economic valuation of environmental damages due to the prestige oil spill in spain this paper presents a parametric and non parametric analysis of data from a contingent valuation study cvm conducted to estimate environmental use and passive use losses due to the prestige oil spill this is the first cvm study conducted in europe after a large oil spill the cvm survey was implemented using in person interviews mean willingness to pay wtp values were computed with both a parametric and non parametric approach parametric wtp estimation indicates that respondents in the sample are willing to pay about 40 51 per household to avoid a similar future oil spill in spain this implies that on average the spanish society places a value of the environmental losses caused by the prestige oil spill around 574 million non parametric estimates are slightly higher at 58 08 per household wtp results are similar to those obtained in the exxon valdez study

the behavior of foreign exchange rates the analysis of the distribution of foreign exchange rate changes provides a description of the behavior of foreign exchange rates and its determining underlying process the application of empirical methodologies or further theoretical developments is limited by the nature of this distribution in this paper the empirical analysis of major currencies during the flexible exchange rate period suggests that there is no unique distribution representing the behavior of the foreign exchange rate this however is determined both by foreign exchange management policies and the fundamental economic forces

trying to explain home bias in equities and consumption investors hold a substantially larger proportion of their wealth portfolios in domestic assets than standard portfolio theory would suggest a phenomenon called equity home bias in the absence of this bias investors would optimally diversify domestic output risk using foreign equities therefore consumption growth rates would tend to co move across countries even when output growth rates do not empirically however consumption growth rates tend to have a lower correlation across countries than do output growth rates a phenomenon i call consumption home bias in this paper i discuss these two biases and their potential relationship as suggested by the literature

the distribution of foreign exchange price changes trading day effects and risk measurement this study investigates the nature of price changes in a variety of major and minor foreign exchange markets the results suggest that the log of price changes over one trading day intervals seems to follow a non normal stable distribution function different measures of location and to lesser extent scale are present for different days of the week dollar denominated price changes are high on mondays and wednesdays and low on thursdays and fridays for all currencies the wednesday thursday result is consistent with the settlement procedures used in foreign exchange transactions in the dollar the friday monday result is consistent with an increase in demand for the dollar prior to the weekend this study offers some previously unavailable results on the nature of price changes in a certain set of speculative markets in particular this is a study of the distributional characteristics of daily and weekly price changes for a number of major and minor foreign exchange markets the results document the existence of non normal stable distributions for price changes in foreign exchange markets these price change distributions differ by day of the week in ways that are only partly attributable to the institutional structure of the market the results of the study are interpreted within the context of understanding how foreign exchange markets operate and within the context of prior studies of stock market data concerned with summarizing the probability distribution of price changes for different intervals including days of the week since bachelier s 1 original treatise that contained the proposition that speculative market prices follow a process that could be described by a normal distribution there have been numerous alternative attempts to describe the stochastic processes which characterize speculative market prices these studies have not resulted in any generalized description of the probability distribution of price changes in such markets indeed the evidence suggests substantial differences in the process among various types of financial instruments the failure to achieve consensus can be traced to the lack of robustness in the statistical procedures employed to estimate processes and to differences in the underlying institutional or economic arrangements which are unique to that market the possibility of differences in the information set used to assess value or differences in technology for transmitting information makes it important to secure additional

taking gravity online the role of virtual proximity in international finance abstract this paper analyses international patterns of bilateral portfolio equity and debt investment in a gravity model framework we contribute to the literature by exploring the role of virtual proximity measured by bilateral internet hyperlinks between countries as a novel proxy for cross border information flows and cultural proximity more generally our findings show that bilateral portfolio investment is significantly affected by virtual proximity indicating that countries which are more closely connected in terms of web content are more integrated financially the effect is stronger for equity than for debt investment highlighting the larger information sensitivity of equity investments and is largest for investments among advanced economies moreover including virtual proximity in estimations reduces the importance of traditionally used proxies for information asymmetries and cultural proximity

do contingent valuation estimates pass a scope test a meta analysis abstract this paper considers the scope test proposed to judge the internal consistency of contingent valuation estimates the test is shown to be quite sensitive to the maintained hypotheses required to derive fairly precise expectations for the properties of wtp functions and therefore a different approach may be needed in gauging the reliability of cv this paper describes an approach that relies on a weight of the evidence criterion and uses meta analysis to develop a systematic appraisal of what the economic values of changes in amenity resources are the approach is illustrated for the case of estimating people s willingness to pay for improving or maintaining visibility at the national parks

immigration and equity home bias abstract why do investors hold such large positions in domestic equity when there are gains to be made from international diversification this equity home bias puzzle has received considerable attention in the literature with asymmetric information on domestic and foreign assets whether by individual choice or by market imperfection emerging as the most plausible explanation what happens when we consider a subset of investors whose information sets are closer to investors in foreign countries i assess the relationship between immigration and equity home bias and find that inward migration is positively correlated with increased foreign equity positions and reduced home bias looking across income groups outward migration reduces home bias for relatively rich countries but may actually increase home bias when migration occurs to or from a developing country these results suggest that immigration generates a positive externality of increased information flows for developed countries but not for developing nations the effects of immigration on investment are strongest within the euro zone suggesting that this positive externality of immigration is largest when barriers to portfolio diversification such as currency risk are lowest

