pareto improving campaign finance policy this paper argues that campaign finance policy in the form of contribution limits and matching public financing can be pareto improving even under very optimistic assumptions concerning the role of campaign advertising and the rationality of voters the optimistic assumptions are that candidates use campaign contributions to convey truthful information to voters about their qualifications for office and that voters update their beliefs rationally on the basis of the information they have seen the argument also assumes that campaign contributions are provided by interest groups and that candidates can offer to provide policy favors to attract higher contributions

harvests and business cycles in nineteenth century america most major american industrial business cycles from around 1880 to the first world war were caused by fluctuations in the size of the cotton harvest due to economically exogenous factors such as weather wheat and corn harvests did not affect industrial production nor did the cotton harvest before the late 1870s the unique effect of the cotton harvest in this period can be explained as an essentially monetary phenomenon the result of interactions between harvests international gold flows and high powered money demand under america s goldstandard regime of 1879 1914

mean reversion in real exchange rates evidence and implications for forecasting abstract the stationarity of real exchange rates over the recent flexible exchange rate period is an issue that has long bedeviled researchers in international finance using a constrained multivariate framework this paper provides the strongest evidence yet that real exchange rates were mean reverting over the 1973 93 period we also investigate shifts in long run real exchange rates which may be important for the purpose of forecasting out of sample forecasting shows that the random walk model is outperformed by a mean stationary model especially at long horizons in addition there are substantial forecasting benefits from using a multivariate approach

purchasing power parity modeling and testing mean reversion abstract a model of mean reversion of exchange rates to purchasing power parity is developed and tested where exchange rates are assumed to follow a mean reverting elastic random walk toward a stochastic ppp rate the model recognizes the possibility that mean reversion towards ppp may be nonlinear which allows greater flexibility in the adjustment process regression equations consistent with the theoretical model are derived the model is tested using long and short term data for six countries while the results are generally consistent with the findings of previous studies evidence is presented which demonstrates that the mean reversion process is not linear for some countries

real exchange rates between the wars abstract bilateral real exchange rates are analyzed for fifteen countries over the period 1925 1937 using a benchmark invariant principal components technique for the period 1925 1931 half of real exchange rate variation originates from countries on floating exchange rates and half from price level differences between countries on the gold standard for the period 1931 1937 real exchange rate movements between the sterling bloc the european gold bloc and the us and canada appear dominant within bloc variation is secondary and mostly due to competitive devaluations our results support earlier evidence that the nominal exchange rate regime to a large extent determines real exchange rate variation

nonlinear purchasing power parity under the gold standard 1 introductionrecent theoretical analysis of purchasing power deviations see e g dumas 1992 sercu uppal and van hull 1995 and o connell and wei 1997 demonstrates how transactions costs or the sunk costs of international arbitrage induce nonlinear adjustment of the real exchange rate to purchasing power parity ppp globally mean reverting this nonlinear process has the important property of exhibiting near unit root behavior for small deviations from ppp since small deviations from ppp are left uncorrected if they are not large enough to cover the transactions costs or the sunk costs of international arbitrage a parametric nonlinear model suggested by the theoretical literature that captures the nonlinear adjustment process in aggregate data is the exponential smooth transition autoregression model estar of ozaki 1985 a smooth rather than discrete adjustment mechanism is motivated by the theoretical analysis of dumas 1992 also as postulated by terasvirta 1994 and demonstrated theoretically by berka 2002 in aggregate data regime changes may be smooth rather than discrete given that heterogeneous agents do not act simultaneously even if they make dichotomous decisions 1 recent empirical work e g michael nobay and peel 1997 taylor peel and sarno 2001 peel and venetis 2002 has reported empirical results that suggest that the estar model provides a parsimonious fit into a variety of data sets particular for monthly data for the interwar and postwar floating period as well as for annual data spanning 200 years as reported in lothian and taylor 1996 in addition nonlinear impulse response functions derived from the estar models show that although the speed of adjustment for small shocks around equilibrium will be highly persistent larger shocks mean revert much faster than the glacial rates previously reported for linear models rogoff 1996 in this respect the estar models provide some solution to the ppp puzzle outlined in rogoff 1996 2the estar model can also provide an explanation of why ppp deviations analyzed from a linear perspective appear to be described by either a nonstationary integrated i 1 process or alternatively described by fractional processes see e g diebold husted and rush 1991 taylor peel and sarno 2001 and pippenger and goering 1993 show that the dickey fuller tests have low power against data simulated from an estar model michael nobay and peel 1997 and byers and peel 2003 show that data that is generated from an estar process can appear to exhibit the fractional property that this would be the case was an early conjecture by acosta and granger 1995 given that the estar model has a theoretical rationale whereas the fractional process is a relatively nonintuitive one the fractional property might reasonably be interpreted as a misleading linear property of ppp deviations granger and terasvirta 1999 whereas the empirical work employing estar models provides some explanation of the glacially slow adjustment speeds obtained in linear models there is one aspect of the empirical work that is worthy of further attention a second way of explaining the rogoff puzzle raised by rogoff himself 3 is to relax the assumption that the equilibrium real exchange rate is a constant see e g canzoneri cumby and diba 1996 and chinn and johnston 1996 theoretical models such as that of balassa 1964 and samuelson 1964 imply a nonconstant equilibrium in the real exchange rate if real productivity growth rates differ between countries 4 nonlinear models that incorporate proxies for these effects are found to parsimoniously fit post bretton woods data for the main real exchange rates see venetis paya and peel 2002 and paya venetis and peel 2003 naturally models that ignore this effect may generate misleading speeds of ppp adjustment to shocks in this regard the empirical results of hegwood and papell 2002 for the gold standard period are particularly interesting

