current publication lags in economics journals phe economics profession depends to a large degree upon its scholarly journals to disseminate the results and applications of its recently completed research the journal of economic literature is in fact evidence of that dependence much of the contents of each issue is devoted to an indexing of the current articles to facilitate both access to primary sources and quick cross referencing with related material but how recent are the results reported in the current literature how long does it usually take for a piece of research to evolve from a submitted manuscript to a published article to my knowledge only one study has confronted this question directly and it was published nearly 15 years ago in that study robert coe and irwin weinstock 1967 p 40 reported an average lag between submission and publication of 250 days 8 2 months for articles published in 1966 what has happened since there are no formal surveys to support the suspicion but there is evidence to suggest that the lags have actually increased some journals have begun to charge submission fees ostensibly to reduce the number of manuscripts they must review a plethora of specialized journals have emerged to provide new outlets for specialized papers and to relieve some of the burden from the traditional journals of more general scope one new journal economics letters has been founded completely in response to the lag problem it publishes short papers as quickly as possible in an effort to distribute at least the thrust of current research without a prolonged waiting period all of these responses to long lags lead to one question how severe are the current lags between submission and publication this brief note will report on the results of a survey that can begin to assess the current magnitude of the lag problem the major components of that problem and the success of the various efforts to alleviate it information about the lags involved in the 40 most recently published articles in each journal was solicited from the editors of 66 journals whose contents are routinely recorded in the jel twenty editors responded directly to the request and their reports formed the foundation of this study seven other journals were also in

aging and productivity among economists economists productivity over their careers and as measured by publication in leading journals declines very sharply with age there is no difference by age in the probability that an article submitted to a leading journal will be accepted rates of declining productivity are no greater among the very top publishers than among others and the probability of acceptance is increasingly related to the author s quality rather than the author s age

explaining instability in the stability and growth pact the contribution of member state power and euroskepticism to the euro crisis the stability and growth pact clearly failed to prevent the euro crisis we contend that the failure was due largely to the ability of the member states to undermine the pact s operation the european commission served as a watchdog to monitor fiscal performance the member states themselves however collectively had the ability to change the content of the reports for individual states we confirm the expectation that powerful member states had the most success in undermining the role of the commission perhaps more surprisingly we find supporting evidence for our argument that governments with euroskeptic populations behind them were also more successful in weakening the commission s warnings these results have broader theoretical implications concerning which mechanisms explain country specific outcomes under a shared rule another contribution is the creation of a new data set of european commission assessments of member state economic programs and council of minister revisions

provoking preferences unionization trade policy and the ilwu puzzle if any group of american blue collar workers has benefited from the growth of trade it is the unionized dockworkers along the us west coast nevertheless the international longshore and warehouse union ilwu representing these workers is vocally opposed to trade liberalization we examine several competing explanations for this puzzle and evaluate them by tracing the union s stance on trade over several decades we also use an original survey to compare ilwu affiliates attitudes on trade with those of nonmembers with otherwise similar characteristics consistent with a model of organizational socialization the data support the hypothesis that ilwu membership affects the members revealed political opinions the data are difficult to reconcile with standard theories of international trade our findings indicate that the political support for trade depends not just on voters structural positions in the economy but also on the organizations and networks in which they are embedded

on the prevalence of trends in primary commodity prices abstract this paper applies new time series procedures to examine the prebisch singer hypothesis of a secular deterioration in relative primary commodity prices specifically we allow for up to two structural breaks in 24 price series covering the 1900 98 period for the majority of commodities it is shown that the trend is not well represented by a single downward slope but instead by a shifting trend that often changes sign over the sample period unlike some recent work that has also allowed for structural breaks these results provide much less support for the prebisch singer hypothesis

resolving the regulator s dilemma international coordination of banking regulations since the early 1970s bankers have developed a host of new financial instruments and practices these innovations have altered the nature of banking and this in turn has complicated the task of banking regulation national regulations have become largely ineffective in monitoring the safety and soundness of global banks the resulting market changes and the growth of knowledge about the risks facing the international financial system have prompted governments to hold multilateral discussions regarding banking regulation however the task of international regulation has been compromised by the desire of states to attract foreign and domestic investment to the financial sector since states wish to create or maintain competitive banking institutions they have often deregulated in order to provide banks with a cost advantage in the international marketplace this competitive deregulation undermines collaborative efforts under the leadership of the united states and great britain a multilateral agreement on bank capital standards was reached in december 1987 this agreement suggests that the interplay of market factors consensual knowledge and leadership by powerful states can lead to international policy coordination the article describes the multilateral negotiations that led to this banking accord

