target zones and interest rate variability abstract for narrow exchange rate bands and for reasonable parameter values the interest rate differential s asymptotic unconditional variability is increasing in the width of the exchange rate band whereas for wide exchange rate bands it is slowly decreasing in the exchange rate band the interest rate differential s instantaneous conditional variability is decreasing in the width of the exchange rate band a narrow target zone differs from a completely fixed exchange rate regime in that the interest rate differential s instantaneous standard deviation is high and even increases when the zone narrows

central bank intervention and risk in the forward market abstract a two country inter temporal asset pricing model is developed which implies that central bank foreign exchange intervention affects the forward exchange risk premium the model is estimated from daily foreign exchange intervention data for the us german and japanese central banks considerable empirical support is found for the theoretical model with intervention influencing the risk premium in the forward market purchases of dollars by the federal reserve bank are found to be associated with excess denominated returns there is evidence that intervention has increased rather than reduced exchange rate volatility

resource degradation and adoption of land conservation technologies in the ethiopian highlands a case study in andit tid north shewa abstract this paper reports results from a study of resource degradation and conservation behavior of peasant households in a degraded part of the ethiopian highlands peasant households choice of conservation technologies is modeled as a two stage process recognition of the erosion problem and adoption and level of use of control practices an ordinal logit model is used to explain parcel level perception of the threat of the erosion problem and the extent of use of conservation practices results show the importance of perception of the threat of soil erosion household land and farm characteristics perception of technology specific attributes and land quality differentials in shaping conservation decisions of peasants furthermore where poverty is widespread and appropriate support policies are lacking results indicate that population pressure per se is unable to encourage sustainable land use the challenge of breaking the poverty environment trap and initiating sustainable intensification thus require policy incentives and technologies that confer short term benefits to the poor while conserving the resource base

can learning affect exchange rate behavior the case of the dollar in the early 1980 s this paper demonstrates that a change in parameters of the money market that is not immediately understood will affect the behavior of exchange rate forecast errors while the market is learning the analysis is applied to the behavior of u s dollar german mark forecast errors during the early 1980 s when the market appeared to systematically underpredict the strength of the dollar consistent with this observation empirical estimates of implied forecast errors based upon bayesian learning suggest that forecast errors would have been on average negative during the period as the market came to realize the increase in u s money demand

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

on the salience of ethnic conflict ray acknowledges support from the national science foundation under grants 0421852 and 0617827 esteban is a member of barcelona economics xrea and is grateful for support from the generalitat de catalunya and the cicyt sej 2006 00369 this research is part of the polarization and conflict research project cit2 ct 2004 506084 funded by the european commission dg research sixth framework program

the accuracy of reports of foreign exchange intervention abstract this paper considers both qualitative and quantitative evidence on the accuracy of press reports of foreign exchange intervention by the federal reserve between january 1985 and december 1989 the evidence shows that the likelihood of intervention being reported given that it actually occurred was 72 per cent and that the likelihood of intervention actually occurring given that it was reported was 88 per cent interventions which were reported were larger on average than those which were not reported and this difference is statistically significant multinomial logit analysis also demonstrates that the likelihood of intervention being reported increased with the size of the intervention jel f31

learning about intervention target zones abstract this paper provides a framework for evaluating how market participants beliefs about foreign exchange target zones change as they learn about central bank intervention policy we generalize the standard target zone model to allow for intra marginal intervention intra marginal intervention implies that market participants beliefs about the target zone can be determined from their beliefs about the likelihood of intervention we then estimate a daily probability of intervention model for the period following the louvre accord we find that the market s views of intervention target zones would have varied quite a bit over time even over this relatively stable period

risks and returns from soil conservation evidence from low income farms in the philippines abstract this paper examines risks and returns associated with soil conservation on hillside farms in the philippines stochastic efficiency analysis is combined with a heteroskedastic regression model to assess the impacts of contour hedgerows on low income corn farms regression analysis indicates that over time contour hedgerows can improve yields up to 15 compared with conventional practices the analysis also provides weak support for a hypothesis that hedgerows are variance reducing however results show that the reduction in yield variability afforded by hedgerows is modest and that yield variability may increase by as much as 5 as hedgerow intensity rises tests for stochastic dominance show that compared with the conventional tillage system hedgerows do not constitute an unambiguously dominant production strategy stochastic efficiency with respect to a function is used to identify a range for the coefficient of relative risk aversion within which hedgerows dominate conventional tillage results suggest this range would be rather high hedgerows dominate the conventional cropping strategy only for decision makers with relative risk aversion coefficients in the range 3 5 5 implications for soil conservation adoption in low income settings are discussed

