pricing multiasset equity options how relevant is the dependence function abstract in this paper we test how different choices for the dependence function can affect the prices of a set of multiasset equity options we conduct the analysis for various 5 dimensional baskets of uk shares and a wide range of payoffs for the multiasset options consistent with the instruments traded on the market we also test the relevance of the dependence specification over both volatile and quiet market scenarios interestingly we find that in most circumstances the choice of a dependence structure richer than the standard linear correlation does not seem to affect option prices substantially however the dependence function becomes more relevant in particularly volatile market conditions

information rigidities and the news adjusted output gap a vector autoregressive model of actual output and expected output obtained from surveys is used to test for information rigidities and to provide a characterisation of output dynamics that accommodates these information structures news on actual and expected outputs is decomposed to identify innovations understood to have short lived effects and these are used with the model to derive a news adjusted output gap measure the approach is applied to us data over 1970q1 2014q2 and the new gap measure is shown to provide a good leading indicator of inflation

the role of rural producer organizations for agricultural service provision in fragile states this article assesses the extent of external linkages and the provision of agricultural services by rural producer organizations in a post conflict setting using new survey data collected by the international food policy research institute in three provinces of the democratic republic of the congo this study finds that various internal and external factors affect the capacity of organizations to interact with external organizations external linkages ability to collect financial support from their members management capacity and formal governance structures all contribute to explaining relative performance in agricultural service delivery we also find that exogenous events affect the relative performance of rural producer organizations our results suggest that closeness to conflict reduces the capacity of producer organizations to provide agricultural services

derivative pricing using multivariate affine generalized hyperbolic distributions abstract in this paper we use multivariate affine generalized hyperbolic magh distributions introduced by schmidt et al 2006 to show how to price multidimensional derivatives when the underlying asset follows a magh distribution we also illustrate the approach using market data from the bovespa sao paulo stock exchange and the exchange rate of the brazilian real vs us dollar to price some multidimensional derivatives

the logic of insurgent electoral violence competitive elections are essential to establishing the political legitimacy of democratizing regimes we argue that insurgents undermine the state s mandate through electoral violence we study insurgent violence during elections using newly declassified microdata on the conflict in afghanistan our data track insurgent activity by hour to within meters of attack locations our results suggest that insurgents carefully calibrate their production of violence during elections to avoid harming civilians leveraging a novel instrumental variables approach we find that violence depresses voting collectively the results suggest insurgents try to depress turnout while avoiding backlash from harming civilians counterfactual exercises provide potentially actionable insights for safeguarding at risk elections and enhancing electoral legitimacy in emerging democracies

tempered stable and tempered infinitely divisible garch models abstract in this paper we introduce a new garch model with an infinitely divisible distributed innovation this model which we refer to as the rapidly decreasing tempered stable rdts garch model takes into account empirical facts that have been observed for stock and index returns such as volatility clustering non zero skewness and excess kurtosis for the residual distribution we review the classical tempered stable cts garch model which has similar statistical properties by considering a proper density transformation between infinitely divisible random variables we can find the risk neutral price process thereby allowing application to option pricing we propose algorithms to generate scenarios based on garch models with cts and rdts innovations to investigate the performance of these garch models we report parameter estimates for the dow jones industrial average index and stocks included in this index to demonstrate the advantages of the proposed model we calculate option prices based on the index

structure behavior and voter turnout in the united states electoral participation in the united states is examined to provide a clearer account of the effect of the registration requirement on individual voting behavior pooling nes data from 1980 1984 and 1988 i first model with traditional and selection bias techniques the full electorate to distinguish among three groups nonregistrants registered nonvoters and voters analyses limited to recent movers then reported to understand more fully the forces associated with the actual decision calculi of registering and voting the influences of many factors commonly accepted as important determinants of voting are disentangled and their effect at each stage is ascertained factors yielding inconsistent effects in previ research or believed to be unimportant such as race gender attitudes toward the candidates and trust government are shown to deserve closer scrutiny by electoral scholars

who benefited from burundi s demobilization program this paper assesses the impact of the demobilization reinsertion and reintegration program in post war burundi two major rebel groups benefited from cash and in kind transfers the cndd fdd from 2004 and the fnl from 2010 a panel data of households collected in 2006 and 2010 is combined with official records from the national commission for demobilization reinsertion and reintegration regression analysis shows that the cash payments received by fnl demobilized households had a positive impact on consumption nonfood spending and investments the program also generated positive spillovers in the villages where fnl combatants returned ex combatants indeed spent a large part of their allowance on consumption goods and clothing thereby generating a short run economic boom in villages however the long run evolution of consumption indicators is negative for cndd fdd households as well as for villages where cndd fdd combatants returned suggesting that the direct impact and the spillovers of the program vanished in the long run

humanitarian crises and adolescent well being knowledge gaps and prospects adolescence constitutes the second and final window of human growth and a period of specific vulnerabilities such as early pregnancy early marriage hiv infection suicide violence alcohol and drugs only a limited body of research investigates the effects of humanitarian crises on the human capital and well being of adolescents the evidence focuses on the short term effects of conflict and to a lesser extent natural disasters on education physical health and nutrition but not on mental health most analyses examine the situations of individuals exposed in utero and young childhood but rarely during adolescence typically missing are robust empirical identification strategies and estimates on heterogeneous effects across age or gender the lack of quality data and challenges in defining adolescence establishing causality or ensuring ethical research explain the knowledge gaps possible ways to expand the evidence base include mixing georeferenced data on individual location with georeferenced data on crises sharpening quasi experimental analytical techniques and reconsidering the current timing of demographic data collection now spanning 4 or 5 year intervals the failure to make such adjustments will end by ignoring specific vulnerabilities among adolescents and render sustainable progress in well being globally narrowing inequalities and guaranteeing human rights to all more difficult to achieve

using private forecasts to estimate the effects of monetary policy i develop a methodology that uses the forecasts of market participants and of policy makers to estimate the effects of monetary policy on output and inflation my approach has advantages over the standard practice of fitting a vector autoregression to the data i apply my methodology to data on output interest rates and prices i find that even using the federal reserve board s greenbook forecasts to control for the policy maker s information set prices rise initially in response to a monetary contraction this finding undermines the standard justification for including an index of commodity prices in vars