evolving standards for academic publishing a q r theory this paper develops models of quality standards to examine two trends academic journals increasingly require extensive revisions of submissions and articles are becoming longer and changing in other ways papers are modeled as varying along two quality dimensions q reflects the importance of the main ideas and r other aspects of quality observed trends are regarded as increases in r quality a static equilibrium model illustrates comparative statics explanations a dynamic model in which referees with a biased view of their own work learn social norms for weighting q and r is shown to produce a long gradual evolution of social norms

the commodity terms of trade unit roots and nonlinear alternatives a smooth transition approach market price dynamics for north american oriented strand board markets are examined specifically the role of transactions costs are examined vis a vis the law of one price weekly data for the january 3rd 1995 through april 14th 2006 period are used in the analysis nonlinearities induced by unobservable transactions costs are modeled by estimating smooth transition autoregressions stars results indicate that nonlinearity is an important feature of these markets and that the parity relationships implied by economic theory are generally supported by the star models implications for the efficiency of spatial market linkages are examined by estimating generalized impulse response functions

democracy and national economic performance the preference for stability appear to arise because democracies ameliorate the effects of social cleavages another mechanism that might explain democratic stability when growth and volatility are jointly examined democracies reveal highly favorable economic results oes democracy affect national economic performance and if so how no question is more central to the study of political economics almost all previous work on democracy and economic performance has focused exclusively on growth rates with contradictory and confusing results in this article we argue that to reveal the impact of democratic institutions on economic performance scholars must consider two dimensions of economic performance growth rate and volatility we begin with a novel hypothesis economic policy in democracy is risk avoiding relative to policy in nondemocracies 1 because voters are riskaverse they penalize incumbent governments for economic volatility and democratic governments respond accordingly in nondemocracies we posit that elites are more likely to seek risk that voters would reject consequently autocracies produce systematically more economic volatility than

bridging dsge models and the raw data abstract a method to estimate dsge models using the raw data is proposed the approach links the observables to the model counterparts via a flexible specification which does not require the model based component to be located solely at business cycle frequencies allows the non model based component to take various time series patterns and permits certain types of model misspecification applying standard data transformations induces biases in structural estimates and distortions in the policy conclusions the proposed approach recovers important model based features in selected experimental designs two widely discussed issues are used to illustrate its practical use

using usda forecasts to estimate the price flexibility of demand for agricultural commodities we estimate the general equilibrium price flexibility of demand for corn and soybeans using monthly changes in expected supply published by the usda our estimates reflect the demand response to a one year supply shock and thus correspond to the inverse demand elasticity we derive the conditions under which our estimates are consistent and we show how demand flexibility varies by season inventory time horizon and demand composition at average inventory and without accounting for corn ethanol use we obtain price flexibility estimates of 1 35 and 1 03 for corn and soybeans respectively current corn ethanol production levels are associated with much larger absolute flexibilities for both commodities copyright 2012 oxford university press

a reexamination of trends in primary commodity prices this paper conducts a reexamination of the prebisch singer hypothesis by employing the unit root test proposed by lee and strazicich 2003 and lee and strazicich 2004 that allow for up to two structural breaks given the higher power of these tests compared to the zivot and andrews 1992 and lumsdaine and papell 1997 tests rejection of the null can be considered as genuine evidence of stationarity the main findings of this paper are that eleven out of twenty four commodity prices are found to be difference stationary implying that shocks to these commodities tend to be permanent in nature the remaining thirteen prices are found to exhibit trend stationary behavior with either one or two structural breaks most of the commodities that do not exhibit difference stationary behavior seem to contain no significant trends there are fewer cases in relation to past studies of commodities that display negative trends thereby weakening the case for the prebisch singer hypothesis

detrending and business cycle facts a user s guide this note argues that it is hardly the case that the profession is fully aware that the application of di erent filters to the data leads to di erent outcomes and that we have enough evidence to claim that these di erences are unimportant to evaluate the fit models to the data 1998 elsevier science b v all rights reserved jel classification b41 e32