the determinants of cross border equity flows abstract we explore a new panel data set on bilateral gross cross border equity flows between 14 countries 1989 1996 we show that a gravity model explains international transactions in financial assets at least as well as goods trade transactions gross transaction flows depend on market size in source and destination country as well as trading costs in which both information and the transaction technology play a role distance proxies some information costs and other variables explicitly represent information transmission an information asymmetry between domestic and foreign investors and the efficiency of transactions the geography of information is the main determinant of the pattern of international transactions while there is weak support in our data for the diversification motive once we control for the informational friction we broaden the scope of our results by presenting some evidence linking the results on equity transactions to equity holdings

diagnosing insensitivity to scope in contingent valuation sensitivity to scope is considered a desirable property of contingent valuation studies and often treated as a necessary condition for validity we first provide an overview of scope insensitivity explanations put forth in the environmental valuation literature then we analyze data from a contingent valuation survey eliciting willingness to pay to prevent oil spills of four different magnitudes in arctic norway in the baseline analysis the scope inference is ambiguous there is only statistical difference in willingness to pay to avoid a very large versus small oil spill nok 1869 and nok 1086 respectively however further explorations show that several confounding factors suggested in the literature influence the scope inference the scope sensitivity improves when we control for subjective probabilities of amenity provision exclude respondents based on the debriefing questions take into consideration the sample sizes and impose diminishing marginal utility overall the analysis supports an emerging view in the contingent valuation literature suggesting that statistical scope insensitivity is not a sufficient reason for deeming a study invalid

the scope trials variation in sensitivity to scope and wtp with directionally bounded utility functions abstract sensitivity to scope refers to the property that willingness to pay for an environmental amenity is an increasing function of the scope of the amenity measurements of the degree of sensitivity to scope are commonly proposed as a test for the reliability of contingent valuation studies we evaluate the traditional scope test using neoclassical utility functions that are directionally bounded we provide a formal definition of sensitivity to scope and show that directionally bounded utility functions can produce arbitrarily small degrees of sensitivity to scope we conclude that a failure to satisfy existing scope tests should not be used as a prima facie basis for rejecting contingent valuation studies this does not imply that small degrees of sensitivity to scope should always be viewed as acceptable rather the results of scope tests should be considered more carefully with attention given to the substitutability of market and non market goods

the impacts of immigrants and institutions on bilateral tourism flows abstract in this paper we use data on recent bilateral tourism flow from 34 organisation for economic co operation and development oecd countries to 52 middle to low income countries for the period 1995 2010 to determine whether immigration trade and institutional quality play a role in driving oecd nationals to visit immigrant source countries except for the african countries the results show that immigrants residing in oecd countries have a positive advertising effect for their home country inducing tourism flows from oecd countries we also find that the quality of institutions along with freedom and civil liberty indices are important in selecting tourism destinations a massive 8 of the variation in tourism flows can be accounted for by these factors these results hold for the subsample and the whole sample with two exceptions european and african destinations we posit that this feature of the data exists because european african countries are so similar to each other and small differences in the indexes do not matter at the top bottom of the distribution by controlling for gravity and macroeconomic stability variables we also show that the trade flows between countries among other factors play a crucial and stable role on tourism flows dynamic panel data estimation is used to account for the influence of repeat visits and support our findings

plausible responsiveness to scope in contingent valuation plausible responsiveness to scope is a question of economic significance in addition to statistical significance of the scope test in contingent valuation we briefly review the history of the scope test in order to place the current issue in the context of the bp deepwater horizon oil spill as a result of the review we gain insights into how the issue of scope adequacy arose twenty years after it was first mentioned by the noaa panel on contingent valuation following the exxon valdez oil spill we then provide a review of desvousges mathews and train 2012 who promote the adding up test to identify inadequate responsiveness to scope adequacy the adding up test is a test of the construct validity of the contingent valuation method but is flawed as a measure of economic significance we propose scope elasticity of willingness to pay as a measure of economic significance a simulation suggests a likely range of elasticity estimates given linear and quadratic functional forms for the willingness to pay function in order to illustrate the ease of implementation of scope elasticity within the context of the standard scope test we calculate scope elasticity with willingness to pay estimates from several studies describe two studies that directly estimate scope elasticity and estimate scope elasticity with primary data from two studies all of these empirical estimates of scope elasticity fall within the range of scope elasticity suggested by the simulation scope elasticity provides a practical way forward relative to the adding up test on the issue of economic significance of scope effects

foreign exchange rationing and employment in industrializing countries abstract this paper analyzes the interaction of two constraints foreign currency controls and a minimum wage on the behavior of a small industrializing country the latter is characterized by the large proportion of intermediate inputs in total imports the main results are the following 1 the two distortions magnify the adverse effects on employment of a minimum wage 2 the rationing policy is self defeating on its own terms 3 devaluation is almost inevitable despite the political considerations that make it so difficult and 4 black markets may be tolerated so openly because they help undo some of the harmful effects noted above