stochastic dominance analysis of soil and water conservation in subsistence crop production in the eastern ethiopian highlands the case of the hunde lafto area the aim of this paper is to analyze whether investment in soil and water conservation results in a higher yield and income and or mitigate variability in yield and income to subsistence farm households in the hunde lafto area net returns from crop production with and without soil and water conservation swc are compared based on stochastic dominance sd criteria a non parametric first order sd and normalized second order are used for data analysis analysis is based on the soil conservation research program scrp database for the hunde lafto research unit the results of the analysis suggest that adopting a conservation strategy results in higher grain yield and net return than in not adopting the normalized second order sd analysis results do not support the hypothesis that conservation strategy is unambiguously better than a noconservation strategy in reducing variability in yield and net return to farmers however conservation strategy has shown second order dominance at lower levels of yield and income that often correspond to unfavorable rainfall conditions this makes it a preferred strategy to cope with the most prevalent risk factor of moisture shortage therefore appropriate policies to help and encourage farmers to adopt swc structures will contribute to improving the welfare of subsistence farm households in the study area and in other similar settings in the country designing and implementing swc techniques that may result in unambiguous second order sd dominance will further improve the desirability and adoption of conservation measures

target zones and exchange rate dynamics this paper develops a simple model of exchange rate behavior under a target zone regime it shows that the expectation that monetary policy will be adjusted to limit exchange rate variation affects exchange rate behavior even when the exchange rate lies inside the zone and is thus not being defended actively somewhat surprisingly the analysis of target zones turns out to have a strong formal similarity to problems in option pricing and investment under uncertainty

a stochastic dominance comparison of reduced tillage systems in corn and soybean production under risk returns per acre of reduced tillage systems including conventional chisel till plant and no till are examined under general assumptions concerning risk these returns are calculated using com and soybean experimental plot yields stochastic dominance rankings indicate an advantage second degree of conventional and chisel over no till when soil loss costs are not assigned annual per acre soil loss costs of 5 15 shift rankings towards the reduced tillage systems a 10 per acre cost results from corn yield losses of 0 06 per year 170 bushel per acre yield base over fifty years with a 5 real discount rate

price dynamics under stochastic process switching some extensions and an application to emu abstract in this paper we solve a particular type of stochastic process switching problem where the date of switching is fixed and known but the terminal price may depend on past prices we derive closed form solutions for the price dynamics of the asset before the terminal date and deduce the variance and jump components of these dynamics at the announcement we subsequently extend the model to price dynamics prior to the announcement of the regime switch assuming that markets may have some expectations regarding the occurrence and or the type of the regime switch finally we apply the general model to discuss the implications of the chosen conversion modalities in the european monetary union emu conversion procedure

does the human capital educational sorting debate matter for development policy if education increases human capital subsidizing education can generate economic growth and combat poverty estimates of its return suggest that education is a good social investment in sorting models the return reflects in part the information about productivity revealed by the worker s education thus the social and private returns diverge it might appear that if we believe the sorting model we should be less swayed by evidence that estimated returns to education exceed the social discount rate and therefore less likely to support education based development policies this conclusion is shown to be incorrect this abstract was borrowed from another version of this item

soft exchange rate bands and speculative attacks theory and evidence from the erm since august 1993 we present a model of a soft exchange rate target zone and interpret it as a stylized description of the post august 1993 erm our central bank targets a moving average of the current and past exchange rates rather than the exchange rate s current level thus allowing the rate to move within wide margins in the short run but within narrow margins in the long run for realistic parameters soft target zones are significantly less vulnerable to speculative attacks than hard target zones these predictions are consistent with the erm s experience and the abatement of speculative pressure in european markets since the bands widening in 1993

is there evidence of fear of appreciation in china s foreign exchange market intervention abstractusing the data after the exchange rate regime reform in july 2005 this paper systematically studied the issue whether china has conducted fear of appreciation asymmetric intervention th