bureaucratic discretion or congressional control regulatory policymaking by the federal trade commission this paper extends stigler and peltzman s approach to regulation by incorporating a legislature the model yields comparative statics results and hence testable implications the paper then tests between two opposing approaches about regulatory agency behavior the first assumes agencies operate independently of the legislature and hence exercise discretion the second assumes that congress controls agency decisions the recent behavior of the federal trade commission provides the empirical setting substantial evidence is found for the specific predictions of the model including the hypothesis of systematic congressional influence over ftc decisions

why are stabilizations delayed when a stabilization has significant distributional implications e g tax increases to eliminate a large budget deficit socioeconomic groups may attempt to shift the burden of stabilization onto other groups the process leading to stabilization becomes a war of attrition each group attempting to wait the others out and stabilization occurring only when one group concedes and bears a disproportionate share of the burden the authors solve for the expected time of stabilization in a model of rational delay and relate it to several political and economic variables they motivate this approach and its results by comparison to historical and current episodes copyright 1991 by american economic association

multiple wage bargaining systems in the single european currency area little attention in the emu literature has been paid to the interaction between central bank monetary rules and systems of collective wage bargaining analytically and empirically coordinated wage bargaining systems respond with real wage restraint to non accommodating monetary policy since wage determination is dominated by collective bargaining in all the emu member states and wage coordination within the member states has grown since 1980 this is a topic of potential importance in particular the replacement of the bundesbank directly targeting german inflation by an ecb targeting european inflation has removed a major institutional support of wage restraint in germany the consequences of this for emu are worked out under two scenarios that inflation expectations will be generated by ecb monetary policy and that they will reflect german inflation outcomes possible institutional developments are discussed including government union bargains the bundesbank has also played a major role in maintaining fiscal rectitude by targeting excess fiscal deficits in germany again its replacement by the ecb targeting if at all european rather than german fiscal policy loosens fiscal constraints for underlying structural reasons therefore it is possible that germany and other emu countries will move to a period of fiscal activism with wage restraint and low inflation purchased through social contract negotiations

the empirical merit of structural explanations of commodity price volatility review and perspectives this paper presents both the history of and state of the art in empirical modeling approaches to the world commodity price volatility the analysis builds on the storage model and key milestones in its development specifically it is intended to offer a reader unfamiliar with the relevant literature an insight into the modeling issues at stake from both a historical and speculative viewpoint the review considers primarily the empirical techniques designed to assess the merits of the storage theory it does not address purely statistical approaches that do not rely on storage theory and that have been studied in depth in other streams of the commodity price literature the paper concludes with some suggestions for future research to try to resolve some of the existing empirical flaws and hopefully to increase the explanatory power of the storage model

price stability and central bank independence discipline credibility and democratic institutions despite mixed empirical evidence in the past two decades central bank independence cbi has been on the rise under the assumption that it ensures price stability using an encompassing theoretical approach and new yearly data for de jure cbi seventy eight countries 1973 2008 we reexamine this relationship distinguishing the role of printing less money discipline from the public s beliefs about the central bank s likely actions credibility democracies differ from dictatorships in the likelihood of political interference and changes to the law because of the presence of political opposition and the freedom to expose government actions cbi in democracies should be directly reflected in lower money supply growth besides being more disciplinarian it also ensures a more robust money demand by reducing inflation expectations and therefore inflation empirical results are robust and support a discipline effect conditioned by political institutions as well as a credibility effect

stocks to use ratios and prices as indicators of vulnerability to spikes in global cereal markets we identify critical stocks to use ratios surs for major grains and for an index of total calories from these grains the latter appears to be a promising indicator of vulnerability to large price spikes when the current price shows no cause for concern more generally our results suggest that stocks data though no doubt unreliable can be valuable complements to price data as indicators of vulnerability to shortages and price spikes

central bank communication and monetary policy a survey of theory and evidence over the last two decades communication has become an increasingly important aspect of monetary policy these real world developments have spawned a huge new scholarly literature on central bank communication mostly empirical and almost all of it written in this decade we survey this ever growing literature the evidence suggests that communication can be an important and powerful part of the central bank s toolkit since it has the ability to move financial markets to enhance the predictability of monetary policy decisions and potentially to help achieve central banks macroeconomic objectives however the large variation in communication strategies across central banks suggests that a consensus has yet to emerge on what constitutes an optimal communication strategy

