forward looking information in var models and the price puzzle abstract with a view to addressing the major disadvantage of the var model namely the inadequate description of the central bank reaction function we propose a var specification that proves successful in solving the price puzzle featuring in monetary vars for the us this specification consists in augmenting a standard var with two forward looking variables the federal funds futures rate or alternatively a money market forward rate reflecting monetary policy expectations and a composite leading indicator of economic activity these two variables appear to effectively control for the information set that the federal reserve may use in monetary policy decision making with this modification theory consistent responses to monetary policy shocks are obtained

targeted saving by renters for housing purchase in japan abstract this paper examines the extent to which wealth accumulation for housing purchase increases household savings and suppresses consumption the study employs an estimation method based on simultaneous equations with limited dependent variables developed by nelson and olson to examine the relationship between wealth accumulation and housing purchase plans using data relating to young japanese renters the estimation results provide evidence that young japanese households severely reduce their consumption by around 30 40 percent

learning by doing the technology gap and growth in contrast with other trade and growth theories in previous literature the author resents a growth theory of trade induced learning other things being equal two conditions are essential for trade induced learning first both exports and imports are equally important sources and are mutually reinforced in intensifying the learning process moreover the nature or characteristics of these traded goods also influence the effect of learning second trade openness is a prerequisite but not a sufficient condition for rapid growth with whom one trades one s trading partner is a key factor in determining trade induced technology spillover and hence in affecting enduring growth therefore this trade induced learning theory provides abundant and testable implications for the empirical study of trade and growth copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

is the export led growth hypothesis valid for canada empirical evidence linking exports to economic growth has been mixed and inconclusive this study re examines the export led growth elg hypothesis for canada by testing for granger causality from exports to national output growth using vector error correction models vecm and the augmented vector autoregressive var methodology developed in toda and yamamoto 1995 application of recent developments in time series modelling and the inclusion of relevant variables omitted in previous studies help to clarify the contradictory results from prior studies on the canadian economy the empirical results suggest that a long run steady state exists among the model s six variables and that granger causal flow is unidirectional from real exports to real gdp jel classification f43 c32 est ce que l hypothese de la croissance engendree par les exportations est valide pour le canada les resultats empiriques des etudes tentant de montrer le lien entre les exportations et la croissance economique sont mixtes et ne contiennent pas de resultats concluants cet article re examine l hypothese dans le cas du canada en testant la causalitea la granger pour les exportations et la croissance du produit national en utilisant les modeles vecm et la methodologie var developpes par toda et yamamoto 1995 l application de certains developpements recents dans l analyse des series chronologiques et l inclusion de variables pertinentes omises dans les etudes anterieures aident a mettre de l ordre dans les resultats contradictoires des etudes anterieures portant sur l economie canadienne les resultats empiriques suggerent qu un regime permanent existe entre les six variables du modele et que la causalitea la granger est unidirectionnelle des exportations reelles vers le pib reel

on the export led growth hypothesis the econometric evidence from china the export led growth hypothesis is tested by estimating an augmented growth equation on the basis of times series data from china the granger no causality procedure developed by toda and yamamoto journal of econometrics 66 1995 was applied to test the causality link between exports and economic growth in a var system three distinct features in this paper stand out compared to earlier studies on china first we have gone beyond the traditional two variable relationship by building a var model in the production function context to avoid a possible specification bias second we follow riezman whiteman and summers empirical economics 21 1996 to test the export led growth hypothesis while controlling for the growth of imports to avoid producing a spurious causality result third we test the sensitivity of causality test results under different lag structures along with the choice of optimal lags in particular the methodology developed by toda and yamamoto 1995 is expected to improve the stan

informational implications of interest rate rules this paper compares interest rate and money supply rules the analysisis conducted within a rational expectations macro model that incorporates flexible prices and informational frictions with differential information interest rate targets can affect the information content of market prices and real activity but these realconsequences can always be replicated by an appropriately chosen moneystock rule with feedback to economic activity however when the policyauthority lacks information about the state of the economic system itfaces a discrete choice between an interest rate peg and strict moneystock control copyright 1986 by american economic association