volunteerism after the tsunami the effects of democratization using three waves of survey data from fishing villages in aceh indonesia for 2005 09 the paper examines the determinants of local volunteer labor after the tsunami volunteer labor is the village public sector labor force for maintenance clean up and renovation of public capital while also examining the effects on volunteerism of village destruction and trauma pre existing social capital diversity and aid delivery the papers focuses on the effects of democratization the tsunami and massive international aid effort prompted the settlement of the insurgency movement in aceh which had led to suspension of local elections over the prior twenty or more years until 2006 village heads who call volunteer days were effectively selected by village elites who may highly value the public facilities maintained by volunteer labor with elections volunteer days fall under the new regime with democratically elected village heads calling fewer volunteer days which may appeal more to the typical villager identification comes from pseudo randomized differential timing of elections

do giant oilfield discoveries fuel internal armed conflicts we use new data to examine the effects of giant oilfield discoveries around the world since 1946 on average these discoveries increase per capita oil production and oil exports by up to 50 percent but these giant oilfield discoveries also have a dark side they increase the incidence of internal armed conflict by about 5 8 percentage points this increased incidence of conflict due to giant oilfield discoveries is especially high for countries that had already experienced armed conflicts or coups in the decade prior to discovery

a war is forever the long run effects of early exposure to world war ii on trust abstract this paper examines the long term effect of conflict on trust by using changes in places and timing of combats during world war ii we focus on the pre school period an important life stage for the formation of trust and an age where war exposure may persist throughout life we find robust evidence that individuals exposed to combats in the first six years of life display lower trust and social engagement well into adulthood in light of the well known relationship between trust and collective action our results lend credence to the theory that violent conflict inhibits well functioning government in long run

balancing energy strategies in electricity portfolio management traditional management of electricity portfolios is focused on the day ahead market and futures of longer maturity within limits market participants can however also resort to the balancing energy market to close their positions in this paper we determine strategic positions in the balancing energy market and identify corresponding economic incentives in an analysis of the german balancing energy demand we find that those strategies allow an economically optimal starting point for real time balancing and create a marketplace for flexible capacity that is more open than alternative marketplaces the strategies we proffer in this paper we believe will contribute to an effective functioning of the electricity market

effective use of survey information in estimating the evolution of expected inflation the evolution of the term structure of expected u s inflation is modeled using survey data to provide timely information on structural change not contained in lagged inflation data to capture shifts in subjective perceptions the model is adaptive to long horizon survey expectations however even short horizon survey expectations inform shifting endpoint estimates that capture the lag between inflation and the perceived inflation target which anchors inflation expectations results show movements of the perceived target are an important source of inflation persistence and suggest historical u s monetary policy was not fully credible for much of the postwar sample

monetary policy trend inflation and the great moderation an alternative interpretation with positive trend inflation the taylor principle does not guarantee a determinate equilibrium we provide new theoretical results on determinacy in new keynesian models with positive trend inflation and new empirical findings on the federal reserve s reaction function before and after the volcker disinflation to find that i while the fed likely satisfied the taylor principle before volcker the us economy was still subject to self fulfilling fluctuations in the 1970s ii the us economy switched to determinacy during the volcker disinflation and iii the switch reflected changes in the fed s response to macroeconomic variables and the decline in trend inflation jel e12 e23 e31 e32 e52

a new approach to decomposition of economic time series into permanent and transitory components with particular attention to measurement of the business cycle abstract this paper introduces a general procedure for decomposition of non stationary time series into a permanent and transitory component allowing both components to be stochastic the permanent component is shown to be a random walk with drift and the transitory or cyclical component is a stationary process with mean zero the decomposition methodology which depends only on past data and therefore is computable in real time is applied to the problem of measuring and dating business cycles in the portwar u s economy we find that measured expansions and contractions are of roughly equivalent duration and that our dating of cyclical episodes tends to lead the traditional nber dating and to a lesser extent the growth cycle chronology of zarnowitz and boschan 1977

war and institutions new evidence from sierra leone scholars of economic development have argued that war can have adverse impacts on later economic performance war destroys physical capital and infrastructure and disrupts human capital accumulation and it may also damage institutions by creating political instability destroying the social fabric and endangering civil liberties world bank 2003 understanding war s impact on development is particularly important for sub saharan africa where two thirds of all nations suffered from armed conflict during the 1980s and 1990s the proliferation of armed conflict in the world s poorest region begs the question of what role conflict may be playing in africa s disappointing economic performance yet the net long run effects of war are ambiguous from the point of view of economic theory to the extent that war impacts are limited to the destruction of capital the neoclassical model predicts rapid economic growth postwar converging back to steady state growth several recent papers that study war impacts including in japan donald r davis and david e weinstein 2002 and vietnam miguel and gerard roland 2005 find few persistent local impacts of u s bombing with heavily bombed areas experiencing rapid recovery to prewar population and economic trends this is consistent with the neoclassical model if war s main consequence is to destroy capital war could also affect long run growth either positively or negatively by modifying the scale parameter in the neoclassical growth model for example while the world bank 2003 argues that war has adverse institutional consequences charles h tilly shows how war promoted state formation and nation building in europe historically ultimately strengthening institutions tilly 1975 we study the aftermath of the recent civil conflict in sierra leone one notable aspect of this project is the extensive household data for sierra leone on conflict experiences and on local institutions our results are complementary to the other recent studies mentioned above none of which examines institutional impacts

insecure property and technological backwardness we consider the incentive to adopt superior technologies when private property is insecure the welfare costs of insecure property can be substantially greater than those commonly associated with diversion and with the disincentive effect induced by imperfect appropriation of returns when private property is sufficiently insecure anticipation of conflict over economic distribution gives rise to technological backwardness even though 1 superior technologies are readily available at zero cost and 2 the ex post diversion of resources might be small

