education poverty and terrorism is there a causal connection the paper investigates whether there is a connection between poverty or low education and terrorism we review evidence on hate crimes which are closely related to terrorism the occurrence of hate crimes is largely independent of economic conditions we analyze data on support for attacks against israeli targets from public opinion polls conducted in the west bank and gaza strip support for violent attacks does not decrease among those with higher education and higher living standards the core contribution of the paper is a statistical analysis of the determinants of participation in hezbollah militant activities having a living standard above the poverty line or a secondary or higher education is positively associated with participation in hezbollah we also find that israeli jewish settlers who attacked palestinians in the west bank in the early 1980s were overwhelmingly from high paying occupations although our results are tentative and exploratory they suggest that neither poverty nor education has a direct causal impact on terrorism

using ols to estimate and test for structural changes in models with endogenous regressors summary we consider the problem of estimating and testing for multiple breaks in a single equation framework with regressors that are endogenous i e correlated with the errors we show that even in the presence of endogenous regressors it is still preferable in most cases to simply estimate the break dates and test for structural change using the usual ordinary least squares ols framework except for some knife edge cases it delivers estimates of the break dates with higher precision and tests with higher power compared to those obtained using an instrumental variable iv method also the ols method avoids potential weak identification problems caused by weak instruments to illustrate the relevance of our theoretical results we consider the stability of the new keynesian hybrid phillips curve iv based methods only provide weak evidence of instability on the other hand ols based ones strongly indicate a change in 1991 q1 and that after this date the model loses all explanatory power copyright 2013 john wiley sons ltd

a natural experiment on sick pay cuts sickness absence and labor costs abstract this study estimates the reform effects of a reduction in statutory sick pay levels on sickness absence behavior and labor costs german federal law reduced the legal obligation of german employers to provide 100 continued wage pay for up to six weeks per sickness episode in 1996 statutory sick pay was decreased to 80 of foregone gross wages within the reform s target group private sector employees this measure increased the proportion of employees having zero days of absence between 6 and 8 quantile regression estimates indicate that employees with up to 5 5 annual absence days reduced their days of absence by about 12 extended analyses suggest that in industries that enforced the cut behavioral effects were about twice as large we show that the direct labor cost savings effect stemming from the cut in replacement levels clearly exceeds the indirect effect due to the decrease in absenteeism our calculations about the total decrease in labor costs are very much in line with official data which suggest that total employer provided sick pay decreased by 6 7 or 1 7 billion per year

choice under uncertainty a model of applications for the social security disability insurance program abstract not all people with health problems are disabled some individuals with severe physical or mental impairments such as blindness or limb amputation continue to hold jobs and generally function satisfactorily they constitute however a group of potentially disabled individuals who might apply and qualify for disability insurance or other disability related benifits if they were to lose their jobs or to decide that employment offered an inadequate financial or non pecuniary reward thus disability or a health related inability to work is more than a medical problem but involves motivational and attitudinal factors we specify a model of the application process which we model as choice under uncertainty about approval of an application for disability insurance we specify the possible outcomes to the choice process of an individual in which the probability of acceptance for disability insurance is a key consideration we then estimate a joint model of labor supply and application to the disability insurance program based on the 1972 survey we then compare our results to the observed time series applications process since 1976 lastly we estimate the sensitivity of the application process to the probability of acceptance and the level of benifits

witchcraft weather and economic growth in renaissance europe between the thirteenth and nineteenth centuries as many as one million individuals in europe were executed for the crime of witchcraft the majority of the trials and executions took place during the sixteenth and seventeenth centuries during this period the speed and volume of executions were astonishing in one german town as many as 400 people were killed in a single day midelfort 1972 the trials were ubiquitous conducted by both ecclesiastical and secular courts by both catholics and protestants the victims were primarily women primarily poor and disproportionately widows the persecutions took place throughout europe starting and ending earlier in southwest europe than in the northern and eastern areas and spread even across the atlantic ocean to salem massachusetts although witchcraft trials in europe and america largely ended by the late eighteenth century witchcraft accusations and killings still take place in many countries today particularly in the developing world for example witchcraft is often blamed for aids deaths in sub saharan africa ashforth 2001 and miguel 2003 shows that negative economic shocks are associated with increases in witch killing in modern tanzania belief in the witch and fear of her is enduring while much work has been done on the motivations behind the european trials the large scale causes remain unknown the existing work has primarily been concerned with the factors that played into trials on a small scale why a certain individual was targeted or why a certain type of individual was targeted in a given area this work has indicated that there was a diverse set of issues that played into trials on an individual level more broadly however there are few causal explanations for why witchcraft trials happened at all and on such a large scale in so many