the linkage between speculative attack and target zone models of exchange rates in this paper we generalize the target zone exchange rate as model formalized by krugman 1988b to include finite sized interventions in defense of the zone the main contributions of these pages consist of linking the recent developments in the theory of target zones to the mirror image theory of speculative attacks on asset price fixing regimes and in using aspects of that linkage to give an intuitive interpretation to the smooth pasting condition usually invoked as a terminal condition this abstract was borrowed from another version of this item

poverty and witch killing many observers have noted that poverty and violence go hand in hand there is a strong negative relationship between economic growth and crime across countries as well as across districts in india and a link between low income and the occurrence of civil war 1 yet existing studies are typically unable to resolve the key econometric identification issues of omitted variable bias and endogeneity to illustrate the unobserved quality of local government institutions may affect both income growth and crime rates and poverty could lead to violence if desperate people with nothing to lose commit more crimes but violence itself may in turn affect economic productivity this paper uses local rainfall variation to identify the impact of income shocks on murder in a rural tanzanian district 2 extreme rainfall resulting in drought or floods is exogenous and is associated with poor harvests and near famine conditions in the region and a large increase in the murder of witches there are twice as many witch murders in years of extreme rainfall as in other years the victims are nearly all elderly women typically killed by relatives these econometric results across 11 years in 67 villages provide novel evidence on the role of income shocks in causing violent crime and religious violence in particular and also provide insights into witchcraft an important social phenomenon in africa rarely studied by economists the view that economic conditions are a driving force behind witch murders is bolstered by the fact that most witch killing in tanzania takes place in poor rural areas largely dependent on rain fed agriculture and that most victims in our sample are from poor households however it is difficult to definitively disentangle this income shock theory from alternative socio cultural explanations the concentration of tanzanian witch murders in a region dominated by one particular ethnic group the sukuma and the especially high number of witch murders in villages where indigenous religious beliefs are strong both point to the important role of non economic factors economic theories and cultural theories are perhaps best viewed as complements the empirical findings demonstrate the power of economics to rationalize a phenomenon that has previously been understood almost solely through a socio cultural lens 3

playing with the band dynamic effects of target zones in an open economy this paper applies techniques of regulated brownian motion to a model of a small open economy to investigate how bands on fundamental driving variables affect the realization of the nominal exchange rate the real exchange rate prices and output the author shows that these bands mitigate the relationship between exogenous fundamentals and endogenous variables through their effects on expectations he also considers the effects of changing the width of the band and finds greater stabilization of endogenous variables with more narrow bands on exogenous fundamentals copyright 1990 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

target zones and realignments recent contributions emphasize that the presence of exchange rate target zones has important effects on the within band behavior of exchange rates when agents are forward looking the authors find that the implications of available models are inconsistent with european exchange rate data and they suggest that the frequent realignments occurring in the period they consider may be responsible for this they construct a model in which the likelihood of a realignment in the near future increases as the exchange rate approaches the limits of its fluctuation band and show that its implications are broadly consistent with the evidence copyright 1992 by american economic association

there is no free house abstract this paper estimates the effect of a housing relocation program on the labor supply and living conditions of low income households across major cities in south africa using panel microdata collected between 2008 and 2014 it exploits the arbitrary eligibility rules of the policy with a fuzzy regression discontinuity design to obtain reduced form estimates there are three main findings first in the short term of 2 to 4 years following relocation the labor supply of recipient households decreases driven mostly by a reduction of female hours second the large increase in distance km to economic opportunities seems to be an important factor behind the decline directly or indirectly through family shifts in earning strategies finally evidence is limited regarding improvements in housing and neighborhood quality overall there is no clear indication that the net welfare effect of relocation is positive

testing target zone models using efficient method of moments the objectives of this article are threefold 1 to test target zone models using more efficient and direct econometric methodology than previous research 2 to identify an implicit band if it exists from observed data and to test target zone models based on the estimated implicit band rather than the stated official band and 3 to examine whether the exchange rate can be modeled as a managed float system with a central parity that lacks a band we find strong evidence that a model with intramarginal intervention and a narrower implicit unofficial band can describe the dynamics of the french franc deutsche mark exchange rate from january 1 1987 july 30 1993