a puzzle in sri the investor and the judge as socially responsible investment sri enters the mainstream of professional and institutional investment practice some perplexities arise some sri market participants are well schooled in finance but are hesitative as to how to apply non financial criteria in the management of portfolios governments too are giving sri more attention and in some countries are discussion whether and how to regulate the sri market advocacy groups are targeting sri projects through media campaigns using political discourse many of the pertinent questions that come with these perplexities are of the philosophical or ethical type and concern legitimisation demarcation of responsibilities interpretation of norms and policy formulation the inclusion of non financial criteria into investment decision making leads to a puzzle in sri for which this article offers a solution the puzzle arises when the day to day implementation of an sri policy coincides with the process of administering justice three questions make up that puzzle 1 what should an investor do when allegations arise about a corporation 2 what should an investor do when a corporation is brought before a court 3 what should an investor do when a corporation is found guilty by a court this article argues by distinguishing between the rationality of the investor and that of the judge that allegations court cases or court verdicts should not be reasons to disinvest from a corporation this article offers examples from investor practice and points out in which way allegations court cases and court verdicts make sense for investor behaviour

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

the process followed by ppp data on the properties of linearity tests recent research has reported the lack of correct size in stationarity test for ppp deviations within a linear framework however theoretically well motivated nonlinear models such as the estar appear to parsimoniously fit the ppp data and provide an explanation for the ppp puzzle employing monte carlo experiments we analyze the size and power of the nonlinear tests against a variety of nonstationary hypotheses we also fit the estar model to data from high inflation economies our results provide further support for estar specification

real exchange rate behavior abstract using random simulations with artificial data with identical sample characteristics to the long sample exchange rate data employed by lothian and taylor lothian j r and taylor m p 1996 the recent float from the perspective of the past two centuries journal of political economy 104 488 509 we show that standard unit root tests have extremely low power over sample sizes corresponding to the recent float the probability of rejecting the null hypothesis when it is false is extremely low with 20 years or even 50 years of data and only reaches an acceptable level over much longer spans

long memory in foreign exchange rates using the geweke porter hudak test we find evidence of long memory in exchange rate data this implies that the empirical evidence of unit roots in exchange rates may not be robust to long memory alternatives fractionally integrated autoregressive moving average arfima models are estimated by both the time domain exact maximum likelihood ml method and the frequency domain approximate ml method impulse response functions and forecasts based on these estimated arfima models are evaluated to gain insight into the long memory characteristics of exchange rates some tentative explanations of the long memory found in the exchange rates are discussed

short run independence of monetary policy under pegged exchange rates and effects of money on exchange rates and interest rates this paper examines the effects of money supply changes on exchange rates interest rates and production in an optimizing two country model in which some sectors of the economy have predetermined nominal prices in the short run and other sectors have flexible prices money supply shocks have liquidity effects both within and across countries and induce a cross country real interest differential the model predicts that liquidity effects are highly nonlinear and are not likely to be captured well empirically by linear models particularly those involving only a single country a striking implication of the model is that countries have a significant degree of short run independence of monetary policy even under pegged exchange rates copyright 1997 by ohio state university press

the purchasing power parity persistence paradigm abstract rogoff journal of economic literature 1996 34 647 668 describes the remarkable consensus of 3 5 year half lives of purchasing power parity deviations among studies using long horizon data these studies however focus on rejections of unit roots in real exchange rates and do not use appropriate techniques to measure persistence our half life estimates explicitly account for serial correlation sampling uncertainty and most importantly small sample bias calculating confidence intervals as well as point estimates for long horizon and post 1973 data we find that even though most of the point estimates lie within the 3 5 year range univariate methods provide virtually no information regarding the size of the half lives

purchasing power parity in less developed and transition economies a review paper abstract the concept of purchasing power parity ppp has been the subject of numerous studies many of which have been unable to prove conclusively this core principle of international finance although industrialized countries have received most of the attention studies that focus on less developed and transition economies have also attained mixed results this study surveys trends in this branch of the literature highlighting the econometric advances that have sought to solve this puzzle while pointing out that more needs to be done to address the reasons that might cause ppp not to hold

median unbiased estimation in df gls regressions and the ppp puzzle using median unbiased estimation recent research has questioned the validity of rogoff s remarkable consensus of 3 5 year half lives of deviations from ppp these half life estimates however are based on estimates from regressions where the resulting unit root test has low power we extend median unbiased estimation to the df gls regression of elliott rothenberg and stock 1996 we find that median unbiased estimation based on this regression has the potential to tighten confidence intervals for half lives using long horizon real exchange rate data we find that the typical lower bound of the confidence intervals for median unbiased half lives is just under 3 years thus while previous confidence intervals for half lives are consistent with virtually anything our tighter confidence intervals now rule out economic models with nominal rigidities as candidates for explaining the observed behavior of real exchange rates therefore while we obtain more information using efficient unit root tests on longer term data this information moves us away from solving the ppp puzzle