news noise and fluctuations an empirical exploration a common view of the business cycle gives a central role to anticipations consumers and firms continuously receive information about the future which is sometimes news and sometimes just noise based on this information consumers and firms choose spending and because of nominal rigidities spending affects output in the short run if ex post the information turns out to be news the economy adjusts gradually to a new level of activity if it turns out to be just noise the economy returns to its initial state therefore the dynamics of news and noise generate both short run and long run changes in aggregate activity this view appears to capture many of the aspects often ascribed to fluctuations the role of animal spirits in affecting demand spirits coming here from a rational reaction to information about the future the role of demand in affecting output in the short run together with the notion that in the long run output follows a natural path determined by fundamentals in this paper we examine whether this view is consistent with the data we reach three main conclusions the first two methodological the third substantive structural vars typically cannot recover news and noise shocks the reason is straightforward if agents face a signal extraction problem and are unable to separate news from noise then the econometrician faced with either the same data as the agents or a subset of these data cannot do it either while structural estimation methods cannot recover the actual time series for news and noise shocks either they can recover underlying structural parameters and thus the relative role and dynamic effects of news and noise shocks estimation of both a simple model and then of a more elaborate dsge model suggest that agents indeed solve such a signal extraction problem and that noise shocks play an important role in determining short run dynamics recent efforts to estimate business cycle models in which expectations about the future play an important role include christiano et al 2010 and schmitt grohe and uribe 2012 those papers follow the approach of jaimovich and rebelo 2009 and model news as perfectly anticipated productivity changes that will occur at

the slave trade and the origins of mistrust in africa in a recent study nunn 2008 examines the long term impacts of africa s slave trade he finds that the slave trade which occurred over a period of more than 400 years had a significant negative effect on long term economic development although the article arguably identifies a negative causal relationship between the slave trade and income today the analysis is unable to establish the exact causal mechanisms underlying this reduced form relationship in this article we examine one of the channels through which the slave trade may affect economic development today combining contemporary individual level survey data with historical data on slave shipments by ethnic group we ask whether the slave trade caused a culture of mistrust to develop within africa initially slaves were captured primarily through state organized raids and warfare but as the trade progressed the environment of ubiquitous insecurity caused individuals to turn on others including friends and family members and to kidnap trick and sell each other into slavery sigismund wilhelm koelle 1854 p e h hair 1965 charles piot 1996 we hypothesize that in this environment a culture of mistrust may have evolved which may persist to this day we show that current differences in trust levels within africa can be traced back to the transatlantic and indian ocean slave trades combining contemporary individual level survey data with historical data on slave shipments by ethnic group we find that individuals whose ancestors were heavily raided during the slave trade are less trusting today evidence from a variety of identification strategies suggests that the relationship is causal examining causal mechanisms we show that most of the impact of the slave trade is through factors that are internal to the individual such as cultural norms beliefs and values jel j15 n57 z13

the consequences of child soldiering abstract little is known about the impacts of military service on human capital and labor market outcomes due to an absence of data as well as sample selection recruits are self selected screened and selectively survive we examine the case of uganda where rebel recruitment methods provide exogenous variation in conscription economic and educational impacts are widespread and persistent schooling falls by nearly a year skilled employment halves and earnings drop by a third military service seems to be a poor substitute for schooling psychological distress is evident among those exposed to severe war violence and is not limited to ex combatants

implications of rational inattention abstract a constraint that actions can depend on observations only through a communication channel with finite shannon capacity is shown to be able to play a role very similar to that of a signal extraction problem or an adjustment cost in standard control problems the resulting theory looks enough like familiar dynamic rational expectations theories to suggest that it might be useful and practical while the implications for policy are different enough to be interesting

optimal monetary policy with uncertain fundamentals and dispersed information this paper studies optimal monetary policy in a model where aggregate fluctuations are driven by the private sector s uncertainty about the economy s fundamentals information on aggregate productivity is dispersed across agents and there are two aggregate shocks a standard productivity shock and a noise shock affecting public beliefs about aggregate productivity neither the central bank nor individual agents can distinguish the two shocks when they are realized despite the lack of superior information monetary policy can affect the economy s relative response to the two shocks as time passes better information on past fundamentals becomes available the central bank can then adopt a backward looking policy rule based on more precise information about past shocks by announcing its response to future information the central bank can influence the expected real interest rate faced by forward looking consumers with different beliefs and thus affect the equilibrium allocation if the announced future response is sufficiently aggressive the central bank can completely eliminate the effect of noise shocks however this policy is typically suboptimal as it leads to an excessively compressed distribution of relative prices the optimal monetary policy balances the benefits of aggregate stabilization with the costs in terms of cross sectional efficiency copyright wiley blackwell

permanent vs transitory components and economic fundamentals any non stationary series can be decomposed into permanent or trend and transitory or cycle components typically some atheoretic pre filtering procedure is applied to extract the permanent component this paper argues that analysis of the fundamental underlying stationary economic processes should instead be central to this process we present a new derivation of multivariate beveridge nelson permanent and transitory components whereby the latter can be derived explicitly as a weighting of observable stationary processes this allows far clearer economic interpretations different assumptions on the fundamental stationary processes result in distinctly different results but this reflects deep economic uncertainty we illustrate with an example using garratt et al s 2003a small vecm model of the uk economy

measuring the level and uncertainty of trend inflation abstract firmly anchored inflation expectations are widely viewed as playing a central role for the conduct of monetary policy this paper presents estimates of trend inflation based on information contained in monthly data on realized inflation survey expectations and the term structure of interest rates in order to assess whether inflation expectations are anchored a timevarying volatility of trend shocks is estimated as well while there is some commonality in inflation and survey based estimates of trend inflation yield based trend estimates embed a highly persistent component orthogonal to trend inflation trimmed mean inflation rates and survey forecasts are most indicative of trend inflation