segregation rent control and riots the economics of religious conflict in an indian city religious conflict is an important problem in many ethnically diverse countries horowitz 1985 a growing literature in economics suggests that conflict over resources is frequently at the root of such violence see for instance esteban and ray 2007 a number of recent empirical papers provide evidence that negative economic shocks to a community and the consequent struggle for control over resources can help explain the eruption of historic tensions into acts of violence miguel et al 2004 oster 2004 and miguel 2005 we explore this link further by studying the relationship between hindu muslim violence and living arrangements in particular residential segregation within cities in india that is conditional on city level demographics and the overall degree of ethnic tension what are the characteristics of specific locations within a city where communal violence tends to emerge and what can this tell us about why some neighborhoods erupt in this manner at certain points in time communal violence at the neighborhood level

central bank intervention and exchange rate volatility abstract this paper explores the effects of foreign exchange intervention by central banks on the behavior of exchange rates the g 3 central banks have undertaken an unprecedented number of both coordinated and unilateral intervention operations in the last 10 years existing empirical evidence on the effectiveness of intervention is mixed studies using data from the 1970s suggest that intervention operations that do not affect the monetary base have at most a short lived influence on exchange rates but more recent studies indicate that the intervention operations that followed the plaza agreement influenced both the level and variance of exchange rates this paper examines the effects of us german and japanese monetary and intervention policies on dollar mark and dollar yen exchange rate volatility over the 1977 1994 period the results indicate that intervention operations generally increase exchange rate volatility this is particularly true of secret interventions which are those undertaken by central banks without notification of the public overt interventions in the mid 1980s appear to have reduced exchange rate volatility but in other periods and for the 1977 1994 period as a whole central bank intervention is associated with greater exchange rate volatility

implications of an economic theory of conflict hindu muslim violence in india we model intergroup conflict driven by economic changes within groups we show that if group incomes are low increasing group incomes raises violence against that group and lowers violence generated by it we then apply the model to data on hindu muslim violence in india our main result is that an increase in per capita muslim expenditures generates a large and significant increase in future religious conflict an increase in hindu expenditures has a negative or no effect these findings speak to the origins of hindu muslim violence in post independence india

big effects of small interventions the informational role of intervention in exchange rate policy abstract in this paper we demonstrate how an infintesimal unsterilized foreign exchange intervention may cause a very large discrete change in the exchange rate we analyze an example in which there is a target zone policy in place but the actual width of the target zone is not known by participants in the foreign exchange market in this case intervention both affects fundamentals and conveys information about policy the exchange rate jumps in response to intervention with the size of the jump related to the uncertainty about the true band width also in this model the relationship between the exchange rate and the fundamental depends upon both the history of the path of the exchange rate and whether or not intervention has occured

cultural proximity and loan outcomes we present evidence that shared codes religious beliefs ethnicity cultural proximity between lenders and borrowers improves the efficiency of credit allocation we identify in group preferential treatment using dyadic data on the religion and caste of bank officers and borrowers from a bank in india and a rotation policy that induces exogenous matching between officers and borrowers cultural proximity increases lending on both intensive and extensive margins and improves repayment performance even after the in group officer is replaced by an out group one further cultural proximity increases loan dispersion and reduces loan to collateral ratios our results imply that cultural proximity mitigates informational problems that adversely affect lending which in turn relaxes financial constraints and improves access to finance

a model of exchange rate dynamics this model treats the exchange rate as an asset price that depends on expectations concerning exogenous real and monetary factors that will affect relative prices and absolute price levels in future periods changes in exchange rates reflect both expected changes in these exogenous factors and changes in expectations occasioned by new information the model explains the random component in exchange rate behavior the source of divergences from purchasing power parity the anticipatory response of exchange rates to future expected disturbances and the causes of exchange rate overshooting

the term structure of interest rate differentials in a target zone theory and swedish data abstract the term structure of interest rate differentials is derived in a model of a small open economy with a target zone exchange rate regime for given time to maturity the interest rate differential is decreasing in the exchange rate and for given exchange rate the interest rate differential s absolute value and its instantaneous variability are both decreasing in the time to maturity devaluation realignment risks are incorporated and imply upward shifts of the interest rate differentials several implications of the theory are found to be broadly consistent with data on swedish exchange rates and interest differentials for the period 1986 1989