boon or burden the effect of private sector debt on the risk of sovereign default in developing countries i introduction the past two decades witnessed a strong increase in private foreign borrowing in emerging markets and developing countries although in 1990 the private sector accounted for a mere 16 of all external loans disbursed to developing countries this share has increased to 77 in 2006 figure 1a likewise in 2006 the private sector s non publicly guaranteed debt liabilities accounted for 44 of developing countries total external debt up from a mere 5 in 1990 figure 1b 1 a key question in light of the ongoing global financial turmoil is what the boom in private sector external indebtedness will imply for sovereign risk in developing countries in this paper we empirically investigate the record of the past three decades to throw some light on this issue on theoretical grounds there are arguments both in favor and against a stabilizing effect of private sector borrowing on sovereign risk a critical view of private sector exposure is based on the notion that large scale private borrowing creates vulnerabilities that may eventually lead to a sovereign default a sudden stop may force the public sector to assume at least part of the private debt and this may eventually cause debt service difficulties for the government following this logic both public and private external debt pose a threat to sovereign creditworthiness the opposite argument that private sector borrowing does not harm government creditworthiness can be made by invoking the idea that the private sector is exposed to greater competitive pressure which raises the incentives to use the borrowed funds productively more importantly a potentially stabilizing role of private sector borrowing can also be linked to the distributional consequences of sovereign defaults agents who are reliant on foreign credit are particularly vulnerable to the disruptions that come along with sovereign default a larger share of the private sector in total external debt a proxy of the relative size and stake of agents that would be hurt by sovereign default would thus raise the political costs of default given the competing theoretical arguments the role of the private sector for sovereign creditworthiness is an empirical question a first impression of how these magnitudes may be related is provided in figure 2 which plots the institutional investor s measure of country creditworthiness iiccr against the level of external debt relative to gni figure 2a and the share of private long term external debt in countries total long term external debt figure 2b 2 not surprisingly the correlation between debt and creditworthiness is negative 0 37 by contrast the correlation between private sector share and the iiccr is positive 0 54 3 although this picture obviously does not prove a causal relationship it suggests that relative private sector exposure and perceived creditworthiness might be positively related figure 1 omitted figure 2 omitted further evidence that private and public debt are likely to have very different effects on the risk of sovereign default is provided in table 1 the entries in this table are cross country averages of various debt related variables just before the onset of 5 yr periods in which a sovereign default did or did not take place 4 the first column of table 1 shows that initial debt relative to gni is on average much higher before a default period than before a non default period conversely column 2 indicates that the average share of the private sector in total external debt is much higher before non default periods than before default periods a first look at the data thus seems to point into the direction that a higher share of private debt in total external debt is associated with higher perceived creditworthiness as reflected by the institutional investor s country credit ratings and with a lower likelihood of sovereign default

cliometrics and time series econometrics some theory and applications the paper discusses a range of modern time series methods that have become popular in the past 20 years and considers their usefulness for cliometrics research both in theory and via a range of applications issues such as spurious regression unit roots cointegration persistence causality structural time series methods including time varying parameter models are introduced as are the estimation and testing implications that they involve applications include a discussion of the timing and potential causes of the british industrial revolution income convergence and the long run behaviour of english real wages 1264 1913 finally some new and potentially useful developments are discussed including the mildly explosive processes graphical modelling and long memory

tax evasion financial development and inflation theory and empirical evidence abstract using a standard overlapping generations monetary production economy faced with endogenously determined tax evasion by heterogeneous agents in the economy we provide a theoretical model that indicates that both a lower higher level of financial development and a higher lower level of inflation leads to a bigger smaller shadow economy these findings are empirically tested within a panel econometric framework using data collected for 150 countries over the period 1980 2009 to enable a broad generalisation of the results the results support the developed theoretical model even after having accounted for the differences in the levels of economic development the level of institutional quality that includes different tax regimes and regulatory frameworks central bank participation in the economy as well as different macroeconomic policies

tests for parameter instability in regressions with i 1 processes this article derives the large sample distributions of lagrange multiplier lm tests for parameter instability against several alternatives of interest in the context of cointegrated regression models the fully modified estimator of phillips and hansen is extended to cover general models with stochastic and deterministic trends the test statistics considered include the supf test of quandt as well as the lm tests of nyblom and of nabeya and tanaka it is found that the asymptotic distributions depend on the nature of the regressor processes that is if the regressors are stochastic or deterministic trends the distributions are noticeably different from the distributions when the data are weakly dependent it is also found that the lack of cointegration is a special case of the alternative hypothesis considered an unstable intercept so the tests proposed here may also be viewed as a test of the null of cointegration against the alternative of no cointegration the tests are applied to three data se