why has u s inflation become harder to forecast we examine whether the u s rate of price inflation has become harder to forecast and to the extent that it has what changes in the inflation process have made it so the main finding is that the univariate inflation process is well described by an unobserved component trend cycle model with stochastic volatility or equivalently an integrated moving average process with time varying parameters this model explains a variety of recent univariate inflation forecasting puzzles and begins to explain some multivariate inflation forecasting puzzles as well

sacrifice and stigma reducing free riding in cults communes and other collectives this paper presents an economic analysis of religious behavior that accounts for the continuing success of groups with strange requirements and seemingly inefficient prohibitions the analysis does not presuppose any special motives for religious activity rather religion is modeled as a club good that displays positive returns to participatory crowding the analysis demonstrates that efficient religions with perfectly rational members may benefit from stigma self sacrifice and bizarre behavioral restrictions the model also addresses sacrifice in nonreligious social clubs fraternities communes political parties work groups and families

long term and spillover effects of health shocks on employment and income abstract we use matching combined with difference in differences to identify the causal effects of sudden illness represented by acute hospitalizations on employment and income up to six years after the health shock using linked dutch hospital and tax register data an acute hospital admission lowers the employment probability by seven percentage points and results in a 5 percent loss of personal income two years after the shock there is no subsequent recovery in either employment or income there are large spillover effects household income falls by 50 percent more than the income of the disabled person

assessing the effect of public policy on worker absenteeism we analyze the effect of economic incentives on worker absenteeism using panel data on work absence for 1990 and 1991 with a sample of 1 396 swedish blue collar workers during this period sweden implemented major reforms of both its national income replacement program for short term sickness and income taxes both affected the worker s cost of missing work our econometric model allows for state dependent dynamic behavior and control for unobserved heterogeneity the latter proves to be an important consideration we find that the cost of being absent significantly affects work absence behavior

immigration policy and counterterrorism abstract in a developing country terrorists recruit and allocate their capital skilled labor and unskilled labor between domestic and foreign targets domestic targets require less skilled labor than foreign targets under various strategic scenarios we show how countermeasures against the different terrorist inputs alter the amount and mix of targets as well as how skilled and unskilled immigration quotas by a targeted foreign country affect this mix of attacks we find that increases in skilled labor quotas generally reduce terrorist attacks in the foreign country especially when the terrorists reside in a skill scarce country a number of different strategic scenarios including leader follower are investigated

terrorist group survival ideology tactics and base of operations the paper applies survival analysis to identify the determinants of terrorist group duration our sample includes 367 terrorist organizations that operated during 1970 2007 consistent with the theory determinants of these groups survival include their tactics sizes ideological basis regions of operation and base country characteristics cross sectional and panel estimates are reported terrorist organizations fare better if they are larger in size diversify their attack modes are animated by religiosity rather than secular political goals and base their operations in the middle east or africa groups longevity is bolstered by democratic institutions and an intermediate level of ethnic fractionalization at home

the rise in the disability rolls and the decline in unemployment between 1984 and 2001 the share of nonelderly adults receiving social security disability insurance income di rose by 60 percent to 5 3 million beneficiaries rapid program growth despite improving aggregate health appears to be explained by reduced screening stringency declining demand for less skilled workers and an unforeseen increase in the earnings replacement rate we estimate that the sum of these forces doubled the labor force exit propensity of displaced high school dropouts after 1984 lowering measured u s unemployment by one half a percentage point steady state calculations augur a further 40 percent increase in the rate of di receipt

