Discrimination and Skill Differences in an Equilibrium Search Model*

We analyze an equilibrium search model with three sources for wage and unemployment differentials among workers with the same (observed) human capital but different appearance (race): unobserved productivity, search intensities, and discrimination due to an appearance‐based employer disutility factor. We show that the structural parameters are identified using labor market survey data. Estimation results for a black and white high school graduate sample imply: black productivity is 3.3% lower than white productivity; the employer's disutility factor is 31% of the white's productivity level; and 56% of firms have a disutility factor toward blacks.     

Uncertain lifetimes and the welfare enhancing properties of annuity markets and social security

This paper explores the implications of social security programs and annuity markets through which agents, who are characterized by different distributions of length of lifetime, share death-related risks. When annuity markets operate, a non-discriminatory social security program affects only the intragenerational allocation of resources. In the absence of private information regarding individual survival probabilities, such a program will lead to a non-optimal intragenerational allocation of resources. However, the presence of adverse selection considerations gives rise to a Pareto improving role for a mandatory non-discriminatory social security program.     

Macroeconomic consequences of terror: theory and the case of Israel

This paper analyzes the effect of terror on the economy. Terror endangers life such that the value of the future relative to the present is reduced. Hence, due to a rise in terror activity, investment goes down, and in the long run income and consumption go down as well. Governments can offset terror by putting tax revenues into the production of security. Facing a tide in terror, a government that acts optimally increases the proportion of output spent on defense, but does not fully offset the tide. Thus, when terror peaks the long run equilibrium with an optimizing government is of lower output and welfare. Next, we show that this theory of terror and the economy, helps to understand changes in trend and business cycle of the Israeli economy. The estimates show that terror has a large impact on the aggregate economy. Continued terror, at the level of the death toll by about the same size as due to car accidents, is expected to decrease annual consumption per capita by about 5% in 2004. Had Israel not suffered from terror during the last 3 years, we estimate that the output per capita would have been 10% higher than it is today.     

The search for the best deal: How hotel cancellation policies affect the search and booking decisions of deal-seeking customers

This study examined cancellation policies and their role in shaping travelers’ deal-seeking behavior, exploring the impact of cancellation fees and deadlines on three, mutually exclusive, customers’ hotel booking behavior categories: “Book”, “Book and Search”, and “Search”. 291 subjects, who participated in a week long online “booking game”, attempted to book a room in a virtual hotel and get the best deal. The results were tested using small sample t-test for comparing proportions between two independent populations, non-parametric multiple pairwise comparisons, and multinomial logit regression models. The findings indicate that the cancellation deadline affected participants’ behavior while the size of the cancellation fee had no statistically significant impact. In addition, there was no significant difference between lenient cancellation deadline and no cancellation policy.     

Towards Assessing the Knowledge Gap in Medical Tourism

The medical tourism industry is a fast growing global niche market that generated $20 billion in income for destinations around the world. This study suggests and tests a mechanism to assess the medical tourism providers’ perceptions about the tourists’ perceived important product attributes when selecting a medical tourism destination. The results indicate that the various medical tourism providers groups do not vary in their perceptions regarding 24 important attributes of the medical tourism product and that they all agree that tourists perceive the medical variables to be more important than the tourism related variables. Using the Korean market for data collection, the study’s additional contribution is providing insights for Korean government agencies, operators of medical tourism hospitals, policymakers, and marketers.     

Equally-distributed equivalent utility,ex post egalitarianism and utilitarianism

We provide an axiomatization of expected equally-distributed equivalent-utility social welfare functions in the context of Harsanyi?s impartial observer theorem. For this family of social welfare functions, we show what additional axiom is necessary and sufficient for the observer to exhibit aversion to ex post inequality. We also relate this axiomatization to our axiomatization in a companion paper of generalized utilitarian social welfare functions. Given certain richness assumptions, the only social welfare functions that belong to both families are the utilitarian.     

A game of timing and visibility

We consider the following abstraction of competing publications. There are n players in the game. Each player i chooses a point x_i in the interval [0,1], and a player's payoff is the distance from its point x_i to the next larger point, or to 1 if x_i is the largest. For this game, we give a complete characterization of the Nash equilibrium for the two-player game, and, more important, we give an efficient approximation algorithm to compute numerically the symmetric Nash equilibrium for the n-player game. The approximation is computed via a discrete version of the game. In both cases, we show that the (symmetric) equilibrium is unique. Our algorithmic approach to the n-player game is non-standard in that it does not involve solving a system of differential equations. We believe that our techniques can be useful in the analysis of other timing games.     

Financial distress and the business cycle

In this paper we argue that firms' financial distress shouldplay a greater role in the macroeconomic analysis of the businesscycle. We provide a non-technical account of a general equilibriummodel that exhibits financially-driven equilibrium cycles. Weshow that the empirical evidence is widely supportive of thekey hypothesis and implications of our approach. We use themodel in order to evaluate the effects of several policy measures.It turns out that deepening the market for second-hand capitalgoods, subsidizing the interest payments of companies whichstart up when financial conditions are tight, and bailing outsome companies in default can indeed 'stabilize' the economy.By way of generalization, we may say that the policy reactionto a financially driven bust should be accommodating.