factor models and time varying parameter framework for forecasting exchange rates and inflation a survey a survey of models used for forecasting exchange rates and inflation reveals that the factor based and time varying parameter or state space models generate superior forecasts relative to all other models this survey also finds that models based on taylor rule and portfolio balance theory have moderate predictive power for forecasting exchange rates the evidence on the use of bayesian model averaging approach in forecasting exchange rates reveals limited predictive power but strong support for forecasting inflation overall the evidence overwhelmingly points to the context of the forecasts relevance of the historical data data transformation choice of the benchmark selected time horizons sample period and forecast evaluation methods as the crucial elements in selecting forecasting models for exchange rate and inflation

interest rates and currency prices in a two country world abstract this paper is a theoretical study of the determination of prices interest rates and currency exchange rates set in an infinitely lived two country world which is subject both to stochastic endowment shocks and to monetary instability formulas are obtained for pricing all equity claims nominally denominated bonds and currencies and these formulas are related to earlier closely related results in the theories of money finance international trade

implications of immigration policies for the u s farm sector and workforce i background in 1942 the united states and mexico signed the bracero program a formal agreement to draw seasonal labor to work in u s agriculture which provided employment opportunities to poor rural mexicans 1 however this program was abolished in 1964 ending the legal seasonal labor supply to u s agriculture in the southwestern states concurrently the united states passed the immigration act of 1965 establishing a quota of 120 000 legal immigrants per year the abandonment of the bracero program the new legal immigrants quota limits and economic inequality between the united states and mexico paved the way for steady entry of illegal laborers and led to eventual insurmountable illegal immigration population in the united states because illegal immigration was not a serious problem in the 1960s and 1970s legislation addressed only the number of legal immigrants allowed to enter the united states but in the 1980s illegal immigration began to emerge as a national problem and extensive debates entrenched around issues such as preventing the entry of unauthorized workers providing public services to illegal immigrants and even legalizing these workers consequently the u s congress attempted to address the immigration problems by enacting the 1986 immigration reform and control act irca the goals of irca were to eliminate the stock of undocumented workers through amnesty 2 and domestic enforcement of employer sanctions and curb the influx of illegal immigrants by increasing the border surveillance amnesty failed to eliminate the stock of illegal immigrants because only about half of the illegal immigrants filed for citizenship and it created future expectation of amnesty and more illegal unauthorized entry furthermore domestic sanctions on employers of undocumented workers and deportation of these workers were scantly enforced to stop the influx of immigrants irca focused heavily on tightening border control the irca also legislated the h 2a program which allowed agricultural employers to bring in guest workers during seasonal operations ers 2007 however farmers complained that the cumbersome paperwork of h 2a and bureaucratic delay were not conducive to procure seasonal laborers at the time of peak farm operations such as vegetable and fruit picking 3 in spite of irca s amnesty provision and strengthened control measures illegal immigration continued to rise about 12 million unauthorized immigrants resided in the united states in 2007 martin 2007 which is reaffirmed by many popular press reports leading to an extended congressional debate that began at the start of this decade to solve the illegal immigration problem several bills were proposed by the house of representatives the senate and the white house addressing issues related to increased domestic and border enforcements 4 paths to citizenship and guest worker programs montgomery 2006 these bills were not passed because of major disagreements among lawmakers over providing citizenship and guest worker programs as a result of the failed legislations and the september 11 attack the government primarily focused on border security accordingly funding for border enforcement has steadily increased 5 and resources were diverted from domestic to border enforcement however boucher and taylor 2007 documented that increased funding to secure the border did not deter undocumented workers from crossing the border because determined immigrants eventually find a way to enter the country by repeated attempts following september 11 2001 the u s immigration and customs enforcement ice further decreased the number of human hours devoted to worksite inspection because monitoring critical infrastructure took priority gao 2005 for example from 1999 to 2003 the number of human hours for domestic enforcement decreased from 480 000 to 18 000 6 7 but by late 2005 the u

testing the monetary model of exchange rate determination new evidence from a century of data abstract we test the long run monetary model of exchange rate determination for a collection of 14 industrialized countries using data spanning the late nineteenth or early twentieth century to the late twentieth century interestingly we find support for a simple form of the long run monetary model in over half of the countries we consider for these countries we estimate vector error correction models to investigate the adjustment process to the long run monetary equilibrium in the spirit of meese and rogoff journal of international economics 14 1983 3 24 we also compare nominal exchange rate forecasts based on monetary fundamentals to those based on a naive random walk model