information immobility and the home bias puzzle many argue that home bias arises because home investors can predict home asset payoffs more accurately than foreigners can but why does global information access not eliminate this asymmetry we model investors endowed with a small home information advantage who choose what information to learn before they invest surprisingly even when home investors can learn what foreigners know they choose not to investors profit more from knowing information others do not know learning amplifies information asymmetry the model matches patterns of local and industry bias foreign investments portfolio outperformance and asset prices finally we propose new avenues for empirical research

distribution of parallel exchange rates in african countries abstract this paper investigates the distribution of parallel exchange rates in african countries using exploratory data analysis techniques and model fitting stable laws are fitted to empirical distributions using the maximum likelihood estimation method empirical evidence supports the stable hypothesis these distributions are positively skewed and have tails that are much heavier than gaussian counterparts the stable hypothesis is further supported by the converging variance test which suggests that these distributions have infinite variance

brain drain in developing countries an original data set on international migration by educational attainment for 1990 and 2000 is used to analyze the determinants of brain drain from developing countries the analysis starts with a simple decomposition of the brain drain in two multiplicative components the degree of openness of sending countries measured by the average emigration rate and the schooling gap measured by the education level of emigrants compared with natives regression models are used to identify the determinants of these components and explain cross country differences in the migration of skilled workers unsurprisingly the brain drain is strong in small countries that are close to major organization for economic co operation and development oecd regions that share colonial links with oecd countries and that send most of their migrants to countries with quality selective immigration programs interestingly the brain drain increases with political instability and the degree of fractionalization at origin and decreases with natives human capital

exchange rate rules black market premia and fiscal deficits the bolivian hyperinflation with dual exchange rates where a managed official exchange rate co exists with a floating black market rate a given budget deficit may be consistent with many different inflation rates rather than two which is the normal result in closed economy systems further all these inflation equilibria are saddle point stable a policy of adjusting the official exchange rate towards the black market rate may cause the economy to converge to a high inflation saddle point stable equilibrium where money inflation elasticity exceeds unity the analytics are motivated and illustrated by the bolivian hyperinflation of 1984 1985

testing willingness to pay models of discrete choice contingent valuation survey data this paper considers models of willingness to pay wtp based on dichotomous choice contingent valuation survey data and examines the effect of the survey design on tests of goodness of fit simulations show that eliciting single binary responses result in tests that have low power in detecting departures from the maintained distribution of wtp unless the sample size is truly large the power of the tests improves if a follow up question and a moderate number of sets of bid values are used and if the bids are not placed on the extreme tails of the wtp distribution

distribution properties of latin american black market exchange rates abstract this paper conducts a statistical analysis of the distribution properties of black market exchange rate changes for 12 latin american currencies the infinite variance stable law hypothesis is tested using a regression type technique to estimate the parameters of the stable paretian distribution strong evidence is found supporting this hypothesis a separate analysis of extreme observations using a robust statistical procedure further supports these findings

finding sensitivity to scope in nonmarket valuation summary data limitations frequently prevent using actual consumer behavior in determining natural resource values so stated preference methods are used whether value estimates show sensitivity to the scope of resource valued is a key test for their validity which several studies fail developing a correlated panel mixed logit model of households water quality valuations in california we show that false negatives in scope tests can result when individual preference variation and correlation are ignored and split sample comparisons are used monte carlo simulations further demonstrate potentially prevalent false rejections of scope sensitivity even when within subject comparisons of willingness to pay portray strong scope sensitivity copyright 2013 john wiley sons ltd

emerging markets and heavy tails abstract emerging countries are held to be subject to more frequent and more pronounced external and internal shocks than their developed counter parts this suggests that key variables pertaining to their markets including their exchange rates will be marked by greater likelihood of extreme observations and large fluctuations we focus on the hypothesis that compared to developed country exchange rates emerging country exchange rates will be more pronouncedly heavy tailed we find support for the hypothesis using recently proposed robust tail index estimation methods which in particular perform well under heavy tailed dependent garch processes that are often used for modeling exchange rates according to the estimation results reported in the paper variances may be infinite for several emerging country exchange rates tail index values p 2 6 2 8 appear to be at the dividing boundary between the two sets of countries while the moments of order p 2 6 2 8 are finite for most of the developed country exchange rates they may be or are infinite for most of the emerging country exchange rates we also study the impact of the on going financial and economic crisis and find that heavy tailedness properties of most exchange rates did not change significantly with the onset of the crisis at the same time some foreign exchange markets have experienced structural changes in their heavy tailedness properties during the crisis

gains from international diversification 1968 85 returns on portfolios of stocks and bonds this paper applies the multi period investment model to a universe of international securities on the basis of the simple probability assessment approach our principal findings are 1 the gains from including non u s asset categories in the universe were remarkably large in some cases statistically significant especially for the highly risk averse strategies 2 the gains from removing the no leverage constraint were more substantial than they were in the absence of non u s securities and 3 there is strong evidence of market segmentation in that the optimal levels of investment in u s securities were mostly zero in the presence of the non u s asset categories