robust monetary policy structural breaks and nonlinearities in the reaction function of the central bank of brazil abstract in this work we seek to investigate the existence of nonlinearities in the reaction function of the central bank of brazil arising from this policymaker s uncertainties about the effects of the output gap on inflation theoretically we follow tillmann 2011 to obtain a nonlinear optimal monetary policy rule that is robust to uncertainty about the output inflation trade off of the phillips curve in addition we perform structural break tests to assess possible changes in the conduct of the brazilian monetary policy during the inflation targeting regime the results indicate that i the uncertainties about the slope in the phillips curve implied nonlinearities in the central bank of brazil s reaction function ii we cannot reject the hypothesis of a structural break in the monetary rule parameters occurring in the third quarter of 2003 iii there was an increase in the response of the selic rate to output gap and a weaker response to the current inflation gap in meirelles tombini s administration and iv the central bank of brazil has also reacted to the exchange rate in meirelles tombini s administration

the rise and fall of disability insurance enrollment in the netherlands as recently as 15 years ago the high level of disability insurance di enrollment was considered to be one of the major social and economic problems of the netherlands indeed the netherlands was characterized as the country with the most out of control disability program of oecd countries but since about 2002 the netherlands has seen a spectacular decline in its disability insurance enrollment rate radical reforms to the dutch di system were implemented over the period 1996 to 2006 we cluster these reforms in three broad categories 1 reducing the incentives of employers to move workers to disability 2 increased gatekeeping and 3 tightening disability eligibility criteria while enhancing worker incentives the reforms appear to have been very effective since 2002 yearly di inflow rates dropped from 1 5 percent in 2001 to about 0 5 percent of the insured population in 2012 we argue that particularly the interaction of employer incentives and formal employer obligations has contributed to the substantial decrease in di inflow on the downside however it seems workers with bad health have sorted into temporary employment without employers bearing the financial responsibility of their benefit costs

racial harassment ethnic concentration and economic conditions in this paper we analyse the association between the spatial concentration of ethnic minorities and racial harassment ethnic concentration relates to racial harassment through at least three channels hostility in the attitudes of majority individuals that finds expression in harassment behaviour the probability that minority individuals meet majority individuals and the cost of expressing hostility aggressively thus harassment cannot simply be modelled as a stronger form of hostility using unique data for britain we show that in areas of higher local ethnic concentration experience of harassment is lower even though hostility on the side of the majority population is not

poverty political freedom and the roots of terrorism this article provides an empirical investigation of the determinants of terrorism at the country level in contrast with the previous literature on this subject which focuses on transnational terrorism only i use a new measure of terrorism that encompasses both domestic and transnational terrorism in line with the results of some recent studies this article shows that terrorist risk is not significantly higher for poorer countries once the effects of other country specific characteristics such as the level of political freedom are taken into account political freedom is shown to explain terrorism but it does so in a non monotonic way countries in some intermediate range of political freedom are shown to be more prone to terrorism than countries with high levels of political freedom or countries with highly authoritarian regimes this result suggests that as experienced recently in iraq and previously in spain and russia transitions from an authoritarian regime to a democracy may be accompanied by temporary increases in terrorism finally the results suggest that geographic factors are important to sustain terrorist activities this abstract was borrowed from another version of this item

disability insurance benefits and labor supply a critical input for assessing the optimal size of disability insurance programs is the elasticity of labor force participation with respect to the generosity of benefits unfortunately this parameter has been difficult to estimate in the context of the u s disability insurance program since all workers face an identical benefits schedule i surmount this problem by studying the experience of canada which operates two distinct disability insurance programs for quebec and for the rest of canada the latter program raised its benefits by 36 percent in january 1987 whereas benefits in quebec were constant i find a sizable labor supply response to the policy change my central estimates imply an elasticity of labor force nonparticipation with respect to disability insurance benefits of 0 28 0 36

human capital and the productivity of suicide bombers the authors empirical analysis suggests that older and more educated suicide bombers are being assigned by their terror organization to more important targets they find that more educated and older suicide bombers are less likely to fail in their mission and are more likely to cause increased casualties when they attack

the economic returns to schooling in the west bank and gaza strip the author uses micro data from the labor force surveys conducted in the west bank and the gaza strip during 1981 91 to show that during 1981 87 wage differences between schooling groups fell by well over one half this sharp reduction is associated with large increases in the size of the educated palestinian labor force since the returns to schooling for israeli jews were stable the decline in returns to schooling for palestinians is consistent with the notion that the returns to schooling in the territories were determined largely by the forces of supply and demand in a segmented market for skilled labor copyright 1995 by american economic association