monetary policy for inattentive economies we offer a contribution to the analysis of optimal monetary policy we begin with a critical assessment of the existing literature arguing that most work is based on implausible models of inflation output dynamics we then suggest that this problem may be solved with some recent behavioral models which assume that price setters are slow to incorporate macroeconomic information into the prices they set a specific such model is developed and used to derive optimal policy in response to shocks to productivity and aggregate demand optimal policy is price level targeting base drift in the price level which is implicit in the inflation targeting regimes currently used in many central banks is not desirable in this model when shocks to desired markups are added optimal policy is flexible targeting of the price level that is the central bank should allow the price level to deviate from its target for a while in response to these supply shocks but it should eventually return the price level to its target path optimal policy can also be described as an elastic price standard the central bank allows the price level to deviate from its target when output is expected to deviate from its natural rate

mine yours or ours the efficiency of household investment decisions an experimental approach we conduct an experiment to measure the relative importance of key factors that influence the efficiency of household investment decisions we find that both for men and women their spouse s access to information does not affect efficiency however they are willing to sacrifice much efficiency for greater personal control over household income intriguingly even when spouses control over household income is exogenously assigned inefficiency persists as a wife s assigned share increases husbands undercut their own income to reduce hers this self destructive and spiteful behavior is best explained by non economic factors such as identity seldom emphasized in mainstream household economic models

can the west save africa in the new millennium the western aid effort toward africa has surged due to writ ings by well known economists a celebrity mass advocacy campaign and decisions by western leaders to make africa a major foreign policy priority this survey contrasts the predominant transformational approach west comprehensively saves africa to occasional swings to a marginal approach west takes one small step at a time to help individual africans evaluation of one step at a time initiatives is generally easier than that of transformational ones either through controlled experiments although these have been oversold or simple case studies where it is easier to attribute outcomes to actions we see two themes emerge from the literature survey 1 escalation as each successive western transformational effort has yielded disappointing results as judged at least by stylized facts since again the econometrics are shaky the response has been to try an even more ambitious effort and 2 the cycle of ideas rather than a progressive testing and discarding of failed ideas we see a cycle in aid ideas in many areas in africa with ideas going out of fashion only to come back again later after some lapse long enough to forget the previous disappointing experience both escalation and cyclicality of ideas are symptomatic of the lack of learning that seems to be characteristic of the transfor mational approach in contrast the marginal approach has had some successes in improving the well being of individual africans such as the dramatic fall in mortality

financial market models with levy processes and time varying volatility abstract asset management and pricing models require the proper modeling of the return distribution of financial assets while the return distribution used in the traditional theories of asset pricing and portfolio selection is the normal distribution numerous studies that have investigated the empirical behavior of asset returns in financial markets throughout the world reject the hypothesis that asset return distributions are normally distribution alternative models for describing return distributions have been proposed since the 1960s with the strongest empirical and theoretical support being provided for the family of stable distributions with the normal distribution being a special case of this distribution since the turn of the century specific forms of the stable distribution have been proposed and tested that better fit the observed behavior of historical return distributions more specifically subclasses of the tempered stable distribution have been proposed in this paper we propose one such subclass of the tempered stable distribution which we refer to as the kr distribution we empirically test this distribution as well as two other recently proposed subclasses of the tempered stable distribution the carr geman madan yor cgmy distribution and the modified tempered stable mts distribution the advantage of the kr distribution over the other two distributions is that it has more flexible tail parameters for these three subclasses of the tempered stable distribution which are infinitely divisible and have exponential moments for some neighborhood of zero we generate the exponential levy market models induced from them we then construct a new garch model with the infinitely divisible distributed innovation and three subclasses of that garch model that incorporates three observed properties of asset returns volatility clustering fat tails and skewness we formulate the algorithm to find the risk neutral return processes for those garch models using the change of measure for the tempered stable distributions to compare the performance of those exponential levy models and the garch models we report the results of the parameters estimated for the s p 500 index and investigate the out of sample forecasting performance for those garch models for the s p 500 option prices

collective action in diverse sierra leone communities scholars have identified ethnic divisions as a leading cause of underdevelopment due partially to their adverse effects on public goods we investigate this issue in post war sierra leone one of the world s poorest and most ethnically diverse countries to address concerns over endogenous local ethnic composition we use an instrumental variables strategy using earlier census data on ethnicity and include several historical and geographic covariates perhaps surprisingly we find that local diversity is not associated with worse public goods provision across multiple outcomes and specifications with precisely estimated zeros we investigate the role of historical factors in generating the findings

an economic approach to social capital a standard optimal investment model can be used to analyse an individual s decision to accumulate social capital we analyse six facts that support the predictions of this individual based approach 1 social capital first rises and then falls with age 2 social capital declines with expected mobility 3 social capital rises in occupations with greater returns to social skills 4 social capital is higher among homeowners 5 social connections fall sharply with physical distance 6 people who invest in human capital also invest in social capital we fail to find robust evidence that social capital investments fall with the value of time or that geographic religious groups generate social capital complementarities

the long term effects of africa s slave trades can part of africa s current underdevelopment be explained by its slave trades to explore this question i use data from shipping records and historical documents reporting slave ethnicities to construct estimates of the number of slaves exported from each country during africa s slave trades i find a robust negative relationship between the number of slaves exported from a country and current economic performance to better understand if the relationship is causal i examine the historical evidence on selection into the slave trades and use instrumental variables together the evidence suggests that the slave trades have had an adverse effect on economic development

extracting market information from equity options with exponential levy processes levy processes have been successfully applied in the modeling of financial assets useful information such as implied volatility skewness and risk preferences can be derived from market option prices in this paper we advocate using esscher conjugate levy processes to estimate risk neutral and empirical densities more specifically we employ the exponential meixner and nig processes to calculate in closed form the pricing kernel in the equity market and then study the evolution of equity market behavior between 2002 and 2010 our empirical analysis using s p 500 options shows that the risk preferences of equity investors were signalling an anomaly in the market well before the subprime prime mortgage crisis august 2007 and the crisis of confidence that followed anticipating the downfall in equity markets in 2008 but then returning to normal levels in 2009

a garch option pricing model with α stable innovations we develop an option pricing model which is based on a garch asset return process with stable innovations with truncated tails the approach utilizes a canonic martingale measure as pricing measure which provides the possibility of a model calibration to market prices the garch stable option pricing model allows the explanation of some well known anomalies in empirical data as volatility clustering and heavy tailedness of the return distribution finally the results of monte carlo simulations concerning the option price and the implied volatility with respect to different strike and maturity levels are presented

