Estimating Beta

This paper presents evidence that Ordinary Least Squares estimators of beta coefficients of major firms and portfolios are highly sensitive to observations of extremes in market index returns. This sensitivity is rooted in the inconsistency of the quadratic loss function in financial theory. By introducing considerations of risk aversion into the estimation procedure using alternative estimators derived from Gini measures of variability one can overcome this lack of robustness and improve the reliability of the results.     

Analyzing the standard deduction as a presumptive tax

Presumptive taxes can be found in the tax system of most developing countries and make sense when the desired tax base is difficult to measure, verify, and monitor. As a substitute for the desired tax base, the presumed tax base is derived from items that can be more readily monitored. Presumed taxes can also be found in developed countries, and examples include fixed depreciation schedules in place of asset-specific measures of decline in asset value, floors on deductible expenses, and the standard deduction. The authors analyze presumptive income taxation with an ultimate goal to initiate an approach to optimal presumptive taxation. This paper begins that task by analyzing the standard deduction in the individual income tax system in the United States.     

How Much Is Investor Autonomy Worth?

There is a worldwide trend towards defined contribution savings plans, where investors are often able to select their own portfolios. How much is this freedom of choice worth? We present retirement investors with information about the distribution of outcomes they could expect to obtain from the portfolios they picked for themselves, and the same information for the median portfolio selected by their peers. A majority of our survey participants actually prefer the median portfolio to the one they picked for themselves. We investigate various explanations for these findings and offer some evidence that the results are partly attributable to the fact that investors do not have well‐defined preferences.     

On blocking coalitions: Linking Mas-Colell with Grodal–Schmeidler–Vind

In this paper we investigate the question of how many coalitions of a given relative size would block a non-Warlasian allocation in large finite economies. It is shown that in finite economies, if a Pareto optimal allocation is bounded away from being Walrasian, then, for any two numbers α$\alpha$ and β$\beta$ between 0 and 1, the proportion of blocking coalitions in the set of all coalitions with relative size between α$\alpha$ and β$\beta$, is arbitrarily close to 1/2, as the number of individuals in the economy becomes large.     

The “Make‐up” of a Regression Coefficient: Gender Gaps in the European Labor Market

We provide a comprehensive picture of the relationship between labor market outcomes and age by gender in the 28 European countries covered by the European Statistics on Income and Living Conditions. The analysis is based on a somewhat unconventional approach that refers to concentration curves in the Gini regression framework. It allows identification of ranges in the explanatory variables where local slopes change sign and/or size, i.e. the components that “make up” a regression coefficient. Gender is a crucial factor differentiating participation among workers, although employment–age profiles do not substantially differ. Relevant differences in age profiles concern working‐hours patterns: some countries are characterized by an almost specular behavior in men and women; other countries instead show similar patterns. Generally, earnings increase with age for both men and women. However, local regression coefficients are not monotonic over the entire age range and can even be locally negative in some countries.     

The stability threshold and two facets of polarization

In this paper we introduce the stability threshold that quantifies the minimal returns to size sufficient to prevent credible secession threats by regions of the country. Severity of internal tension has been linked to degree of polarization of citizens’ preferences and characteristics. We show that the increasing degree of polarization does not, in general, raise the stability threshold, even though this hypothesis holds in some asymptotic sense. We also examine the question of the number of smaller countries to be created if the unity of the large country is not sustainable, and investigate the link between this number and the degree of the country polarization. JEL Classification Numbers H20, D70, D73     

Gaza Enclave: Victim,Enemy, Rival

there is no abstract     

A Framework for Assessing Immorally Manipulative Marketing Tactics

A longstanding debate exists in both academic literature and popular culture about whether non-informative marketing tactics are manipulative. However, given that we tend to believe that some marketing tactics are manipulative and some are not, the question that marketers, their critics, and consumers need to ask themselves is that of how to actually determine whether any particular marketing tactic is manipulative and whether a given manipulative tactic is, in fact, immoral. This article proposes to operationalize criteria that can be used by marketers for making such determinations and attempts to provide some clarification toward our under- standing of the concept of manipulation and the conditions for the moral acceptability of manipulative marketing practices. It argues that a marketing tactic is manipulative if it is intended to motivate by undermining what the marketer believes is his/her audience’s normal decision-making process either by deception or by playing on a vulnerability that the marketer believes exists in his/her audience’s normal decision-making process. Such a tactic is morally objectionable on several grounds, which make it morally impermissible unless outweighed by sufficient “redemptive” moral considerations.     

Using the Capital Assets Pricing Model for risk management—A tool for multinational corporation managers

In this article, using a theoretical model and empirical analysis, we show how multinational corporations (MNCs) can utilize the fundamentals of the Capital Assets Pricing Model (CAPM) to formulate a strategic risk management in a global economy. We show that MNCs with branches all over the world, specifically those that specialize in nontradable goods (e.g., McDonald's), should consider each country's beta as the appropriate measure of the relevant risk attached to the location in the country. Finally, using data from the most recent world economic crisis (the subprime crisis), we show that during a world economic crisis the loss of growth will be significantly higher in countries with higher betas, and lower in those with lower betas. © 2011 Wiley Periodicals, Inc.