export led growth and structural change evidence from malaysia many studies have tried to establish the causal link between export expansion and economic growth this contribution is to recognize that structural changes will change the sources of growth and this will affect the export growth relationship a country case study approach is used focusing on malaysia a country with one of the world s highest sustained growth rates and a long history of commodity trade we use var analysis of malaysian quarterly trade and gdp growth from 1965 to 1996 trade data are disaggregated into primary and manufactures exports and causality tests are applied to the entire period as well as two subperiods 150 the 1965 1501980 period when policy emphasis was on import substitution and the 1981 1501996 period when policies favoured export led growth statistical tests confirm export led growth for the full period and for the period to 1980 but tests on the 1981 1501996 period show growth causing exports primary exports had a stronger direct impact on economic growth than manufactu

the strategic bequest motive although recent research suggests that intergenerational transfers play an important role in aggregate capital accumulation our understanding of bequest motives remains incomplete we develop a simple model of strategic bequests in which a testator influences the decisions of his beneficiaries by holding wealth in bequeathable forms and by conditioning the division of bequests on the beneficiaries actions the model generates falsifiable empirical predictions that are inconsistent with other theories of intergenerational transfers we present econometric and other evidence that strongly suggests that bequests are often used as compensation for services rendered by beneficiaries

capital market imperfections and the consumption function a model is presented in which there is asymmetric information between borrowers and lenders two questions are asked i would liquidity constraints in such a model take the form of credit rationing or of a wedge between borrowing and lending rates and ii how do these constraints affect the aggregate consumption function some empirical

interpreting the macroeconomic time series facts the effects of monetary policy existing theory and evidence on the effects of monetary policy are reviewed substantial room for disagreement among economists remains new evidence based on multivariate time series studies of several countries is presented while certain patterns in the data consistent with effective monetary policy are strikingly similar across countries others particularly the tendency of interest rate increases to predict high inflation are harder to reconcile with effective monetary policy

imperfect information multiple shocks and policy s signaling role abstract in multiple shock models when agents have imperfect information they attempt to infer a shock s type in addition to its size in this environment monetary policy plays an important signaling role this paper highlights this signaling role by showing that conclusions from imperfect information monetary models are sensitive to the number of shocks included with multiple shocks contractionary monetary policy can initially increase inflation and delay the eventual disinflation moreover multiple shocks can result in destabilizing price flexibility while optimal policy s response to one shock will depend on the existence of other shocks contrary to a typical linear quadratic framework

menu costs and phillips curves this paper develops a model of a monetary economy in which individual firms are subject to idiosyncratic productivity shocks as well as general inflation sellers can change price only by incurring a real menu cost we calibrate this cost and the variance and autocorrelation of the idiosyncratic shock using a new u s data set of individual prices due to klenow and kryvtsov the prediction of the calibrated model for the effects of high inflation on the frequency of price changes accords well with international evidence from various studies the model is also used to conduct numerical experiments on the economy s response to various shocks in none of the simulations we conducted did monetary shocks induce large or persistent real responses

professionals play minimax the implications of the minimax theorem are tested using natural data the tests use a unique data set from penalty kicks in professional soccer games in this natural setting experts play a one shot two person zero sum game the results of the tests are remarkably consistent with equilibrium play in every respect i winning probabilities are statistically identical across strategies for players ii players choices are serially independent the tests have substantial power to distinguish equilibrium play from disequilibrium alternatives these results represent the first time that both implications of von neumann s minimax theorem are supported under natural conditions during the last few decades game theory has contributed to a reshaping of important aspects of the methodology of economics and other social sciences in a large part this is because the language concepts and techniques of non cooperative game theory have become central to many areas of the discipline undoubtedly studying the interaction of ideally rational players greatly aids our understanding of the behaviour of real individuals firms and other agents moreover as kreps 1991 remarks studying the former should aim at understanding the latter the point of game theory is to help economists understand and predict what will happen in economic social and political contexts theoretical contributions should thus feed back to empirical analysis however testing the implications of the theory has proven extremely difficult in the literature the primary reason is that many predictions often hinge on properties of the utility functions and the values of the rewards used even when predictions are invariant over classes of preferences data on rewards are seldom available in natural settings moreover there is often great difficulty in determining strategy sets and in measuring individuals choices effort levels and the incentive structures they face as a result even the most fundamental predictions of game theoretical models have not yet been supported empirically in real situations in view of the substantial problems associated with testing theoretical predictions using natural data many authors have been compelled to test them in experimental settings interestingly enough despite the controlled structure of experiments the results of many experiments during the last few decades typically reject the assumption that subjects are playing according to the theoretical implications of equilibrium play for instance a number of experiments have evaluated the empirical validity of von neumann s minimax theory for two person zero sum games a theory that occupies a central position in our understanding of strategic situations the results have been mixed and are often rather negative see for instance brown and rosenthal 1990 rapoport and boebel 1992 camerer 2003 and the references therein