religion terrorism and public goods testing the club model abstract can rational models once theological explanations are discredited explain why certain radical religious rebels are so successful in perpetrating suicide attacks the fundamental barrier to success turns out not to be recruiting suicide attackers there is a rational basis for volunteering rather the barrier is the danger of other operatives defecting a club model portraying voluntary religious organizations as efficient providers of local public goods explains how they weed out potential defectors by requiring sacrifices as signals of commitment they are thereby able to succeed in risky terrorist attacks the model has testable implications for tactic choice and damage achieved by clubs and other rebel organizations data spanning a half century on both terrorists and civil war insurgents much from middle east sources and israel palestine reveal that a missions organized by radical religious clubs that provide benign local public goods are both more lethal and are more likely to be suicide attacks than missions organized by other terrorist groups with similar aims and theologies and b suicide attacks are chosen when targets are hard i e difficult to destroy our results suggest benign tactics to counter radical religious terrorism and insurgency

does terrorism work this paper examines whether terrorism is an effective tool for achieving political goals by exploiting geographic variation in terror attacks in israel from 1988 to 2006 we show that local terror attacks cause israelis to be more willing to grant territorial concessions to the palestinians these effects are stronger for demographic groups that are traditionally right wing in their political views however terror attacks beyond a certain threshold cause israelis to adopt a less accommodating position in addition terror induces israelis to vote increasingly for right wing parties as the right wing parties move to the left in response to terror hence terrorism appears to be an effective strategy in terms of shifting the entire political landscape to the left although we do not assess whether it is more effective than non violent means

integrating retirement and permanent disability in ndc pension schemes abstractin this article we develop a theoretical basis for integrating retirement and permanent disability using a generic nonfinancial defined contribution framework the methodology we use relies on a multistate overlapping generations model that includes the so called survivor dividend currently this feature can only be found in the swedish defined contribution dc scheme the results achieved in the numerical example we present endorse the fact that the model works well special attention is given to the assumptions made about mortality rates for disabled people and disability incidence rates which largely determine the contribution rate assigned to disability the model could be of interest to policymakers because after some adaptations it could be implemented without too much difficulty and would uncover the real cost of disability and minimize the risk of disability insurance being used as a vote buying mechanism

disability retirement and unemployment substitute pathways for labour force exit an empirical test for the case of germany this paper studies the determinants of disability retirement and unemployment of older workers two labour market phenomena which the german public discussion combines under the label of early retirement the implicit assumption that these two mechanisms are exchangeable pathways into permanent retirement is tested using panel data the transition rates from employment into disability retirement and into unemploymentare estimated and compared statistical tests reject the hypothesis that disability retirement and unemployment are substitutes

large versus small foreign exchange interventions abstract we use non temporal threshold analysis to investigate the exchange rate effects of large versus small interventions more than two decades of official daily data on intervention in the jpy usd market facilitate our analysis we find no evidence that small interventions exert a discernible influence on the exchange rate while large interventions significantly influence the exchange rate in the theoretically consistent manner we conclude that small interventions may not be considered a determinant of the exchange rate while large interventions constitute an important element in our understanding and modeling of the exchange rate

the impact of stricter criteria for disability insurance on labor force participation this paper studies the effect of a large scale policy change in the austrian disability insurance program which tightened eligibility criteria for men above a certain age using administrative data on the universe of austrian private sector employees the results of difference in difference regressions suggest a substantial and statistically significant decline in disability enrollment of 6 to 7 4 percentage points and an increase in employment of 1 6 to 3 4 percentage points the policy change had important spillover effects into the unemployment and sickness insurance program specifically the share of individuals receiving unemployment benefits increased by 3 5 to 3 9 percentage points and the share receiving sickness insurance benefits by roughly 0 7 percentage points

disability insurance rejection rates and the labor supply of older workers abstract we investigate the effects of trying to mitigate moral hazard in the disability insurance di program by raising the stringency of the screening process for applicants we do so by studying a dramatic increase in rejection rates for the di program in the late 1970s which varied substantially across the us states we find that each 10 rise in denial rates led to a statistically significant 2 8 fall in labor force non participation among 45 64 year old males we also find that the denial rate increases effectively targeted their incentive effects to more able individuals according to an anthropometric measure of disability