selection on observed and unobserved variables assessing the effectiveness of catholic schools in this paper we measure the effect of catholic high school attendance on educational attainment and test scores because we do not have a good instrumental variable for catholic school attendance we develop new estimation methods based on the idea that the amount of selection on the observed explanatory variables in a model provides a guide to the amount of selection on the unobservables we also propose an informal way to assess selectivity bias based on measuring the ratio of selection on unobservables to selection on observables that would be required if one is to attribute the entire effect of catholic school attendance to selection bias we use our methods to estimate the effect of attending a catholic high school on a variety of outcomes our main conclusion is that catholic high schools substantially increase the probability of graduating from high school and more tentatively attending college we find little evidence of an effect on test scores

on the social efficiency of conflict abstract in sharp contrast with the economic literature on conflict this paper shows that confrontation may be efficiency enhancing conditions are derived under which a contest over the exclusive control of a resource pareto dominates peaceful access

when arm s length is too far relationship banking over the credit cycle we conduct face to face interviews with bank ceos to classify 397 banks across 21 countries as either relationship or transaction lenders we then use the geographic coordinates of these banks branches and of 14 100 businesses to analyze how the lending techniques of banks in the vicinity of firms are related to credit constraints at two contrasting points of the credit cycle we find that while relationship lending is not associated with credit constraints during a credit boom it alleviates such constraints during a downturn this positive role of relationship lending is stronger for small and opaque firms and in regions with a more severe economic downturn moreover our evidence suggests thatrelationship lending mitigates the impact of a downturn on firm growth and does not constitute evergreening of loans

the role of social capital in financial development to identify the effect of social capital on financial development we exploit social capital differences within italy in high social capital areas households are more likely to use checks invest less in cash and more in stock have higher access to institutional credit and make less use of informal credit the effect of social capital is stronger where legal enforcement is weaker and among less educated people these results are not driven by omitted environmental variables since we show that the behavior of movers is still affected by the level of social capital of the province where they were born

trust social capital and economic development many argue that elements of a society s norms culture or social capital are central to understanding its development however these notions have been difficult to capture in economic models here we explore ap ossible role for trustworthiness as corresponding to social capital individuals are trustworthy when they perform in accordance with promises even if this does not maximize their payoffs the usual focus on incentive structures in motivating behaviour plays no role here instead we emphasize more deep seated modes of behaviour and consider trustworthy agents being socialized to act as they do to model this socialization we borrow from a process of preference evolution pioneered by bisin and verdier 2001 the model developed endogenously accounts for social capital and explores its role in the process of economic development it captures in a simple formal way the interaction between social capital and the economy s productive processes the results obtained caution against rapid reform and provide an explanation for why late developing countries may not easily be able to transplant the modes of production that have proved useful in the west

a closed form garch option valuation model this paper develops a closed form option valuation formula for a spot asset whose variance follows a garch p q process that can be correlated with the returns of the spot asset it provides the first readily computed option formula for a random volatility model that can be estimated and implemented solely on the basis of observables the single lag version of this model contains heston s 1993 stochastic volatility model as a continuous time limit empirical analysis on s p500 index options shows that the out of sample valuation errors from the single lag version of the garch model are substantially lower than the ad hoc black scholes model of dumas fleming and whaley 1998 that uses a separate implied volatility for each option to fit to the smirk smile in implied volatilities the garch model remains superior even though the parameters of the garch model are held constant and volatility is filtered from the history of asset prices while the ad hoc black scholes model is updated every period the improvement is largely due to the ability of the garch model to simultaneously capture the correlation of volatility with spot returns and the path dependence in volatility article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

protests and trust in the state evidence from african countries this paper provides empirical evidence that after protests citizens substantially revise their views on the current leader but also their trust in the country s institutions the empirical strategy exploits variation in the timing of an individual level survey and the proximity to social protests in 13 african countries first we find that trust in political leaders strongly and abruptly decreases after protests second trust in the country monitoring institutions plunges as well both effects are much stronger when protests are repressed by the government as no signs of distrust are recorded even a couple of days before the social conflicts protests can be interpreted as sudden signals sent on a leaders actions from which citizens extract information on their country fundamentals

time series analysis for financial market meltdowns abstract there appears to be a consensus that the recent instability in global financial markets may be attributable in part to the failure of financial modeling more specifically it is alleged that current risk models have failed to properly assess the risks associated with large adverse stock price behavior in this paper we first discuss the limitations of classical time series models for forecasting financial market meltdowns then we set forth a framework capable of forecasting both extreme events and highly volatile markets based on the empirical evidence presented in this paper our framework offers an improvement over prevailing models for evaluating stock market risk exposure during distressed market periods

schooling violent conflict and gender in burundi this paper investigates the effect of exposure to violent conflict on human capital accumulation in burundi it combines a nationwide household survey with secondary sources on the location and timing of the conflict only 20 percent of the birth cohorts studied 1971 1986 completed primary education depending on the specification the probability of completing primary schooling for a boy exposed to violent conflict declines by 7 to 17 percentage points compared to a nonexposed boy with a decline of 11 percentage points in the preferred specification in addition exposure to violent conflict reduces the gender gap in schooling but only for girls from nonpoor households forced displacement is one of the channels through which conflict affects schooling the results are robust to various specifications and estimation methods

inattentive professional forecasters abstract using the ecb survey of professional forecasters to characterize expectations at the micro level we emphasize two new facts forecasters i fail to systematically update their forecasts and ii disagree even when updating it is moreover found that forecasters have predictable forecast errors these facts are qualitatively supportive of recent models of inattention and suggest a setup where agents imperfectly process information due to both sticky information a la mankiw reis and noisy information a la sims however building and estimating such an expectation model we find that it cannot quantitatively replicate the error and disagreement observed in the data