implications of rational inattention abstract a constraint that actions can depend on observations only through a communication channel with finite shannon capacity is shown to be able to play a role very similar to that of a signal extraction problem or an adjustment cost in standard control problems the resulting theory looks enough like familiar dynamic rational expectations theories to suggest that it might be useful and practical while the implications for policy are different enough to be interesting

causal analyses between exports and economic growth in developing countries this study investigates the prima facie causal relationship between the exports and output growth in 30 developing countries over the period from 1960 to 1988 in a multivariate framework the information set considered for the output and exports models are domestic output exports labour and capital and exports domestic output exchange rate and foreign output respectively this study indentities a feedback prima facie causal relationship between exports and output growth in five countries export growth prima facie causes output growth in another six countries output growth prima facie causes export growth in a further eight countries and no causal relationship was observed between export growth and output growth in the remaining 11 countries we also found that in 15 countries the foreign exchange rate prima facie caused export growth and that in 12 countries world output caused export growth

is the export led growth hypothesis valid for australia the relationship between exports and output is examined using australian annual data over the period 1900 1993 cointegration and causality testing fails to detect the existence of a long run or short run relationship between the two variables these results are explained by restoring to the structural time series modelling approach which shows that while the output series exhibits cyclical variation the exports series does not have this property it is concluded that the export led growth hypothesis is not valid for australia

racial integration as an innovation empirical evidence from sports leagues this paper treats racial integration as an innovation in economic process in which economic entities find it advantageous to utilize potentially more productive inputs previously unavailable due to law custom or managerial discretion data on the racial integration of major league baseball and atlantic coast conference basketball are employed to address this issue the central question examined is which type of team integrated first losers or winners the results strongly support the idea that entrepreneurship trumps competitive rivalry that is winning teams led the process of racial integration jel li j7 one of the watershed events in u s history is the struggle to achieve a racially integrated society while the civil rights laws and court rulings in the 195o s 196o s and 197o s are among the major changes in public policy that gradually led to a breakdown of jim crow rule in the american south other changes in law and custom also motivated the process of racial integration across time and place indeed segregation was not limited to the south but was a prominent feature of many national organizations and markets despite the extensive commentary on these events from various perspectives there has been very little economic analysis of the actual process of racial integration economists have focused their efforts on the economics of discriminatio n while the actual process by which individuals firms and

the role of intergenerational transfers and life cycle saving in the accumulation of wealth he purpose of this paper is to review what economists know at present about the following question how large a portion of the existing wealth is the result of a bequest motive that is of accumulation for the specific purpose of leaving bequests i will also endeavor to clarify why an answer to this question is of interest in the early keynesian period when the study of national saving first attracted wide interest relatively little attention was paid to what led people to save though it was generally understood that the main systematic reason was to leave bequests j m keynes in the famous chapter 9 of the general theory of employment interest and money 1936 had listed seven distinct motives for saving besides the leaving of bequests but five of these which include to increase one s future income or to insure one s independence and power implied that all or nearly all the accumulation would finally wind up as bequeathed wealth this in turn meant that most private wealth originated through bequests that is it either had been received through bequests or was destined to be bequeathed and indeed how else could society accumulate wealth however keynes 1936 p 107 also mentioned two further motives precaution that is to build up a reserve against unforeseen contingencies and foresight that is to provide for an anticipated future relation between the income and the needs of the individual or his family different from that which exists in the present as for example in relation to old age family education or the maintenance of dependents these motives in contrast to most of the previous ones have the

the validity of the elg hypothesis in the mena region cointegration and error correction model analysis the export led growth elg hypothesis is examined for nine middle east and north africa mena countries in three variable vector autoregressive and error correction models when considering total exports the results reject the elg hypothesis in almost all of these countries when only manufactured exports are examined no support is found for elg in countries with relatively low shares of manufactured exports in total merchandise exports but strong support in countries with relatively high shares these findings suggest that promoting exports may contribute to economic growth only after a certain threshold of manufactured exports has been reached