purchasing power parity and unit root tests using panel data abstract this paper reports the results of unit root tests for real exchange rates using a panel framework this panel approach provides greatly improved power compared to conventional univariate time series unit root tests we obtain evidence supporting ppp over the recent flexible exchange rate period for g 6 and oecd countries we show explicitly that failure to find such evidence in previous research was due to the low power of the tests

sovereign bond yield spreads and sustainability an empirical analysis of oecd countries abstract we study whether and how a country s environmental social and governance esg performance relates to its sovereign borrowing costs in international capital markets we hypothesize that good esg performance plays an economic role it signals a country s commitment to sustainability and long term orientation and is a buffer against negative shocks leading to lower sovereign bond yield spreads using a sample of 20 oecd countries over the period 1996 2012 we show that countries with good esg performance are associated with lower default risk and lower sovereign bond yield spreads moreover we show that the social and governance dimensions have a significant negative association with sovereign bond yield spreads whereas the environmental dimension does not

money stock versus monetary base in time frequency exchange rate determination abstract this study uses a time frequency analysis to provide empirical evidence of the changing role of the money supply in the determination of the japanese yen u s dollar exchange rate we demonstrate that in the short run money supply has a stable significant effect on the exchange rate only after the introduction of quantitative easing policies together with a remarkable difference between the money stock and the monetary base under quantitative easing policies while money stock has a limited role at best in short run exchange rate dynamics increases in the monetary base cause the currency to depreciate in the short run the notable role of the monetary base remains exceptionally stable over time only in quantitative easing regimes while the exchange rate is unstably connected to other fundamentals moreover in the long run the monetary base outperforms the money stock in explaining the exchange rate in general lastly the growing role of the monetary base is shown to be robust to several checks

fundamentals and exchange rate prediction revisited this paper measures latent fundamental exchange rates with independent component based rates constructed from a cross section of exchange rates and then uses their deviations from exchange rates to forecast empirical results indicate that the independent component based model and its taylor rule and purchasing power parity augmented models are superior to the random walk in predicting exchange rates these results are robust to several scenarios and are likely to be observed if the us sources and the recursive scheme are applied our results reveal that information regarding the third moment of exchange rate changes is helpful to explain exchange rate movements

on the predictive power of monetary exchange rate model the case of the malaysian ringgit us dollar rate the predictive power of the monetary model for the malaysian ringgit us dollar rm usd rate is analysed using quarterly data ending in 2006 q3 we find compelling evidence of a long run relationship between exchange rates and the economic fundamental determinant macroeconomic factors systematically affect the long run movement of the rm usd rate additionally the rm usd rate was overvalued by about 10 several quarters before the 1997 crisis after the crisis rates fluctuated close to the equilibrium value the out of sample forecasts demonstrate that the monetary model outperforms the naive random walk model the monetary and purchasing power parity ppp models do well at the four to eight quarters horizon

are real exchange rates nonstationary evidence from a panel data test it is well documented that real exchange rates between the united states and many industrialized countries in the post bretton woods period are integrated this result implies that purchasing power parity ppp does not hold even as a long run relationship this paper demonstrates that the failure to reject the unit root hypothesis may result from the low power of existing univariate test procedures i test for unit roots in real exchange rates by employing a more powerful panel based procedure using both cpi and wpi real dollar exchange rate data i strongly reject the null hypothesis of a unit root my results provide overwhelming support for the long run ppp under the current float copyright 1996 by ohio state university press

the failure of the monetary model of exchange rate determination in this paper we test three popular versions of the monetary model flexible price forward looking and real interest differential models for the oecd member countries by applying johansen cointegration technique based on country by country analysis we conclude that monetary models do not provide the expected results we reveal several shortcomings of the models and examine the building blocks of the fundamental version although researchers always blame the deviations from purchasing power parity as the reason for the failure of the monetary model our analysis indicates that invalidity of keynesian money demand function is also responsible for unfavourable results

the impact of immigration enforcement on the u s farming sector this paper examines the eects of state and local immigration enforcement eorts on the u s farming sector we use variation in enforcement eorts generated by the timing of adoption of 287 g programs by state and county law enforcement agencies allowing local ocers