nonlinear permanent temporary decompositions in macroeconomics and finance we suggest a method of decomposing univariate and multivariate nonlinear processes into their permanent and temporary components extending the analysis of beveridge and nelson 1981 and stock and watson 1987 we provide applications in the univariate nonlinear case to recent work on nonlinearities in the us business cycle and in the multivariate nonlinear case to recent work on asymmetric nonlinear adjustment in the term structure of interest rates for the us the business cycle results suggest that the method may be particularly useful in future research on output fluctuations

the fine structure of asset returns an empirical investigation we investigate the importance of diffusion and jumps in a new model for asset returns in contrast to standard models we allow for jump components displaying finite or infinite activity and variation empirical investigations of time series indicate that index dynamics are devoid of a diffusion component which may be present in the dynamics of individual stocks this leads to the conjecture confirmed on options data that the risk neutral process should be free of a diffusion component we conclude that the statistical and risk neutral processes for equity prices are pure jump processes of infinite activity and finite variation

child health and conflict in cote d ivoire we examine the impact of the 2002 07 civil conflict in cote d ivoire on children s health status measured by height for age we use pre and post war survey data coupled with information on the location of violent incidents to capture exposure to the conflict of children born during 1997 2007 our results indicate that children from regions more affected by the conflict suffered significant health setbacks compared with children from less affected regions further household level victimization such as war related economic stress health stress and displacement has a large and negative effect on child health in conflict affected regions

does foreign aid target the poorest to examine the extent to which foreign aid reaches people at different levels of wealth in africa i use household surveys to measure the subnational distribution of a country s population by wealth quintiles and match this information to data on the location of aid projects from two multilateral donors within countries aid disproportionately flows to regions with more of the richest people aid does not favor regions with more of the poorest people these findings violate the stated preferences of the multilateral donors under study suggesting that the donors either cannot or are not willing to exercise control over the location of aid projects within countries the results also suggest that aid is not being allocated effectively to alleviate extreme poverty

social capital and growth we define and characterize social capital in a simple growth model we capture social capital in a model where individuals in a community maximize their lifetime gains to trade each trade between two members of a community has the structure of the prisoners dilemma trades are repeated indefinitely but not necessarily each period social capital is defined as the social structure which facilitates cooperative trade as an equilibrium the trading model is incorporated into a growth model to explore the connections between growth labor mobility and social capital the key assumption is that technological innovation which drives growth involves a reallocation of labor that affects social capital modifying the responsiveness of labor to a technological shock has implications for both labor efficiency and social capital

not just a work permit eu citizenship and the consumption behavior of documented and undocumented immigrants this paper explores the impact of the 2007 european union enlargement on the consumption behavior of immigrant households using data from a unique italian survey and a difference in differences approach we find that the enlargement induced a significant consumption increase for the immigrant households from new member states both in the short and in the medium run this enlargement effect cannot be attributed to the mere legalization as it concerns both undocumented and documented immigrants albeit through different channels detailed information on immigrants legal status undocumented documented and sector of employment informal formal allows us to shed light on the exact mechanisms following the enlargement previously undocumented immigrants experienced an increase in the labor income by moving from the informal towards the formal economy whereas immigrants who were already working legally in italy benefitted from the increased probability of getting a permanent contract enhanced employment stability in turn reduced the uncertainty about future labor income leading to an increase in documented immigrants consumption expenditure

technology utilization and inflation what drives the new keynesian phillips curve we argue that the new keynesian phillips curve literature has failed to deliver a convincing measure of real marginal costs we start from a careful modeling of optimal price setting allowing for nonunitary factor substitution nonneutral technical change and time varying factor utilization rates this ensures the resulting real marginal cost measures match volatility reductions and level changes witnessed in many u s time series the cost measure comprises conventional countercyclical cost elements plus procyclical and covarying utilization rates although procyclical elements seem to dominate the components of real marginal cost components are becoming less cyclical over time incorporating this richer driving variable produces more plausible price stickiness estimates than otherwise and suggests a more balanced weight of backward and forward looking inflation expectations than commonly found our results challenge existing views of inflation determinants and have important implications for modeling inflation in new keynesian models

war and local collective action in sierra leone abstract we study the brutal 1991 2002 sierra leone civil war using nationally representative household data on conflict experiences postwar economic outcomes local politics and collective action individuals whose households directly experienced more intense war violence are robustly more likely to attend community meetings more likely to join local political and community groups and more likely to vote tests using prewar controls and alternative samples suggest that selection into victimization is unlikely to be driving the results more speculatively the findings could help partially explain the rapid postwar political and economic recoveries observed in sierra leone and after several other recent african civil wars

estimating and accounting for the output gap with large bayesian vector autoregressions we consider how to estimate the trend and cycle of a time series such as real gross domestic product given a large information set our approach makes use of the beveridge nelson decomposition based on a vector autoregression but with two practical considerations first we show how to determine which conditioning variables span the relevant information by directly accounting for the beveridge nelson trend and cycle in terms of contributions from different forecast errors second we employ bayesian shrinkage to avoid overfitting in finite samples when estimating models that are large enough to include many possible sources of information an empirical application with up to 138 variables covering various aspects of the us economy reveals that the unemployment rate inflation and to a lesser extent housing starts aggregate consumption stock prices real money balances and the federal funds rate contain relevant information beyond that in output growth for estimating the output gap with estimates largely robust to substituting some of these variables or incorporating additional variables

leviathan as an inventor an extended agency model of state owned versus private firm invention in emerging and developed economies we examine the relative merits of state soe and private poe ownership on firm invention output in emerging as well as developed economies firm soe affords a vehicle by which governments throughout the world encourage risky investment in new technological paths yet from a traditional agency theoretical standpoint soes are plagued by low powered incentives and dysfunctional involvement e g wasteful budgets and political meddling which reduces soe performance relative to poes to examine this paradox we build an extended agency model which rather than overlooking agency cost drivers entertains a more balanced view in which these so called agency liabilities in fact benefit soes particularly in the sphere of inventions we argue that given relatively higher levels of managerial autonomy soes may outperform poes in some types of inventive output we further propose that key boundary conditions operate to modify this base effect in that contexts lacking political constraints a condition found in most emerging economies increase the risk of political meddling reducing managerial autonomy so that any soe inventive advantages wane significantly we also hypothesize that this negative effect of weak institutions is attenuated in high invention productivity sectors empirically we track the frequency pioneerism and impact of patent inventions of 521 soes and matched poes for 16 years across 43 countries and 22 industries we find empirical support for our hypotheses based on a robust set of fixed effects regression analyses aided by a battery of checks to assess self selection and omitted variable bias