business cycles indicators and forecasting acknowledgments introduction james h stock and mark w watson 1 twenty two years of the nber asa quarterly economic outlook surveys aspects and comparisons of forecasting performance victor zarnowitz and phillip braun comment allen sinai 2 a procedure for predicting recessions with leading indicators econometric issues and recent experience james h stock and mark w watson comment kenneth f wallis 3 estimating event probabilities from macroeconometric models using stochastic simulation ray c fair comment james d hamilton 4 a nine variable probabilistic macroeconomic forecasting model christopher a sims comment pierre perron 5 why does the paper bill spread predict real economic activity benjamin m friedman and kenneth n kuttner comment ben s bernanke 6 further evidence on business cycle duration dependence francis x diebold glenn d rudebusch and daniel e sichel comment bruce e hansen 7 dynamic index models for large cross sections danny quah and thomas j sargent comment john geweke 8 modelling non linearity over the business cycle clive w j granger timo terdsvirta and heather anderson comment andrew harvey contributors author index subject index

the effect of liquidity constraints on consumption a cross sectional analysis this paper examines the effect of liquidity constraints on consumption expenditures using a single year cross section data set a reduced form equation for consumption is estimated on high saving households by the tobit procedure to account for the selectivity bias since high saving households are not likely to be liquidity constrained the estimated equation is an appropriate description of how desired consumption that would be forthcoming without liquidity constraints is related to the variables available in the cross section data when the reduced form equation is used to predict desired consumption the gap between desired consumption and measured consumption is most evident for young households

optimal monetary policy with imperfect common knowledge we study optimal nominal demand policy in a flexible price economy with monopolistic competition where firms have imperfect common knowledge about the shocks hitting the economy information imperfections emerge endogenously because firms are assumed to have finite shannon capacity to process information we then ask how policy that minimizes a quadratic objective in output and prices depends on firms processing capacity when price setting decisions of firms are strategic complements we find that policy should nominally accommodate white noise mark up shocks for a large range of capacity values this fi nding is robust to the policy maker observing shocks imperfectly or being uncertain about firms processing capacity when mark up shocks are persistent accommodation may even have to increase in the medium term but has to decrease in the long run thereby generating a hump shaped price response and a slow reduction in output instead when prices are strategic substitutes policy tends to react with nominal demand contractions to mark up shocks in addition there might exist discontinuities between common knowledge equilibria and equilibria with small amounts of imperfect common knowledge

five facts about prices a reevaluation of menu cost models are price decreases 3 the frequency of price increases covaries strongly with inflation whereas the frequency of price decreases and the size of price increases and price decreases do not 4 the frequency of price change is highly seasonal it is highest in the first quarter and then declines 5 we find no evidence of upwardsloping hazard functions of price changes for individual products we show that the first second and third facts are consistent with a benchmark menu cost model whereas the fourth and fifth facts are not

high frequency identification of monetary non neutrality the information effect we present estimates of monetary non neutrality based on evidence from high frequency responses of real interest rates expected inflation and expected output growth our identifying assumption is that unexpected changes in interest rates in a 30 minute window surrounding scheduled federal reserve announcements arise from news about monetary policy in response to an interest rate hike nominal and real interest rates increase roughly one for one several years out into the term structure while the response of expected inflation is small at the same time forecasts about output growth also increase the opposite of what standard models imply about a monetary tightening to explain these facts we build a model in which fed announcements affect beliefs not only about monetary policy but also about other economic fundamentals our model implies that these information effects play an important role in the overall causal effect of monetary policy shocks on output

permanent income liquidity and expenditure on automobiles evidence from panel data several recent papers have tested the permanent income cum rational expectations hypothesis using data on nondurable or semidurable consumption we show how this approach can be extended to the case of durables an application to panel data on automobile expenditures reveals no evidence against the permanent income hypothesis this result is unchanged in subsamples segregated by family holdings of liquid assets

the role of intergenerational transfers in aggregate capital accumulation this paper uses historical u s data to directly estimate the contribution of intergenerational transfers to aggregate capital accumulation the evidence presented indicates that intergenerational transfers account for the vast majority of aggregate u s capital formation only a negligible fraction of actual capital accumulation can be traced to life cycle or hump savings a major difference between this study and previous investigations of this issue is the use of more accurate longitudinal age earnings and age consumption profiles these profiles are simply too flat to generate substantial life cycle savings this paper suggests the importance of and need for substantially greater research and data collection on intergenerational transfers life cycle models of savings that emphasize savings for retirement as the dominant form of capital accumulation should give way to models that illuminate the determinants of intergenerational transfers

