature uses media data to explain perception and behaviour in the economic and political context. In this paper, we investigate how media coverage affects political preferences, namely voting intention. For our empirical analysis, we merge 14 years of human-coded data obtained from leading media in Germany with results of the comprehensive German Politbarometer survey from February 1998 through December 2012. In contrast to the existing literature, we do not utilize access to certain media outlets, but use the tonality of articles and newscasts on political parties and politicians based on human coded media data. To account for endogeneity, we employ instrumental variable probit estimations. In addition, we control for a multitude of (internal) personal characteristics, such as age, and gender, as well as for (external) macroeconomic variables, such as business climate, unemployment, and inflation. The results show that media coverage of a political party has a positive and significant effect on the voting intention for this party. When media outlets cover a political party more positively, the electorate has a greater tendency to vote for it. Hence, we conclude that the electoral success or failure of political parties is at least partially caused by the media coverage on them. This hints on the special responsibility of media in democracies.     

Preferences in the Future

Environmental economics has been much occupied with the discount rate, which is the value of future costs and benefits relative to present costsor benefits. But at least as important is the question of whatshould be discounted, that is, what the value of those future environmentalbenefits is to future generations. This paper analyzes the role for futurepreferences and discusses the state of knowledge. I argue that theappropriate discount rate is the market one, and that the real problemis determining future willingness-to-pay. This approach makes clearerthe connection between discounting and the valuation debate.This paper focuses on two features that have been prominent in that debate:existence value and reference dependence. I argue that thereis a vital connection between the two constructs and that this link yieldsimportant implications for future willingness-to-pay.     

Performance pay and worker cooperation: Evidence from an artefactual field experiment

We report the results of an artefactual field experiment with bicycle messengers in Switzerland and the United States. Messenger work is individualized enough that firms can choose to condition pay on it, but significant externalities in messenger behavior nonetheless give their on-the-job interactions the character of a social dilemma. Second-mover behavior in our sequential prisoner's dilemma allows us to characterize the cooperativeness of our participants. Among messengers, we find that employees at firms that pay for performance are significantly less cooperative than those at firms that pay hourly wages or who are members of cooperatives. To examine whether the difference is the result of treatment or selection we exploit the fact that firm type is location-specific in Switzerland and that entering messengers must work in performance pay firms in the U.S.     

江西省农超对接的现状与对策

文中在探讨实践中三种基本的农超对接情况的基础上,分析了江西省农超对接的现状,发现在农超对接中存在的问题,提出促进江西省农超对接发展的对策。20世纪70年代以来,以转基因技术为核心的现代生物技术产业开始蓬勃发展。