the integration of major fuel source markets in china evidence from panel cointegration tests abstract the paper tests for energy price co movement in china over the new regime as part of a strategy to test for the existence of a national energy market panel cointegration test statistics suggest that not all energy commodities are spatially homogenous in prices and the processes of energy price cointegration are different over time and over groups of fuels the statistics demonstrate china s gradual spatially partial and idiosyncratic energy reform process coal and electricity price series have co moved since 2003 while the national panel cointegration test statistics suggest that gasoline and diesel price series have co moved since 1997 regional panel tests also show that there are apparently differences in the emergence of energy price co movement this suggests that regional energy markets have emerged in china one of the important lessons of the research is that an energy market has to some extent already emerged in china and as a consequence energy prices are much less distorted than previously if correct this fact is of major global significance both in terms of future environmental effects and future trade and investment negotiations as china is seen internationally as a market driven economy

testing the monetary model of exchange rate determination a closer look at panels abstract in this paper we undertake an extensive evaluation of panel tests of the long run monetary model of exchange rate determination we first show how poorly the monetary model performs on a country by country basis for us dollar exchange rates over the post bretton woods period for a large number of industrialized countries in sharp contrast we find considerable support for the monetary model using panel procedures as in groen 2000 and mark and sul 2001 given the disparity in the country by country and panel approaches we carefully analyze the homogeneity restrictions inherent in the panel procedures the evidence on the appropriateness of the homogeneity restrictions is mixed in the end whether the monetary model conforms to post bretton woods data largely depends on one s prior beliefs

falling through the cracks grade retention and school dropout among children of likely unauthorized immigrants abstract we evaluate how intensified interior immigration enforcement impacts the likelihood that children of unauthorized immigrants will repeat a grade or drop out of school using a weighted index of the intensity of interior immigration enforcement at the msa level we find that increased enforcement has the largest impact on younger children ages 6 to 13 the estimates which account for the non random residential location of children and their families reveal that increased enforcement raises young children s probability of repeating a grade by 6 percent and their likelihood of dropping out of school by 25 2 percent

testing for bubbles in exchange markets a case of sparkling rates this paper investigates the possibility that the observed deviations of major bilateral exchange rates from values implied by market fundamentals are a consequence of rational asset market bubbles when a new econometric methodology for detecting asset market bubbles is used the joint hypothesis of no bubbles and stable autoregressive processes for relative money supplies and real incomes is rejected for the dollar deutsche mark and dollar pound ratesusing monthly data over the period 1973 82 additional tests for coefficient stability and for lack of cointegration between exchange rates and market fundamentals suggest that the bubble findings must be interpreted with care

the monetary exchange rate model as a long run phenomenon abstract pure time series based tests fail to find empirical support for monetary exchange rate models in this paper we apply pooled time series estimation on a forward looking monetary model resulting in parameter estimates which are in compliance with the underlying theory based on a panel version of the engle and granger engle r f granger c w j 1987 co integration and error correction representation estimation and testing econometrica 55 251 276 two step procedure we find that the residuals of the panel based estimated monetary model are stationary this indicates that on a pooled time series level there is cointegration between the exchange rate and the macroeconomic fundamentals of this monetary model

the link between life insurance activities and economic growth some new evidence abstract this paper applies the panel seemingly unrelated regressions augmented dickey fuller suradf test to re investigate the stationarity properties of real life insurance premiums per capita and real gross domestic product gdp per capita for 41 countries within three levels of income covering 1979 2007 our empirical results first reveal that the variables in these countries are a mixture of i 0 and i 1 processes and that the traditional panel unit root tests could lead to misleading inferences second for the estimated half lives the degrees of mean reversion are greater in high income countries third there is concrete evidence favoring the hypothesis of a long run equilibrium relationship between real gdp and real life insurance premiums after allowing for the heterogeneous country effect the long run estimated panel parameter results indicate that a 1 increase in the real life premium raises real gdp by 0 06 finally we determine that the development of life insurance markets and economic growth exhibit long run and short run bidirectional causalities these findings offer several useful insights for policy makers and researchers

exchange rate predictability the main goal of this article is to provide an answer to the question does anything forecast exchange rates and if so which variables it is well known that exchange rate fluctuations are very difficult to predict using economic models and that a random walk forecasts exchange rates better than any economic model the meese and rogoff puzzle however the recent literature has identified a series of fundamentals methodologies that claim to have resolved the puzzle this article provides a critical review of the recent literature on exchange rate forecasting and illustrates the new methodologies and fundamentals that have been recently proposed in an up to date thorough empirical analysis overall our analysis of the literature and the data suggests that the answer to the question are exchange rates predictable is it depends on the choice of predictor forecast horizon sample period model and forecast evaluation method predictability is most apparent when one or more of the following hold the predictors are taylor rule or net foreign assets the model is linear and a small number of parameters are estimated the toughest benchmark is the random walk without drift