was it real the exchange rate interest differential relation over the modern floating rate period in this paper we explore the relationship between real exchange rates and real interest rate differentials in the united states germany japan and the united kingdom contrary to theories based on the joint hypothesis that domestic prices are sticky and monetary disturbances are predominant we find little evidence of a stable relationship between real interest rates and real exchange rates we consider both in sample and out of sample tests one hypothesis that is consistent with our findings is that real disturbances such as productivity shocks may be a major source of exchange rate volatility this paper investigates the empirical relationship between major currency real exchange rates and real interest rates over the modern post march 1973 flexible rate experience the exchange rates examined here include the dollar mark dollar yen and dollar pound rates our two major findings are as follows first the data do not indicate a strong correspondence between real interest rate differentials short term or long term and real exchange rates this finding appears to conflict with the predictions of most monetary and portfolio balance models of exchange rate determination though the conflict can be substantially reconciled if aggregate disturbances are primarily real in nature i e changes in productivity tastes etc it is true that in many cases the sign of the estimated exchange rate interest rate differential relationship is consistent with the possible predominance of financial market disturbances but the relationship is not stable enough to be statistically significant second although one does find some evidence of a unit root in both real exchange rates and long term but not shortterm real interest differentials these two series do not appear to be linearly cointegrated hence the nonstationarity or near nonstationarity in the two series cannot be attributed to the same factor in section i we briefly describe a class of small scale monetary models of exchange rate determination the importance of this class of models for empirical work derives from its strong predictions about how the exchange rate will move

one man one dollar campaign contribution limits equal influence and political communication arguably the most important campaign finance regulations in u s federal elections are limits imposed on individual campaign contributions one of the principal arguments in support of these contribution limits has been that they equalize the influence of individual donors and thereby cause candidates aggregate financial resources to more accurately reflect public support i construct a formal model to evaluate this argument the analysis shows that a necessary condition for it to apply is that a candidate s reliance on large contributions is negatively related to voter preferred characteristics which cannot be credibly revealed through campaign advertisements using data on elections to the house of representatives between 1992 and 2000 i find no evidence that such a relationship exists this result casts doubt on the equalization argument in support of campaign contribution limits

media markets special interests and voters abstract this paper examines the role of mass media in countering special interest group influence i use the concentration of campaign contributions from political action committees to proxy for special interests capture of us senate candidates from 1980 to 2002 and compare the reaction of voters to increases in concentration in two different types of media markets in state media markets and out of state media markets unlike in state media markets out of state markets focus on neighboring states politics and elections thus if citizens punish political capture increases in concentration of special interest contributions to a particular candidate should reduce his vote share in in state counties relative to the out of state counties where the candidate receives less coverage i find that a one standard deviation increase in concentration of special interest contributions to incumbents reduces their vote share by about 0 5 to 1 5 percentage points in in state counties relative to the out of state counties robustness checks suggest that these results are not driven by omitted senator characteristics or by differences between in state and out of state counties along dimensions other than the media environment

mean reversion of real exchange rates in high inflation countries we test for mean reversion in real exchange rates using data from five countries four of which have experienced episodes of high inflation using monthly data for argentina brazil chile colombia and israel we find that a stochastic unit root model is typically appropriate brazil is the exception kalman filter estimates of the stochastic unit roots show sharp deviations from unity associated with high inflation episodes this suggests that stochastic unit root models are a more appropriate way to model mean reversion in real exchange rates for high inflation countries than models with fixed rates of mean reversion

real exchange rate behavior the recent float from the perspective of the past two centuries using annual data spanning two centuries for dollar sterling and franc sterling real exchange rates we find strong evidence of mean reverting real exchange rate behavior using simple stationary autoregressive models estimated on prefloat data we easily outperform nonstationary real exchange rate models in dynamic forecasting exercises over the recent float such stationary univariate equations explain 60 80 percent of the in sample variation in real exchange rates although the degree of short run persistence may be high the econometric estimates imply a half life of shocks to the real exchange rate of about 6 years for dollar sterling and a little under 3 years for franc sterling

the long run volatility puzzle of the real exchange rate abstract this paper documents large cross country differences in the long run volatility of the real exchange rate it shows that the real exchange rate of developing countries is approximately three times more volatile than the real exchange rate in industrial countries the paper shows that this difference in volatility cannot be explained by the fact that developing countries face larger shocks both real and nominal recurrent currency crises or by different elasticities to these shocks arch estimations find a much higher persistence of deviations of the variance of the rer from its long run value when the economy suffers shocks of various kinds

policy convergence the exchange rate mechanism and the misalignment of exchange rates some tests of purchasing power parity and generalized purchasing power parity the paper focuses on the convergence issues and the long run credibility of the european monetary system ems and more specifically on the evaluation of the effectiveness of the exchange rate mechanism erm in generating a stabilizing effect on real exchange rates across member countries for this purpose we execute some tests of long run purchasing power parity ppp for an erm group and a non erm group of countries using both the engle and granger procedure and the more powerful johansen cointegration technique we also execute a test of generalized ppp exploiting an idea developed by enders and hurn testing for ppp in a multicountry setting may be a useful methodology to identify the optimal currency area suggested by the data generation process on the basis of the reported homogeneity of real exchange rate behaviour of the countries considered