the political economy of hatred this paper develops a model of the interaction between the supply of hate creating stories from politicians and the willingness of voters to listen to hatred hatred is fostered with stories of an out group s crimes but the impact of these stories comes from repetition not truth hate creating stories are supplied by politicians when such actions help to discredit opponents whose policies benefit an out group egalitarians foment hatred against rich minorities opponents of redistribution build hatred against poor minorities hatred relies on people accepting rather than investigating hate creating stories hatred declines when there is private incentive to learn the truth increased economic interactions with a minority group may provide that incentive this framework is used to illuminate the evolution of anti black hatred in the united states south episodes of anti semitism in europe and the recent surge of anti americanism in the arab world

lame ducks and local fiscal policy quasi experimental evidence from portugal i use the introduction of mayoral term limits in portugal to identify how an exogenous variation in eligibility for office affects policy decisions relying on a quasi experimental difference in differences approach i find that term limited incumbents pursue more conservative fiscal policies than those who are eligible for re election heterogeneous effects show that the treatment effects primarily reflect the behaviour of right leaning term limited incumbents results are in line with a model in which right leaning officeholders try to maintain a good reputation by pleasing an electorate prone to redistribution while they are eligible but adopt policies closer to their true preferences when term limited

self screening in targeted public transfer programs the self screening properties of initial eligibility determination a mechanism often under the control of the administrators of targeted transfer programs are derived and the use of this mechanism in the social security disability insurance system is explored empirically an increase in the rigor of initial eligibility screening may discourage potential applicants because they are unaware of appeal prospects and because the eligibility decision delay is lengthened as denied applicants are forced to appeal their claims in the disability program a 10 percent increase in the initial denial rate induces a 4 percent decrease in applications self selection is nonperverse

consistency of the least squares estimator in threshold regression with endogeneity this paper shows that when the threshold variable is independent of other covariates such as in the structural change model the least squares estimator of the threshold point is consistent even if endogeneity is present

sick of being unemployed interactions between unemployment and sickness insurance this paper examines the incentive effects of interactions between unemployment insurance ui and sickness insurance si two important components of sweden s social insurance system the main topic is how the sickness report rate among the unemployed is affected by i the limit of 300 workdays for ui benefits and ii the difference in maximum compensation between ui and si benefits results obtained by duration analysis suggest that sick reports increase as the ui benefit expiration date approaches there is also evidence of an incentive effect on the sick report rate because si offers higher compensation than ui

determinants of the demise of terrorist organizations this article investigates the determinants of terrorist groups failure by applying survival analysis in a discrete time specification our sample consists of a diverse set of 586 terrorist groups in which just over 63 end operations demise during 1970 2007 we use rand event data and jones and libicki terrorist group data findings show that the survival of terrorist groups is bolstered by diversifying attacks having multiple home bases locating in the middle east locating in a democratic country and limiting reliance on transnational terrorist attacks moreover larger groups have better survival prospects religious fundamentalist terrorist groups face better survival prospects than other terrorist groups terrorist groups located in a country with larger tropical territory are less likely to end operations however groups based in a landlocked country are more likely to fail

studying the role of political competition in the evolution of government size over long horizons here we argue for the use of cointegration and error correction analysis to combine economic factors that are nonstationary with political factors that are stationary into an empirical model of the evolution of public policy over long periods the approach is applied to disentangle the contributions of economics and politics to the evolution of public expenditure by the government of canada over 130 years political competition emerges as the primary political factor affecting government size

the economics of counterterrorism a survey we provide a review of theoretical and empirical contributions on the economic analysis of terrorism and counterterrorism we argue that simple rational choice models of terrorist behavior in the form of cost benefit models already provide a well founded theoretical framework for the study of terrorism and counterterrorism we also hint at their limitations which relate to the failure of accounting for the dynamics between terrorism and counterterrorism that may produce unintended second order effects as well as for the costs associated with counterterrorism and its international dimension we reevaluate previously proposed counterterrorism strategies accordingly finally in the light of our findings we discuss interesting areas of future research