cointegration how short is the long run abstract when testing for cointegration and faced with short sample periods it is common for researchers to turn to more frequently sampled observations that is to move from annual to quarterly or monthly data in order to increase the number of observations we argue that such a gain in the degrees of freedom is more apparent than real essentially cointegration is a long run concept and hence requires long spans of data to give tests for cointegration much power rather than merely large numbers of observations using monte carlo simulations we demonstrate this for four popular tests for cointegration

uncovering the link between a flexible exchange rate and fundamentals the case of central and eastern european economies this article examines the link between a nominal exchange rate and macrofundamentals in central and eastern european cee countries we use the model based on the monetary policy rule as a theoret

does the euro follow the german mark evidence from the monetary model of the exchange rate abstract this paper investigates whether german or synthetic european pre emu data provides the appropriate empirical basis for evaluating euro dollar exchange rate behavior monetary exchange rate equations are estimated for both data sets over the pre emu period and out of sample forecasts are evaluated to assess their ability to explain the euro dollar exchange rate from 1999 to 2004 while forecast accuracy tests confirm the usefulness of synthetic european data for euro exchange rate analysis forecasts based on the german pre emu experience cannot even beat a random walk our results indicate that the euro does not simply follow the german mark but that it has its origins in the other pre emu currencies as well

co integration tests for long run equilibrium in the monetary exchange rate model abstract the monetary model of exchange rate determination is tested as a long run equilibrium relation tests of co integration among the variables in this model over a wide range of specifications are generally unfavorable to the monetary approach

turnover in u s agricultural labor markets agricultural workers move in and out of agriculture frequently migration between types of jobs takes relatively little time legal female workers tend to stay out of the u s labor market longer once they stop being employed and their access to jobs outside of agriculture is more limited than that of their male counterparts predictions made when the 1986 immigration reform and control act was passed that granting people amnesty would induce most of them to leave agriculture were incorrect copyright 2002 oxford university press

immigration reform and farm labor markets farmers throughout the united states report a shortage of workers at the same time there are proposals to strengthen the enforcement of existing immigration laws in this paper we develop an equilibrium approach to examine the impact of removing undocumented workers from the california agricultural labor market and to infer whether there is evidence of shortages using individual worker data we find evidence that is consistent with a persistent shortage in some sub sectors of the california farm labor market further we conduct counter factual policy simulations over a range of possible policy alternatives and find that removing 50 all undocumented farm workers from the state would lead to an increase in wages of over 22

a panel project on purchasing power parity mean reversion within and between countries abstract previous time series studies have shown evidence of mean reversion in real exchange rates deviations from purchasing power parity ppp appear to have half lives of approximately four years however the long samples required for statistical significance are unavailable for most currencies and are potentially inappropriate because of regime changes in this study we re examine deviations from ppp using a panel of 150 countries and 45 annual post wwii observations our panel shows strong evidence of mean reversion that is similar to that from long time series ppp deviations are eroded at a rate of approximately 15 annually i e their half life is around four years such findings can be masked in time series data but are relatively easy to find in cross sections

the failure of the monetary exchange rate model for the canadian u s dollar in this paper the validity of the monetary exchange rate model in the long run for the canadian u s dollar exchange rate is examined the primary test employed is the johansen 1991 and johansen and juselius 1990 cointegration technique the effects of dummy variables and lag specification on the statistical inference are considered and monte carlo simulations based on the estimated parameters are employed despite the use of the longest data set yet for the canadian case no evidence is found in favour of the monetary exchange rate model using the johansen procedures this result is confirmed by several other cointegration procedures jel classification f31 f41 la faillite du modele monetaire du taux de change pour les dollars canadien et americain ce memoire examine le modele monetaire du taux de change pour savoir s il est valide par l experience canado americaine en longue periode le test principal utilise est la technique de cointegration de johansen 1991 et johansen et juselius 1990 les effets des variables fictives et de la specification de la structure de delais sur l inference statistique sont consideres et on utilise des simulations de monte carlo fondees sur les parametres calibres malgre le fait qu on fait appel a la plus longue serie chronologique utilisee dans ce type d analyse a ce jour on ne trouve aucun support du modele monetaire du taux de change en utilisant les procedures de johansen ce resultat est confirme par l utilisation de plusieurs autres procedures de cointegration