on exchange rates nominal and real abstract the paper first develops an australian commodity currency exchange rate model which is extended to deal with real exchange rates as well the nominal and real exchange rate versions are then tested on swiss data for the post bretton woods period while the model tracks the swiss franc nominal exchange rate vis a vis the dollar and the major european currencies very well swiss ppp real exchange rates are found to be heavily contaminated with measurement error as that error explains the large co movements in nominal and ppp real exchange rates those co movements are largely irrelevant to the ppp debate

can exchange rate variations or trade policy alter the equilibrium current account abstract paul krugman has pointed out that much work needs to be done before the intertemporal open economy model can replace the open economy is lm model as a guide to policy making the objective here is to take a step in this direction by examining if an exogenous increase in world demand for home goods as via trade policy can improve the equilibrium current account within an open economy intertemporal model in the process the paper explores the theoretical issue as to whether a variation in the real exchange rate can alter the difference between saving and investment the key idea is that uncovered interest parity plus some degree of mean reversion in the real exchange rate imply that a modern version of the laursen metzler harberger effect is operative the result is that a policy induced increase in the trade balance will alter the real exchange rate which in turn increases the difference between home saving and investment and thereby improves the equilibrium current account

exchange rate mean reversion from real shocks within an intertemporal equilibrium model abstract the post bretton woods era has been characterized by real exchange rates that exhibit mean reversion with mixed evidence as to whether this reversion is partial ppp never holds or essentially complete this paper generates these stylized facts theoretically by synthesizing a simple intertemporal open economy model with the elasticities approach to the current account a central feature of the model is the existence of non traded goods the model can generate partial or approximately complete mean reversion for the real exchange rate depending on parameter values if innovations in output are made up of permanent and temporary components in addition temporary output shocks generate a type of hysteresis wherein the short run path for the exchange rate permanently alters its long run equilibrium value

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

nonlinear mean reversion to purchasing power parity exponential smooth transition autoregressive models and stochastic unit root processes nonlinear exponential smooth transition autoregressive estar models are recently very popular in modelling the deviation from purchasing power parity this article shows that there is a close relation between the estar models estimated in taylor et al 2001 and stochastic unit root stur processes of granger and swanson 1997 and mccabe and tremayne 1995 also for a post bretton woods sample period the real exchange rates from four major countries are tested if they are better described as i 1 estar or stur processes

the search for equilibrium relationships in international finance the case of the monetary model abstract this paper considers some of the main long run equilibrium relationships in international finance we supplement the phillips perron test which has a unit root under the null with the new kps test statistic which is based on a stationary null and apply them to the various exchange rate fundamentals the application of the johansen test for multiple cointegrating factors finds evidence of the existence of stable money demand functions in both the usa and uk with relatively short lived perturbations however there appears to be insufficient information in the data to distinguish whether the real exchange rate has a unit root or is persistent and mean reverting the consequent persistent deviations from purchasing power parity appears the only source of rejection of the equilibrium monetary model

campaign finance and voter welfare with entrenched incumbents two candidates compete for elective office each candidate has information she would like to reveal to the voters but this requires costly advertising the candidates can solicit contributions from interest groups to finance such advertising these contributions are secured by promises to perform favors for the contributors should the candidate win the election voters understand this and elect the candidate they like best taking into account their expectations about promises to special interests there is an incumbency advantage in fundraising which is sometimes so great that the incumbent faces no serious opposition at all introducing partial public financing through matching funds improves voter welfare in districts that have advertising under the decentralized system while it can reduce welfare in other districts the optimal policy must strike a balance between these two effects

size distortions of tests of the null hypothesis of stationarity evidence and implications for the ppp debate abstract tests of the null hypothesis of stationarity against the unit root alternative play an increasingly important role in empirical work in macroeconomics and in international finance we show that the use of conventional asymptotic critical values for stationarity tests may cause extreme size distortions if the model under the null hypothesis is highly persistent this fact calls into question the use of these tests in empirical work we illustrate the practical importance of this point for tests of long run purchasing power parity ppp under the recent float we show that the common practice of viewing tests of stationarity as complementary to tests of the unit root null will tend to result in contradictions and in spurious rejections of long run ppp while the size distortions may be overcome by the use of finite sample critical values the resulting tests tend to have low power under economically plausible assumptions about the half life of deviations from ppp thus the fact that stationarity is not rejected cannot be interpreted as convincing evidence in favor of mean reversion only in the rare case that stationarity is rejected do size corrected tests shed light on the question of long run ppp

rebuttal to jacobson s new evidence for old arguments in salvation for the spendthrift incumbent green and krasno 1988 we argue that incumbent spending has a sizable effect on the house vote this stands in direct contrast to professor jacobson s well known view that campaign spending by incumbents is not related to how well they do at the polls jacobson 1983 42 emphasis in the original in his rebuttal jacobson criticizes our findings on three grounds first he argues that the instrument we use in our twostage least squares model for incumbent spending is invalid second he complains that our model fails to account for diminishing marginal returns finally jacobson asserts that our findings for the 1978 election do not hold for subsequent years in this paper we briefly respond to these criticisms using data drawn from the 1976 86 elections we demonstrate that incumbent spending has a substantial influence on the vote we then critique the assumptions underlying jacobson s individual level analysis in the end we find little empirical support for jacobson s contention that the effects of incumbent spending are substantively small and statistically insignificant much of jacobson s essay focuses on the question of whether incumbent spending is as effective as challenger spending this comparative question however occupies a minor place in our salvation essay our main objective was to show that incumbent spending has more than a trivial influence on electoral outcomes we do not disagree in fact with jacobson s position that the marginal effect of challenger spending exceeds that of incumbent spending but this is not the only way to gauge the relative importance of incumbent and challenger spending another way would be to compare the yield the number of votes purchased by challengers and incumbents in each district this standard takes into account the fact that incumbents typically outspend their opponents data from 1976 86 indicate that the yield from incumbent spending is both considerable and on par with the yield from challenger expenditures in sum access to financial resources represents one of the important advantages of incumbency for the spendthrift incumbent is able to offset the effects of campaign expenditures by the opposition