detrending stylized facts and the business cycle the stylized facts of macroeconomic time series can be presented by fitting structural time series models within this framework we analyse the consequences of the widely used detrending technique popularised by hodrick and prescott 1980 it is shown that mechanical detrending based on the hodrick prescott filter can lead investigators to report spurious cyclical behaviour and this point is illustrated with empirical examples structural time series models also allow investigators to deal explicitly with seasonal and irregular movements that may distort estimated cyclical components finally the structural framework provides a basis for exposing the limitations of arima methodology and models based on a deterministic trend with a single break

the prebisch singer hypothesis four centuries of evidence we employ a unique data set and new time series techniques to reexamine the existence of trends in relative primary commodity prices the data set comprises 25 commodities and provides a new historical perspective spanning the seventeenth to the twenty first centuries new tests for the trend function robust to the order of integration of the series are applied to the data results show that eleven price series present a significant and downward trend over all or some fraction of the sample period in the very long run a secular deteriorating trend is a relevant phenomenon for a significant proportion of primary commodities 2010 the president and fellows of harvard college and the massachusetts institute of technology

maximum likelihood estimation of the standard commodity storage model evidence from sugar prices we present a maximum likelihood estimator for the standard commodity storage model with stockouts based on prices only while it imposes no additional assumptions on the model the maximum likelihood estimator has small sample properties superior to those of the pseudo maximum likelihood approach we provide a proof that is crucial for applying our estimator to the model with normal harvests and possibly unbounded prices thereby eliminating an inconsistency in the empirical storage model literature applying our maximum likelihood estimator to a series of annual sugar prices from 1921 to 2009 provides new evidence for the empirical relevance of the standard storage model our results imply a cutoff price at which discretionary stocks go to zero which is higher than the price obtained by applying the pseudo maximum likelihood estimator to the same data the implied frequency of stockouts is lower and price correlations skewness and kurtosis implied by the model closely match those seen in the annual sugar price data we find the price of sugar to be highly responsive to small changes in consumption when inventories are not available to buffer the effects of negative supply shocks on consumption prices must increase sharply to induce the consumption changes needed to clear the market our results show why production shocks are not necessarily aligned with price spikes the same production shock can give rise to very different price responses depending on whether or not there are sufficient stocks to buffer its impact

testing the prebisch singer hypothesis since 1650 evidence from panel techniques that allow for multiple breaks abstract in this paper we re examine two important aspects of the dynamics of relative primary commodity prices namely the secular trend and the short run volatility to do so we employ 25 series some of them starting as far back as 1650 and powerful panel data stationarity tests that allow for endogenous multiple structural breaks results show that all the series are stationary after allowing for endogenous multiple breaks test results on the prebisch singer hypothesis which states that relative commodity prices follow a downward secular trend are mixed but with a majority of series showing negative trends we also make a first attempt at identifying the potential drivers of the structural breaks we end by investigating the dynamics of the volatility of the 25 relative primary commodity prices also allowing for endogenous multiple breaks we describe the often time varying volatility in commodity prices and show that it has increased in recent years

failing forward the euro crisis and the incomplete nature of european integration the european union eu project of combining a single market with a common currency was incomplete from its inception this article shows that the incompleteness of the governance architecture of e

demand effects and speculation in oil markets theory and evidence abstract we present evidence showing the existence of stable cointegrating vectors connecting four important variables in the u s and global oil markets oil production stocks of crude oil the real price of oil and broad measures of income our data are monthly and go back to the 1930s split into sub samples which correspond to periods before and after the 1973 crisis we further show that the cointegrating vectors found in the data accord well with an extended commodity storage model which allows for demand growth dynamics and for supply regimes specifically inventories and price move in opposite directions when supply is flexible but the relationship reverses so that they comove when supply is inflexible

differences in citation patterns across journal tiers the case of economics we study how citation patterns differ between journal tiers in economics concretely we analyze citations patterns of more than 6 000 economics research articles published in top five second tier and top field economics journals between 1992 and 1996 in line with previous literature we find that top five journals articles generally receive more citations and that the life cycles of those citations are longer however their influence in term of citations is overestimated in its first twenty five years since publication the median top five article accumulates 4 25 around 3 as many citations when compared to the second tier and top field median article we show that this ratio is strongly associated with the field of economics research e g this ratio is the lowest for econometric methods papers and with articles impact e g in all fields of economics research except for theory this ratio decreases sharply as one moves toward high impact articles in term of citations