us immigration policies and dynamics of cross border workforce in agriculture given the contentious debate on immigration this study develops a dynamic model to analyse the effects of stricter border and domestic enforcement and streamlining the guest worker programme on cross border migration from mexico employment and production in us labour intensive and mexican agriculture and the us and mexican wage rates the model incorporates labour leisure decisions of mexican workers and labour market dynamics and linkages the findings show stricter border and domestic controls exacerbate the labour shortage problems and reduce the us agricultural production streamlining the guest worker programme provides a steady supply of farm workers and has negligible impact on the us wage

immigration enforcement and economic resources of children with likely unauthorized parents abstract over the past two decades immigration enforcement has grown exponentially in the united states using data from the 2005 through 2011 american community survey we exploit the geographical and temporal variation in a novel index of the intensity of immigration enforcement to show how the average yearly increase in interior immigration enforcement over that period raised the likelihood of living in poverty of households with u s born children by 4 the effect is robust to a number of identification tests accounting for the potential endogeneity of enforcement policies and residential location of immigrants and is primarily driven by police based immigration enforcement measures adopted at the local level such as 287 g agreements

taylor rules and exchange rate predictability in emerging economies abstract this study demonstrates the relationship between exchange rate determination and an endogenous monetary policy represented by taylor rules we fill a gap in the literature by focusing on a group of fifteen emerging economies that adopted free floating exchange rates and inflation targeting beginning in the mid 1990s because of the limited span of the time series which is a common obstacle to studying emerging economies we employ panel data regressions to produce more efficient estimates following the recent literature we use a robust set of out of sample statistics incorporating bootstrapped and asymptotic distributions for the diebold mariano statistic the clark and west statistic and theil s u ratio by evaluating different specifications for the taylor rule exchange rate model based on their out of sample performances we find that a present value forward looking specification shows strong evidence of exchange rate predictability

the monetary model of the exchange rate long run relationships short run dynamics and how to beat a random walk abstract the monetary model is re examined for the sterling dollar exchange rate first it is demonstrated using a multivariate cointegration technique that an unrestricted monetary model is a valid framework for analyzing the long run exchange rate second we find once proper account has been taken of the short run data dynamics that an unrestricted monetary model outperforms the random walk and other models in an out of sample forecasting contest jel f31

searching for stationarity purchasing power parity under the current float abstract using panel data methods we investigate long run purchasing power parity by testing for unit roots in real exchange rates of industrial countries under the current float the evidence against the unit root hypothesis is stronger for larger than for smaller panels for monthly than for quarterly data and when the german mark rather than the united states dollar is used as the base currency while we find that accounting for serial correlation considerably weakens the evidence against the unit root null the results as a whole are consistent with long run purchasing power parity

a new poolability test for cointegrated panels this paper proposes a new test of the null hypothesis that the parameters in a cointegrated panel data regression are equal across the cross section the asymptotic distribution of the new test statistic is derived and simulation results are provided to suggest that it performs very well in small samples an empirical application to the monetary exchange rate model is also provided copyright 2009 john wiley sons ltd

exchange rates and fundamentals under adaptive learning abstract this paper studies a monetary model that is standard in all respects except that market participants have incomplete knowledge about the economic structure and employ adaptive learning rules to learn about the economic environment market participants also must contend with unannounced regime shifts simulation results suggest that the models under adaptive learning especially constant gain learning combined with a structural change dominate the alternative specifications of expectations in their ability to account for why fundamentals predict exchange rate returns over long horizons but not over short horizons and for generating excessively volatile returns and persistent deviations of the exchange rate from the monetary fundamentals

is immigration enforcement shaping immigrant marriage patterns abstract this paper identifies intermarriage between non citizens and citizens as an important response mechanism to intensified immigration enforcement particularly among mexican non citizens exploiting the temporal and geographic variation in the implementation of interior immigration enforcement from 2005 to 2017 we find that a one standard deviation increase in enforcement raises mexican non citizens likelihood of marrying a u s citizen by 3 to 7 both police based and employment based enforcement contribute to this impact the analysis adds to a growing literature examining how immigrants respond to tightened enforcement and importantly sheds light on the recent growth of intermarriage among mexican immigrants

testing for cointegration power versus frequency of observation further monte carlo results abstract this paper studies the effects of increasing the frequency of observation and the data span on the johansen cointegration tests the ability of the tests to detect cointegration depends more on the total sample length than the number of observations