stakeholder duties on the moral responsibility of corporate investors stakeholder theory usually focuses on the moral responsibility of corporations towards their stakeholders this article takes the reverse perspective to shed light on the moral responsibility of stakeholders specifically investors or financiers it explicates a distinction between two types of financiers creditors and shareholders many intuitively judge that shareholders have greater or more extensive moral responsibility for the actions of the corporations they invest in than do bondholders and other creditors examining the merits of possible arguments for or against treating owners and creditors differently elucidates which arguments can support the moral duties of investors generally and different duties for different groups of investors specifically the paper considers three possible lines of arguments rooting investors responsibility respectively in how they enable corporate conduct how they benefit from it and to what extent they are complicit in it the paper argues that a notion of complicity is the only tenable ground for holding investors liable sketches an account of complicity based on the recent philosophical literature on collective intention and collective action and concludes that shareholders but not creditors can generally be seen as complicit on this account

long memory in us disaggregated petroleum consumption evidence from univariate and multivariate lm tests for fractional integration previous studies that have tested for a unit root in aggregate energy consumption have potentially reached misleading conclusions because they fail to allow for the possibility that energy consumption might be fractionally integrated and do not distinguish between different types of energy consumption this study tests for long memory in disaggregated petroleum consumption in the united states using univariate and multivariate lagrange multiplier lm tests for fractional integration the results point strongly to the need to distinguish between different forms of energy consumption and allow for a generalization of the i 0 i 1 dichotomy when considering the order of integration of energy consumption allowing for short run dynamics the univariate test suggests that less than 50 of the series are fractionally integrated consistent with expectations the non stationary series are found to have the highest mean and standard deviation the multivariate test suggests that petroleum consumption in the commercial and industrial sectors is clearly fractionally integrated when allowing for short run dynamics and as such exhibits persistent effects while petroleum consumption in the residential sector is a stationary process

real exchange rates under the gold standard purchasing power parity is one of the most important equilibrium conditions in international macroeconomics empirically it is also one of the most hotly contested numerous recent studies for example have sought to determine the validity of purchasing power parity using data from the post bretton woods float and have reached different conclusions we assert that most such studies are flawed for two reasons first the post 1973 data contain by definition only a very limited amount of the low frequency information relevant for examination of long run parity second the dynamic econometric techniques used to model deviations from parity are typically quite crude with respect to admissible low frequency dynamics both deficiencies are rectified in the present paper with dramatic results we construct a new data set of 16 real exchange rates covering more than a century of the classic gold standard period and we study deviations from parity using long memory models that allow for subtle forms of mean

multi country evidence on the behavior of purchasing power parity under the current float abstract using panel data for the united states and 22 other oecd countries for the current float this paper presents evidence that despite substantial short term perturbations purchasing power parity actually performed much better than commonly believed average rates of growth of real exchange rates over long horizons bear little relationship either to average rates of growth of nominal exchange rates or to average inflation differentials thus implying a close to one to one relation between average rates of growth of nominal exchange rates and average inflation differentials panel data variants of standard unit root tests suggest that the real exchange rates of these countries can be characterized as mean reverting

interest groups campaign contributions and probabilistic voting this essay develops a simple model to analyze the impact of campaign contributions on electoral policy decisions of candidates for office interest groups here are firms that select contributions under the assumption that candidates policies and opposing groups donations remain unaltered candidates however recognize that their policy choices affect contributions campaign contributions are used by candidates to affect policy oriented voters perceptions of candidates positions in this framework the introduction of campaign contributions may affect candidates electoral policies and if they do then they benefit surely exactly one of the two interest groups

using repeat challengers to estimate the effect of campaign spending on election outcomes in the u s house previous studies of congressional spending have typically found a large positive effect of challenger spending but little evidence for effects of incumbent spending those studies however do not adequately control for inherent differences in vote getting ability across candidates high quality challengers are likely to receive a high fraction of the vote and have high campaign expenditures even if campaign spending has no impact on election outcomes to avoid that bias this paper examines elections in which the same two candidates face one another on more than one occasion differencing eliminates the influence of any fixed candidate or district attributes estimates of the effects of challenger spending are an order of magnitude below those of previous studies campaign spending has an extremely small impact on election outcomes regardless of who does the spending campaign spending limits appear socially desirable but public financing of campaigns does not