income and livelihoods in the war in afghanistan we explore the impact of the insurgency and military deployment on the livelihoods of local communities in afghanistan we use monthly wages and commodity prices at the provincial level over the period 2003 09 and look for their response to conflict events and isaf deployment overall we find that prices are more sensitive to deployment than to attacks commodity prices are not significantly affected by insurgent violence which is consistent with coping strategies already in place on the opposite military deployment is associated with an increase in the levels of wages and commodity prices as isaf is a new source of uncertainty

culture legal origins and financial development this study proposes that countries with a cultural orientation toward individualism tend to enjoy a higher level of financial development estimates based on cross country data lend strong support to this hypothesis specifically the results indicate that existing disparity in the level of financial development is significantly correlated with variation in the extent of individualism across countries where a one standard deviation increase in individualism is associated with 0 631 standard deviations improvement in the level of financial development the results are robust to a number of considerations additional results provide some support to the notion that individualistic culture and legal origin may serve as complements rather than substitutes to each other jel o40 o50 z10

identifying the new keynesian phillips curve phillips curves are central to discussions of inflation dynamics and monetary policy the hybrid new keynesian phillips curve nkpc describes how past inflation expected future inflation and a measure of real aggregate demand drive the current inflation rate this paper studies the potential weak identification of the nkpc under generalized method of moments and traces this syndrome to a lack of higher order dynamics in exogenous variables we employ analytic methods to understand the economics of the nkpc identification problem in the canonical three equation new keynesian model we revisit the empirical evidence for the usa the uk and canada by constructing tests and confidence intervals based on the anderson and rubin 1949 statistic which is robust to weak identification we also apply the guggenberger and smith 2008 lm test to the underlying nkpc pricing parameters both tests yield little evidence of forward looking inflation dynamics copyright 2008 john wiley sons ltd

macroeconomic expectations of households and professional forecasters economists have long emphasized the importance of expectations in determining macroeconomic outcomes yet there has been almost no recent effort to model actual empirical expectations data instead m acroeconomists usually simply assume that expectations are rational this paper shows that while empirical household expectations are not rational in the usual sense expectational dynamics are well captured by a model in which households views derive from news reports of the views of professional forecasters which in turn may be rational the model s estimates imply that people only occasionally pay attention to news reports this inattention generates stickyness in aggregate expectations with important macroeconomic consequences

respect responsibility and development abstract we develop a theory that explains how two core values respect for others and responsibility affect productivity the accumulation of capital and output per worker using data from the world values survey we empirically test the model using a panel dataset that includes 82 countries over six distinct years we find that these two core values are important to production and that their impact is substantial we also show that respect and responsibility reduce the influence of trust and mitigate the negative macroeconomic effects associated with fractionalized societies our results are robust to various treatments for endogeneity and under alternative samples

social capital conflict and welfare abstract this paper analyzes the role of external conflict as a force that can create social capital hostile inter group interactions can help to resolve intra group social dilemmas but these potential gains must be weighed against the insecurity of hostile relations with an out group our central result is that the presence of an outside threat can induce higher levels of social capital either because a protective aspect of social capital comes into play and or as a reallocation of investments from private to social capital given that social capital is potentially subject to free riding the threat by promoting a greater level of social capital can be welfare improving when the threat is severe social capital and welfare are more likely to fall this effect of an external threat on social capital is stronger in poor economies these results can shed light on the sometimes contradicting empirical evidence on the relationship between conflict and social capital

european inflation dynamics abstract we provide evidence on the fit of the new phillips curve npc for the euro area over the period 1970 1998 and use it as a tool to compare the characteristics of european inflation dynamics with those observed in the u s we also analyze the factors underlying inflation inertia by examining the cyclical behavior of marginal costs as well as that of its two main components namely labor productivity and real wages some of the findings can be summarized as follows a the npc fits euro area data very well possibly better than u s data b the degree of price stickiness implied by the estimates is substantial but in line with survey evidence and u s estimates c inflation dynamics in the euro area appear to have a stronger forward looking component i e less inertia than in the u s d labor market frictions as manifested in the behavior of the wage markup appear to have played a key role in shaping the behavior of marginal costs and consequently inflation in europe

the violent legacy of conflict evidence on asylum seekers crime and public policy in switzerland we study empirically how past exposure to conflict in origin countries makes migrants more violence prone in their host country focusing on asylum seekers in switzerland we exploit a novel and unique dataset on all crimes reported in switzerland by the nationalities of perpetrators and of victims over 2009 2016 our baseline result is that cohorts exposed to civil conflict mass killing during childhood are 35 percent more prone to violent crime than the average cohort this effect is particularly strong for early childhood exposure and is mostly confined to co nationals consistent with inter group hostility persisting over time we exploit cross region heterogeneity in public policies within switzerland to document which integration policies are best able to mitigate the detrimental effect of past conflict exposure on violent criminality we find that offering labor market access to asylum seekers eliminates two thirds of the effect

employment risk and job seeker performance using detailed labor recruitment data in combination with randomized variation in individuals outside job opportunities i show that providing job certainty during recruitment leads to substantial job seeker performance gains job seeker performance is highest and effort lowest among those assigned to receive a guaranteed outside job offer where employment risk is eliminated while performance is lowest and effort highest among those receiving no chance of an outside job offer performance among those assigned uncertain outside job offers consistently lies between the two extremes i conjecture that the pattern of results is most consistent with stress induced performance reductions attributable to job uncertainty i rule out several other competing theories

cvar sensitivity with respect to tail thickness abstract the sensitivity of a risk measure with respect to the parameters of the hypothesized distribution is a useful tool in investigating the impact of marginal rebalancing decisions on the portfolio return distribution and also in the analysis of the asymptotic variability of the risk estimator we calculate the relative importance of the conditional value at risk cvar sensitivity with respect to tail thickness and scale of the portfolio return distribution in the case of regularly varying tails and in the case of exponential and faster than exponential decay we discuss the implications for asset return modeling and the asymptotic variability of the risk estimator