how to organize crime in criminal organizations diffusing information widely throughout the organization might lead to greater internal efficiency in particular since these organizations are self sustaining through enhancing trust however this may come at the cost of leaving the organization more vulnerable to external threats such as law enforcement we consider the implications of this trade off and characterize the optimal information structure rationalizing both hierarchical structures and organization in cells then we focus on the role of the external authority characterize optimal detection strategies and discuss the implications of different forms of enforcement on the internal structure of the organization and policy finally we discuss a number of applications and extensions in this paper we study the interplay between trust within an illegal organization and its vulnerability to the authorities illegal organizations function more effectively when the people who constitute them trust each other we argue that information sharing is an important factor in building internal trust and cohesion but that can leave the organization vulnerable understanding how this trade off affects an organization s information structure and productivity can allow us to assess detection policies designed to destabilize such organizations since 9 11 the u s congress has passed a 400 billion annual budget for the war on terror new domestic institutions have been created or enhanced among many others the counterterrorism section at the u s department of justice s criminal division international intelligence cooperation has been strengthened and new protocols and controversial legal tools such as the patriot act have been developed however these new agencies and institutions face the same basic questions that have challenged the prosecutors fighting organized crime in italy south america and eastern asia as well as authorities fighting terrorism all over the world now and in the past how can we learn about the internal structure of criminal organizations how should we go about investigating a criminal organization in order to break its internal cohesion how does a criminal organization react to investigation policies we highlight the fact that simply understanding the information links within an organization gives us insight into addressing these questions the anecdotal evidence suggests that there is a wide heterogeneity across the information structures of different criminal organizations the most credited theory about the mafia developed in the early 1990 s has identified the so called cupola as the highest level of the organization supposedly consisting of agents who hold large amounts of information about the organization itself and carry out the enforcement needed for the organization to function 2 these crucial agents are shielded from the authorities since they are typically not directly involved in criminal activities this theory suggests a centralized information and enforcement structure 1 previous drafts have circulated under the titles power and organizational structure under an external threat

var based estimation of euler equations with an application to new keynesian pricing abstract var based estimation of euler equations exploits cross equation restrictions that the theory imposes on a vector autoregressive var process for market expectations this paper shows that sargent s 1979 a note on maximum likelihood estimation of the rational expectations model of the term structure journal of monetary economics 5 133 143 original approach of imposing these restrictions on the endogenous variable of the euler equation i e computing the rational expectations solution implies multiple solutions and is therefore impracticable the paper shows that this identification problem can be circumvented by reverse engineering the cross equation restrictions on the forcing variable of the euler equation the proposed reverse engineering approach contrasts with the conventional approach in the literature that avoids the identification problem by constraining the system formed by the euler equation and the var process to yield a unique stable rational expectations equilibrium this uniqueness condition makes little economic sense because the var process is just a reduced form approximation of true market expectations and a simulation experiment shows that imposing uniqueness can lead to severe misspecification bias the severity of this misspecification bias is illustrated in practice with an application to gali and gertler s 1999 inflation dynamics a structural econometric analysis journal of monetary economics 44 195 222 hybrid new keynesian phillips curve

screening disability insurance applications this paper investigates the effects of stricter screening of disability insurance applications a large scale experiment was setup where in two of the 26 dutch regions case workers of the disability insurance administration were instructed to screen applications more stringently the empirical results show that stricter screening reduces long term sickness absenteeism and disability insurance applications we find evidence for direct effects of stricter screening on work resumption during the period of sickness absence and for self screening by potential disability insurance applicants stricter screening seems to improve targeting efficiency without inducing negative spillover effects to the inflow into unemployment insurance the costs of stricter screening are only a small fraction of the monetary benefits

poverty and crime in 19th century germany we estimate the impact of poverty on crime in 19th century bavaria germany rainfall is used as an instrumental variable for grain rye prices to address econometric identification problems in the existing literature the rye price was a major determinant of living standards during this period the rye price has a positive effect on property crime a one standard deviation increased property crime by 8 ols estimates are twice as large as instrumental variable estimates highlighting the value of our empirical approach higher rye prices lead to significantly less violent crime though and we argue that higher beer prices caused by the higher rye prices are a likely explanation

inconsistency of 2sls estimators in threshold regression with endogeneity abstract this paper shows the inconsistency of three forms of 2sls estimators to illustrate the specialty of the endogeneity problem in threshold regression