the maturing of socially responsible investment a review of the developing link with corporate social responsibility this paper reviews the development of socially responsible investment sri over recent years and highlights the prospects for an increasingly strong connection with the practice of corporate social responsibility the paper argues that not only has sri grown significantly it has also matured in particular it has become an investment philosophy adopted by a growing proportion of large investment institutions this shift in sri from margin to mainstream and the position in which institutional investors find themselves is leading to a new form of sri shareholder pressure although this bears some resemblance to lobbying campaigns which might take advantage of shareholder rights we seek to distinguish it as an important phenomenon in its own right one to which corporate executives are likely to be paying increasing attention in the years to come we further argue that this approach potentially meets some of the earlier ethical criticisms of certain forms of sri but ironically probably owes its existence to those pioneering approaches we conclude with some suggestions for further research to inform discussion of the issues highlighted in the paper

restaurant prices and the mexican peso 1 introduction balance of payment concerns facing latin american economies have caused international currency valuations to receive ongoing scrutiny throughout the past decade and a half given its importance to regional economic performance border areas between countries such as the united states and mexico canada and the united states colombia and venezuela and ecuador and colombia also monitor exchange rate developments very closely typically one of two types of monitoring tools have been utilized for formal econometric work in this branch of international economics nominal purchasing power parity ppp indices and trade weighted real exchange rates both of the latter rely on easily obtained macroeconomic data a widely cited exception to those macroeconomic data approaches is published quarterly by the economist magazine utilizing hamburger prices from a well known restaurant corporation with worldwide franchises the research at hand develops a similar tool utilizing a variety of international restaurant franchises with operations in el paso texas and ciudad juarez chihuahua on the border between the united states and mexico more than 70 signature menu item prices are sampled every month in order to develop an exchange rate measure based on the so called law of one price hypothesis parametric and nonparametric statistical testing is then conducted to examine whether the border restaurant price ratio bears any relationship to the exchange rate value of the peso over the 36 month sample period for which data are available july 1997 june 2000 section 2 of the paper includes a literature review data and methodology are described in section 3 section 4 provides an empirical analysis of the results concluding remarks and suggestions for future research are included in section 5 2 literature review exchange rate monitoring has become a staple of international corporate and public policy analysis in the two plus decade period subsequent to the demise of the bretton woods fixed exchange rate system a common approach is the measurement of trade weighted real exchange rates designed for country risk analysis and balance of payments pressure gauging such indexes will generally indicate overvaluation with respect to a preselected base with values in excess of 100 and undervaluation with values below 100 batten and belongia 1986 fullerton 1989 another practice is the calculation of theoretical nominal exchange rates under a ppp approach beltran del rfo 1999 the latter are often popular among financial market analysts because they are defined in the actual units in which trades are conducted international restaurant franchise menu pricing has given rise to a new empirical variant on the law of one price in recent years the economist magazine runs a periodic comparison of hamburger prices to nominal exchange rates for a group of 20 plus countries the economist 1998 hamburger prices in local currency units are divided by a corresponding dollar price whenever the resulting price ratio is higher than the exchange rate it implies that the local currency is overvalued when the ratio is below the prevailing exchange rate it implies the opposite the popularity of this readily identifiable index has spawned several subsequent studies that study both geographic and time series characteristics and implications of the approach while cumby 1996 and ong 1997 find fairly good evidence in favor of the hamburger index pakko and pollard 1996 conclude that nontradability and institutional factors cause it to perform unreliably a growing number of studies examine the ppp principle using data that involve more than one product and take into account geographic factors such as distance engel and rogers 1996 parsley and wei 2000 in one such effort james gerber sampled individual menu items from seven restaurants in san diego and tijuana regents of the university of california 1997

are campaign contributions a form of speech evidence from recent us house elections this paper investigates the effects of the sources ofcandidates campaign funding on their electoral outcomes withparticular emphasis on whether candidates who rely on a narrowbase of funding suffer adverse electoral consequences anextensive dataset consisting of over 650 000 contributions tohouse candidates in elections from 1980 to 1992 is used theresults reveal a negative relationship between theconcentration of contributions and voteshare for open seatcandidates and challengers this finding appears to havesignificant implications for some of the empirical premisesunderlying the u s supreme court s landmark buckley v valeo decision at the very least it represents an importantstylized fact about us elections that is robust over 1980 1992 period

measuring the persistence of deviations from purchasing power parity with a fractionally integrated star model abstract empirically elements of both fractional long memory and threshold non linearity are present in the real exchange rates of the g 7 countries against the us notably in the eu countries estimated half lives of deviations from ppp using median unbiased corrections to conventional linear autoregressive models corroborate existing evidence related to the ppp paradox as half lives range from at least four years to an infinite number of years in contrast for each eu country accounting for threshold non linearity results in estimated half lives that can be less than three years even with the allowance for fractional long memory

market frictions and real exchange rates abstract one explanation for the failure of purchasing power parity ppp is that market frictions impede trade allowing departures from ppp to grow quite large without precipitating goods arbitrage if this explanation is correct then other things equal large deviations from ppp should be less persistent than small differences this paper examines this prediction over the modern floating rate era the outcome is surprising between most countries large deviations from ppp appear to be at least as persistent as small deviations and perhaps even more so the exceptions are for some intra ec real exchange rates the implication is that market frictions alone do not explain the chimerical nature of ppp