on estimating the effects of immigrant legalization do u s agricultural workers really benefit the question of whether legalization affects immigrants economic returns has been the focus of many empirical studies in recent decades results have consistently shown that there are significant wage differences between legal and illegal workers however the validity of such findings has been questioned given the lack of good identification strategies to account for omitted variables in this article we propose using techniques designed to address the issue of selection into treatment based to some degree on unobservables our results suggest that lower skill levels not discrimination explain differences in immigrants economic outcomes in recent decades the united states has experienced a substantial increase in the number of undocumented immigrants entering the country as well as documented immigrants overstaying their legally permitted time passel 2005 according to estimates provided by passel and cohn 2009 the united states is now home to approximately 12 million unauthorized immigrants this phenomenon has caused dramatic changes in the agricultural workforce with the ratio between undocumented and legal farm workers rising from only 16 in the period 1989 92 to 36 in 1993 95 and 50 in 1998 2000 iway emerson and walters 2006 in an attempt to control this flow of illegal immigrants the u s government proposed several changes to its immigration policy it not only increased border security but also introduced sanctions for u s employers that hire unauthorized workers and launched several amnesty programs such as the 1986 immigration reform and control act irca and the comprehensive immigration reform act of 2006 cira both of which allow agricultural workers to acquire legal permanent residence status

information animal spirits and the meaning of innovations in consumer confidence we show that unexplained innovations in several variables representing survey responses to forwardlooking questions on the michigan survey of consumers have powerful prognostic implications for the future paths of macroeconomic variables we attempt to distinguish the hypothesis that these impulse responses indicate a causal channel from autonomous movements in sentiment to economic outcomes the animal spirits view from the alternative interpretation that the surprise confidence movements summarize information about future economic prospects the information view in natural rate models animal spirits shocks are associated with overshooting of among other variables consumption that attenuates when agents come to grips with their overreaction while information shocks about the long future are followed by gradual movements in macroeconomic variables that are not subsequently reversed in a baseline vector autoregression involving consumption income and confidence the data come down sharply in favor of the information view the impulse responses of consumption and gdp show no tendency to attenuate even after a number of years further confidence innovations have strong implications for labor productivity many quarters into the future in somewhat larger vars with an information block that includes inflation and or stock prices the impulse responses to confidence innovations continue to have the permanent shape that defines information shocks but they are smaller in magnitude we demonstrate that this is due to the fact that both inflation and stock price innovations have prognostic implications for future productivity that are very similar to the implications of innovations in confidence addition of unemployment to the system induces a transitory component that changes the shape of the impulse responses and somewhat weakens the previously airtight case against animal spirits but it does not provide constructive evidence of such effects

swords or plowshares a theory of the security of claims to property this paper develops a general equilibrium model of the allocation of resources among appropriative and productive activities the model emphasizes the distinction between offensive weapons which are the instruments of predation and fortifications which provide defense against predation the analysis of this model shows how the equilibrium security of claims to property is determined the analysis focuses on the possibility of a nonaggressive equilibrium in which no resources are allocated to offensive weapons and claims to property are fully secure we also analyze the complex relation between economic welfare and the security of claims to property we find for example that a relatively poor agent could be better off in an equilibrium with less secure claims to property

estimating the distortionary effects of ethnic quotas in singapore using housing transactions abstract desegregation is a key policy issue in many countries i investigate a residential desegregation program in singapore the ethnic housing quotas i show that choice restrictions imposed on apartment blocks above the quota limits constrained could have distortionary effects causing price and quantity differences for constrained versus unconstrained blocks i test these predictions by hand matching more than 500 000 names in the phonebook to ethnicities to calculate ethnic proportions at the apartment block level i can then investigate differences for constrained and unconstrained blocks close to the quota limits and test for sorting around the limits i find that price differences are between 3 and 5 quantity effects are economically significant translating to longer time on market durations selection cannot fully explain these results my results point to challenges in achieving desegregation using quantity restrictions

skill transferability migration and development evidence from population resettlement in indonesia we use a natural experiment in indonesia to provide causal evidence on the role of location specific human capital and skill transferability in shaping the spatial distribution of productivity from 1979 1988 the transmigration program relocated two million migrants from rural java and bali to new rural settlements in the outer islands villages assigned migrants from regions with more similar agroclimatic endowments exhibit higher rice productivity and nighttime light intensity one to two decades later we find some evidence of migrants adaptation to agroclimatic change overall our results suggest that regional productivity differences may overstate the potential gains from migration

mining away the preston curve summary i estimate the long term national health and education impacts of having a larger mining share in the economy by instrumenting the relative size of the mining sector with the natural geological variation in countries fossil fuel endowments i provide evidence suggestive of a causal relationship the findings suggest that countries with larger mining shares tend to have poorer health and education outcomes than countries with similar per capita incomes geographic characteristics and institutional quality doubling the mining share of an economy corresponds to on average the infant death rate being 20 higher life expectancy being 5 lower total years of education being 20 lower and 70 more people having no formal education divergences from the preston curve the concave relationship between cross country income and life expectancy that has long been of interest to economists demographers and epidemiologists are thus partly explained by the size of the mining sector within country evidence from indonesia paints a similar picture my results provide support for a growing body of evidence linking mining to poorer average living standards particularly vis a vis other types of income i also estimate the effects of national mining dependence on non mining income health and education investment and institutions

out of the ashes into the fire the consequences of u s weapons sales for political violence abstract we examine the effect of u s weapons purchases on political violence in 191 countries during the period 1970 2008 our identification strategy exploits exogenous shifts in the cost of purchasing u s commercial weapons through a combination of time variation in u s inflation and cross sectional variation in a country s historical frequency of purchases we find that weapons purchases reduce the likelihood of political repression but increase the likelihood of onset of civil war in purchasing countries the results suggest that state investment in military capability incites civil war in countries where state repression of an aggrieved opposition would have otherwise prevailed