economic liberalization via imf structural adjustment sowing the seeds of civil war previous studies that have explored the effects of economic liberalization on civil war have employed aggregate measures of openness and have failed to account for potential endogeneity bias in this research note we suggest two improvements to the study of the relationship between liberalization and civil war first emphasizing that it is processes that systematically create new economic winners and losers rather than particular levels of economic openness that have the potential to generate conflict we consider the effects of one oft used means of liberalizing economies the adoption by countries of international monetary fund imf structural adjustment programs second we use a bivariate probit model to address issues of endogeneity bias analyzing all data available for the period between 1970 and 1999 we identify an association between the adoption of imf programs and the onset of civil war this finding suggests that imf programs to promote economic openness unintentionally may be creating an environment conducive to domestic conflict

political regime change and the real interest rate the effect of changes in policy regimes on real interest rates has important implications for financial and economic theory there is little current evidence that policy regime changes have any impact on the level of real interest rates we use large political changes as our measure of policy regime changes changes in presidential administration are more significantly correlated with real rate changes than are changes in the federal reserve chair or the mean shift points identified by garcia and perron 1996 using time series methods we also show that change of party control of congress is a significant factor explaining real rates we argue that theoretical models built on the assumptions of constant or policy invariant real interest rates are at variance with the empirical evidence

an analysis of publication lags in econometrics this note describes the lengthening in publication lags for econometric papers in seven journals since 1986 and briefly considers ways of shortening them

the slowdown of the economics publishing process over the last three decades there has been a dramatic slowdown of the publication process at top economics journals a substantial part is due to journals requiring more extensive revisions various explanations are considered democratization of the review process increases in the complexity of papers growth of the profession and cost and benefit arguments changes in the profession are examined using time series data connections between these changes and the slowdown are examined using paper level data there is evidence for some explanations but most of the slowdown remains unexplained changes may reflect evolving social norms

estimating the competitive storage model with trending commodity prices we present a method to estimate jointly the parameters of a standard commodity storage model and the parameters characterizing the trend in commodity prices this procedure allows the influence of a possible trend to be removed without restricting the model specification and allows model and trend selection based on statistical criteria the trend is modeled deterministically using linear or cubic spline functions of time the results show that storage models with trend are always preferred to models without trend they yield more plausible estimates of the structural parameters with storage costs and demand elasticities that are more consistent with the literature they imply occasional stockouts whereas without trend the estimated models predict no stockouts over the sample period for most commodities moreover accounting for a trend in the estimation imply price moments closer to those observed in commodity prices our results support the empirical relevance of the speculative storage model and show that storage model estimations should not neglect the possibility of long run price trends

why are gender quota laws adopted by men the role of inter and intraparty competition in nearly every case of quota law adoption the support of party elites is critical but this raises a puzzle what can motivate predominantly male elites to put these policies in place this artic

the eurotower strikes back crises adjustments and europe s austerity protests the 2008 global financial crisis came with fears and for some hopes that a new wave of public mobilization would emerge in industrialized countries especially throughout the european union eu the epicenter of the crisis large protests were expected yet the energy with which social groups mobilized against the proposed austerity measures quickly fizzled this article provides new evidence for why this was the case in line with neo keynesian theory we argue that the interest rate adjustments and political announcements of the european central bank ecb limited the potential for mass unrest in the member states of the economic and monetary union emu affected by the crisis we provide evidence for our argument with yearly panel data and a new original data set of monthly political protests between 2001 and 2013 our analyses support the hypothesis that the ecb was able to successfully assuage dissatisfaction with the limited reform options of the eurozone member states in the wake of the eurocrisis

taking time seriously dramatic world change has stimulated interest in research questions about the dynamics of politics we have seen increases in the number of time series data sets and the length of typical time series but three shortcomings are prevalent in published time series analysis first analysts often estimate models without testing restrictions implied by their specification second researchers link the theoretical concept of equilibrium with cointegration and error correction models third analysts often do a poor job of interpreting results the consequences include weak connections between theory and tests biased estimates and incorrect inferences we outline techniques for estimating linear dynamic regressions with stationary data and weakly exogenous regressors we recommend analysts 1 start with general dynamic models and test restrictions before adopting a particular specification and 2 use the wide array of information available from dynamic specifications we illustrate this strategy with data on congressional approval and tax rates across oecd countries