long run purchasing power parity during the recent float abstract this paper examines the relevance of long run purchasing power parity ppp which allows for measurement errors during the recent floating exchange rate period previous empirical studies generally fail to find support for long run ppp over this period in this paper in this paper the cointegration property of exchange rates and prices is examined using maximum likelihood procedure and we find significant evidence favorable to long run ppp further tests for symmetry and proportionality indicate that these two conditions are not generally with the data the results support the hypothesis of long run ppp with measurement errors in prices

electoral competition and special interest politics have fixed positions on some issues but vary their positions on others in order to attract votes and campaign contributions in this context we examine whether special interest groups are governed by an electoral motive or an influence in their campaign giving and how their contributions affect the equilibrium platforms we show that each party is induced to behave as if it were maximizing a weighted sum of the aggregate welfares of informed voters and members of special interest groups the party that is expected to win a majority of seats caters more to the special interests

searching for nonlinearities in real exchange rates a recent innovation in modeling exchange rates has been the use of nonlinear techniques such as threshold autoregressive models and its smooth transition variants this paper investigates the smooth transition autoregressive star modeling strategy in an application to real exchange rates the key findings are as follows first using the methodology advocated by terasvirta 1994 we find evidence of nonlinear dynamics for several of the spot dollar real exchange rates using monthly data on five of the g7 countries however once estimated we find that the star specification is appropriate for only one of the three exchange rate series indicated to be an estar process moreover using simulations we show that the underlying methodology used to detect nonlinearities in the data exhibit substantial size biases which we attribute to influential observations we also investigate an alternative nonlinear specification and find that we can model the dollar sterling and the dollar lira real exchange rates better as an open loop tar process instead of a setar process

real exchange rates under the gold standard can they be explained by the trend break model abstract we investigate whether real exchange rates under the gold standard can be modeled as stationary around a broken trend using both conventional unit root and sequential trend break tests we clearly reject the unit root null for 14 of the 16 exchange rates studied by diebold husted and rush journal of political economy 1991 99 and provide some evidence against a unit root for another we interpret our results as being complementary to the evidence for fractional integration found by diebold husted and rush in both cases the unit root null can be decisively rejected if the alternative is more flexible than a deterministic trend without breaks

quantile unit root test and ppp evidence from 23 oecd countries abstractapplication of six different univariate unit root tests to real effective exchange rates of 23 oecd countries supports their stationarity or purchasing power parity theory ppp only in five countries a result consistent with previous research that is known as ppp puzzle however descriptive statistics of each effective rate reveals a clear sign of non normal distribution to account for this we use quantile unit root test which allows impact of different shocks to be realized at different quantiles when we applied this new test to the same rates number of countries in which ppp is supported increased to 16 apparently incorporating effects of shocks improves testing efficiency and provides more support for the ppp and reduces the severity of the puzzle

the effects of campaign spending in house elections new evidence for old arguments the question of how campaign spending affects election results remains open because the simultaneity problem has proven so intractable green and krasno s 1988 recent attempt to solve the problem and to demonstrate that marginal returns on spending are as great for incumbents as for challengers again comes up short a panel feature of the abc newslwashington post congressional district poll conducted during the 1986 elections offers a fresh perspective on the question analysis of changes in voting intentions during the final six weeks of the campaign shows that as the tainted ols studies have invariably suggested the amount spent by the challenger is far more important in accounting for voter s decisions than is the amount spent by the incumbent

political competition with campaign contributions and informative advertising this paper presents a theory of political competition with campaign contributions and informative political advertising policy motivated parties compete by selecting candidates and interest groups provide contributions to enhance the electoral prospects of like minded candidates contributions are used to finance advertising campaigns that provide voters with information about candidates ideologies voters update their beliefs rationally given the information they have received the paper uses the theory to analyze the welfare economics of contribution limits such limits are shown to redistribute welfare from ordinary citizens to members of interest groups jel d72 h40

a general equilibrium model of international portfolio choice we investigate in a two country general equilibrium model whether a bias in consumption towards domestic goods will necessarily lead to a preference for domestic securities we develop a model where investors are constrained to consume only from their domestic capital stock and where it is costly to transfer capital across countries in this model investors less risk averse than an investor with log utility bias their portfolios towards domestic assets investors more risk averse than log however prefer foreign assets thus this model suggests that it is unlikely that the portfolios observed empirically can be explained by the high proportion of domestic goods in total consumption we investigate in a two country general equilbrium model whether a bias in consumption toward domestic goods will necessarily lead to a preference for domestic assets in an investor s optimal portfolio we constrain investors to consume only from their domestic capital stock and introduce a proportional cost for transferring goods from one country this cost gives rise to endogenous deviations from the law of one price lop thus the home and foreign investors do not hold identical portfolios we show that an investor s optimal portfolio is biased towards domestic equity only if she is less risk averse than an investor with log utility investors with relative risk aversion greater than one exhibit a preference for the foreign asset this is because the exchange rate derived endogenously is negatively correlated with the return on the foreign asset and therefore the translated return on the foreign stock is less risky than that on the domestic stock thus the results of this model suggest that it is unlikely that the preference for domestic assets that is observed empirically can be explained by the high proportion of domestic goods in total consumption there exists a considerable body of literature documenting the gains from international diversification grubel 1968 was the first to propose that international diversification allows investors to attain lower return variances than those achievable by diversifying domestically this proposition relies on the correlation between stock indices across countries being significantly less