politics and society political diversity and uniformity in households as a theoretical puzzle the authors resolve a theoretical puzzle that characterizes the political preferences of members of social groups by a demonstrating that political homogeneity is a variable to be explained b

the inside scoop acceptance and rejection at the journal of international economics abstract there is little work on the inner workings of journals what factors seem to affect the ability to publish in a journal could simple rules which are already used by some journals like the desk rejection of a significant minority of papers help to streamline the process at what cost how well do journals seem to do in choosing papers what can we say about the extent of type 1 and type 2 errors do editors seem to have uniform standards or are some harsher than others we use data on submissions to the journal of international economics to help answer these questions

crisis politics in europe why austerity is easier to implement in some countries than in others when countries face balance of payments crises their policy responses vary widely this article argues that the choice between the two main options of internal adjustment i e austerity and stru

primary commodity prices manufactured goods prices and the terms of trade of developing countries what the long run shows the authors revisit in this article the empirical foundation of the alleged secular decline in the prices of primary commodities relative to those of manufactures they use a newly constructed index of commodity prices and two modified indexes of manufactured good prices and find that from 1900 to 1986 the relative prices of all primary commodities fell on trend by 0 5 percent a year and those of nonfuel primary commodities by 0 6 percent a year they thus confirm the sign but not the magnitude of the trend implicit in the work of prebisch but even the more limited secular decline shown by their relative price indexes may be magnified by an incomplete account of quality improvements in manufactures they then show that the evolution of terms of trade of nonfuel primary commodities is not the same as that of the net barter terms of trade of non oil exporting developing countries finally they find that despite the decline that has probably occurred during the current century in the terms of trade of nonfuel primary commodities the purchasing power of total exports of these products has increased considerably similarly the fall that may have occurred after world war ii in the net barter terms of trade of developing countries seems to have been more than compensated for by the steady improvement in their income terms of trade

competitive storage and commodity price dynamics by buying cheap and selling dear risk neutral commodity speculators can smooth commodity prices and induce serial dependence in price even when none would exist under a simple process of supply and demand commodity prices are variable and strongly positively correlated from one year to the next the variability is often explained by supply factors and the autocorrelation by the activities of speculators we show that this explanation is not consistent with the evidence speculation can substantially increase autocorrelation for prices that are weakly autocorrelated in its absence but not to the high levels that are observed in the data

a short note on updating the grilli and yang commodity price index the grilli and yang commodity price index is one of the most widely used commodity price series in the applied economics literature this note provides some practical advice on updating this data series by listing the base period index values identifying relevant data sources and describing a method for computing subindex weights in 1988 enzo grilli and maw cheng yang published their seminal article on the long run development of an index of 24 primary commodity prices gycpi deflated by an index of manufactured goods unit values the sample of average annual primary commodity prices covers about 54 percent of the primary commodity trade in the index reference period 1977 79 the deflators considered for manufacturing prices were the u s manufacturing price index usmpi and the manufacturing unit value index muv 1widely used and discussed the grilli and yang data set has been extended by a number of researchers the data have been employed in a variety of contexts in later studies thus the gycpi data continue to enjoy wide popularity in their own right and as a benchmark for new approaches to empirical studies

exogenous shocks foreign aid and civil war the recent civil war literature suggests that negative economic shocks in low income countries increase the risk of civil war foreign aid can be an effective conflict prevention tool in times of severe economic conditions aid cushions government spending from the downward pressures of economic shocks providing recipient governments with resources they can use to make rebellion a less attractive option for aggrieved domestic groups using official development assistance oda data covering 1990 through 2004 we find that foreign aid appears to be a useful tool for preventing civil wars in the wake of negative economic shocks and as such aid should be assessed by donors with these conflict suppressing aspects in mind

when grilli and yang meet prebisch and singer piecewise linear trends in primary commodity prices abstract in this study we test the prebisch singer hypothesis on the secular decline of relative primary commodity prices with the extended grilli and yang 1988 data set ending at 2010 rather than asking whether it holds for the whole sample period we examine if the hypothesis holds sometimes during the sample period by estimating the piecewise linear trends of primary commodity prices we employ the new l1 trend filtering proposed by kim et al 2009 to estimate the piecewise linear trends we find that the prebisch singer hypothesis holds sometimes but not always for many of the primary commodities in the grilli yang data the strength of the prebisch singer hypothesis has become substantially weaker recently as the relative prices of many primary commodities have increased sharply since around 2000

democracy and markets the case of exchange rates the relationships between the workings of democratic institutions and currency markets are studied severa competing propositions about how political re equilibration affects currency markets are derived and tested the results support the view that democratic politics affects currency markets expectations and uncertainty about electoral outcomes and government survival affect the probability of switching between currency market equilibria additionally opinion polls about chief executive performance have a direct effect on the probabilities of switches between currency regimes suggesting that these polls cause currency traders to revise their expectations about the stability of governments and or the contents of public policies electoral institutions mitigate the impact of politics on currency market equilibria political effects are weaker in countries with proportional representation electoral systems than in countries with majority plurality systems there is less evidence that central bank independence consensual corporatist systems or political coherency reduces the effect of politics on currency markets he study of democracy and markets is at the heart of political economy understanding how political equilibration and economic equilibration are related is one of the main challenges facing this field the size and nature of currency markets make them especially important cases substantively with globalization currency markets have become important constraints on elected governments reducing their room to maneuver analytically in comparison to most goods markets currency markets are informationally efficient asset markets with distinctive equilibria today s exchange rate is determined by currency traders fully informed expectations about tomorrow s exchange rate the sensitivity of these markets to the arrival of new information therefore makes them particularly well suited for studying the effects of political news and uncertainty on economic equilibration 1 this article demonstrates there are informationally relevant political factors insofar as exchange rate determination is concerned factors that directly affect the transition probabilities between currency market equilibria moreover these factors vary in important ways across democracies some electoral institutions lessen the effects of politics on currency

identifying supply and demand elasticities of agricultural commodities implications for the us ethanol mandate we present a new framework to identify supply elasticities of storable commodities where past shocks are used as exogenous price shifters in the agricultural context past yield shocks change inventory levels and futures prices of agricultural commodities we use our estimated elasticities to evaluate the impact of the 2009 renewable fuel standard on commodity prices quantities and food consumers surplus for the four basic staples corn rice soybeans and wheat prices increase 20 per cent if one third of commodities used to produce ethanol are recycled as feedstock with a positively skewed 95 percent confidence interval that ranges from 14 to 35 per cent jel q11 q16 q42 q48

variable long term trends in mineral prices the ongoing tug of war between exploration depletion and technological change abstract this paper explores the use of low frequency band pass filters for describing long run trends in real mineral commodity prices this approach has the advantage of allowing long run trend rates to evolve gradually over time rather than assuming that they are constant perhaps with occasional structural breaks over time this is a flexible way of capturing the ongoing tug of war between exploration depletion and technological change over 100 mineral and commodities stretching back to the late 19th or early 20th century are considered the variety of lr trends is astonishing but very few increase monotonically contrary to the prediction of the basic hotelling model some decline monotonically as predicted by prebisch and singer some have the u shaped pattern predicted by pindyck 1978 heal 1981 and slade 1982 others have changed direction up to three times in the period since 1900 the tug of war continues with exhaustion nowhere in sight

the role of underground storage in the dynamics of the us natural gas market a threshold model analysis abstract natural gas is an important source of energy in the global economy hence understanding the drivers of its prices is of significant interest for the many economic agents this paper investigates the role of inventories for the dynamics of the u s natural gas market our contribution is twofold first within the threshold structural var framework we demonstrate that in a low inventory regime spot prices are more responsive to economic fundamentals in comparison to situation in which the inventories are high second we present evidence that the level of natural gas inventories have a significant effect on the relationship between spot and futures prices

competing commitments technocracy and democracy in the design of monetary institutions in this article i refine and expand the agenda for research on monetary institutions first i evaluate the analyses and research designs presented in this special issue of international organization out of this evaluation several ideas about how to produce a third generation of research on this topic emerge specific ideas include how to create a better synthesis with certain branches of economics such as information economics broaden the welfare criteria on which institutional choices are made deepen the analyses of coalitional and other political processes on which the choice of institutions are based and strengthen the tests that are offered in support of these choices in the second part of this article i explore questions of how popular sovereignty over economic policy and institutional choice are achieved i show that the institutional regimes proposed in the special issue are in a sense democratic as long as the public s perceived consensus about economic policies and macroeconomic outcomes is real however if as new work suggests there is genuine dissensus about policy and macroeconomic objectives it is no longer clear that the regimes proposed in the special issue are democratic in the conclusion i briefly discuss a possible crisis of imagination in institutional design