transactions costs and nonlinear adjustment in real exchange rates an empirical investigation eolquilibrium models of real exchange rate determination in the presence of transactions costs imply a nonlinear adjustment process toward purchasing power parity ppp conventional cointegration tests which ignore the effect of transactions costs may be biased against the long run ppp hypothesis our results using both monthly data for the interwar period and annual data spanning two centuries clearly reject the linear framework in favor of an exponential smooth transition autoregressive process the systematic pattern in the estimates of the nonlinear models provides strong evidence of mean reverting behavior for ppp deviations and helps explain the mixed results of previous studies

campaign advertising and voter welfare this paper investigates the role of campaign advertising and the opportunity of legal restrictions on it an electoral race is modeled as a signalling game with three classes of players many voters two candidates and one interest group the group has non verifiable insider information on the candidates quality and on the basis of this information offers a contribution to each candidate in exchange for a favorable policy position candidates spend the contributions they receive on non directly informative advertising this paper shows that 1 a separating equilibrium exists in which the group contributes to a candidate only if the insider information about that candidate is positive 2 although voters are fully rational a ban on campaign advertising can be welfare improving and 3 split contributions may arise in equilibrium and if they arise too often they are detrimental to voters

asian pacific real exchange rates real exchange rate behaviour is investigated for 11 asian pacific countries between 1976 and 1990 using a modified version of principal components analysis the standard principal component analysis is changed such that the results are independent of the numeraire currency for the full sample period the dominant asian exchange rate movements are relative to indonesia japan and the united states significant changes in the convariance structure have taken place since 1986 it appears that asian pacific real exchange rate movements since september 1986 are dominated by australia korea new zealand and japan this contradicts the popular notion of an emerging yen block in the asian pacific region

the swing voter s curse the authors analyze two candidate elections in which some voters are uncertain about the realization of a state variable that affects the utility of all voters they demonstrate the existence of a swing voter s curse less informed indifferent voters strictly prefer to abstain rather than vote for either candidate even when voting is costless the swing voter s curse leads to the equilibrium result that a substantial fraction of the electorate will abstain even though all abstainers strictly prefer voting for one candidate over voting for another copyright 1996 by american economic association

understanding the empirical literature on purchasing power parity the post bretton woods era abstract this paper argues that the empirical failure of statistical tests of ppp in post bretton woods data is largely due to the low power of the tests employed this result is demonstrated using monte carlo experiments on the size and power of different testing procedures a new procedure based on horvath and watson econometric theory 11 pp 984 1014 1995 has greater power than previous approaches using the horvath watson procedure we find moderate evidence in favor of ppp in the post bretton woods era

campaign spending with office seeking politicians rational voters and multiple lobbies abstract i introduce a microfounded model of campaign finance with office seeking politicians a continuum of voters and a large number of heterogeneous lobbies lobbies make contributions to politicians according to a common agency framework politicians use contributions to finance their electoral expenditures voters are not fooled by electoral expenditures they are influenced in a way that is consistent with the equilibrium behavior of lobbies and politicians the model is used to i determine the relation between campaign spending and the deviation from the median voter s preferred policy ii show the informational value of lobbies contributions iii evaluate the welfare implications of restricting campaign spending and iv interpret the empirical finding that campaign expenditures have a very low effect on election outcome although in equilibrium advertising provides voters with useful information under reasonable parameter values a ban on campaign contributions makes the median voter better off journal of economic literature classification numbers d72 d82 m37

purchasing power parity an analysis based on the evolutionary spectrum the bulk of the literature on the empirical validation of the purchasing power parity ppp has been based on cointegration although on rare occasions band spectrum analysis has also been used the former is tied down to the use of notional time in the analysis of systems away from equilibrium and the latter is circumscribed by the slutzky yule effect both these drawbacks are sought to be remedied in the present paper which seeks to bring to bear upon the ppp a new approach derived from the concept of a time varying spectrum both absolute and relative versions of the doctrine are tested for ten advanced economies over the post 1973 period uniform rejection of the ppp occurs with the us as base but with centring on the dm the evidence seems to be supportive of the ppp in its relative version for three european countries

electoral competition with informed and uninformed voters i present a model of electoral competition in which candidates raise campaign contributions by choosing policies that benefit interest groups and then expend those contributions to influence voters who are uninformed about the policies informed voters however vote based on those policies so candidates face a trade off between choosing a policy to generate funds to attract the uninformed vote and choosing a policy to attract the informed vote electoral equilibria are characterized for two categories of policies particularistic and collective in the case of particularistic policies the equilibrium policies of the candidates are separated if the proportion of uninformed voters is sufficiently high and the degree of separation is an increasing function of that proportion the model is extended to include the public financing of elections and incumbency advantages for the case of collective policies the candidates locate at the median of the ideal points of the informed voters and contributions are zero

towards solving the ppp puzzle evidence from 113 countries several different approaches have been followed by researchers to test the validity of purchasing power parity ppp since the introduction of the unit root tests researchers have applied a battery of these tests to determine whether the real exchange rates are stationary if the answer is in the affirmative ppp is validated while application of the standard augmented dickey fuller test has not provided much support for ppp a test that incorporates nonlinearity in the rates has under both tests however the null of nonstationary is tested against the alternative of stationarity in this article when we switch the null with the alternative and apply kwiatkowski et al 1992 test we provide relatively more support for the theory getting closer and closer towards solving the ppp puzzle