an alternative explanation of the price puzzle abstract this paper proposes an explanation for the frequent appearance of a price puzzle in vars designed for monetary policy analysis it assumes that the data are generated by a model in which output and output gap are not equivalent while an econometrician follows the common practice of including only output in the var the omission of the output gap is shown to spuriously produce a price puzzle and several other incorrect conclusions in a class of commonly used models this can happen even if the model admits a triangular identification and if the forecasts produced by the misspecified var are optimal when the model is tested on us data all predictions are supported a commodity price index is not needed to solve the puzzle

the price puzzle reconsidered abstract a large literature has employed structural vector autoregressive svar models to investigate the empirical effects of u s monetary policy many of these models regularly produce a price puzzle a rise in the aggregate price level in response to a contractionary innovation to monetary policy unless commodity prices are included conventional wisdom maintains that commodity prices resolve the price puzzle because they contain information that helps the federal reserve forecast inflation i examine a number of plausible alternative indicator variables and find little correlation between an ability to forecast inflation and an ability to resolve the price puzzle additionally a sub sample investigation reveals that evidence of a price puzzle is associated primarily with the 1959 1979 sample period and that most indicators including commodity prices cannot resolve the puzzle over this period

exports export composition and growth cointegration and causality evidence for malaysia this paper comprehensively tests the export led growth elg hypothesis for malaysia for the period 1955 90 using cointegration and causality testing based on hsiao s synthesis of the granger test and akaike s minimum final prediction error criterion the results provide support for the elg hypothesis aggregate exports granger cause real gdp and non export gdp this relationship is found to be driven by manufactured exports rather than by traditional exports

the sensitivity of consumption to transitory income estimates from panel data on households we investigate the stochastic relation between income and consumption specifically consumption of food within a panel of about 2 000 households our major findings are 1 consumption responds much more strongly to permanent than to transitory movements of income 2 the response to transitory income is nonetheless clearly positive 3 a simple test independent of our model of consumption rejects a central implication of the pure life cycle permanent income hypothesis the observed covariation of income and consumption is compatible with pure life cycle permanent income behavior on the part of80 percent of families and simple proportionality of consumption and income among the remaining 20 percent as a general matter our findings support the view that families respond differently to different sources of income variations in particular temporary income tax policies have smaller effects on consumption than do other more permanent changes in income of the same magnitude this abstract was borrowed from another version of this item

signaling in a global game coordination and policy traps this paper introduces signaling in a global game so as to examine the informational role of policy in coordination environments such as currency crises and bank runs while exogenous asymmetric information has been shown to select a unique equilibrium we show that the endogenous information generated by policy interventions leads to multiple equilibria the policy maker is thus trapped into a position in which self fulfilling expectations dictate not only the coordination outcome but also the optimal policy this result does not rely on the freedom to choose out of equilibrium beliefs nor on the policy being a public signal it may obtain even if the policy is observed with idiosyncratic noise

exports and economic growth in industrialized countries the prima facie causal relationships between growth exports and factor inputs capital and labour are investigated in five industrialized countries germany itlay japan united kingdom and united states over the period 1960 87 by analysing a four variable vector autoregressive var model for each country our results indicate that germany and japan experienced export led growth reverse causality between exports and growth is found in the case of the us and uk while to causal relationship between exports and output is found for itlay

a new look at the effects of export instability on investment and growth abstract this paper is concerned with the effects of export instability on investment and growth it is shown that past cross sectional empirical studies on the effects of export instability either in prices or in value terms used an incorrect measure of instability that does not properly take account of the share of exports in gdp using a new instability index and a broad set of conditioning variables it is shown that export instability was positively associated with investment but negatively associated with growth in a large sample of countries during the period from the early 1970s to the mid 1980s

policy driven productivity in chile and mexico in the 1980 s and 1990 s abstract both chile and mexico experienced severe economic crises in the early 1980s but chilerecovered much faster than did mexico using growth accounting and a calibrated dynamicgeneral equilibrium model we conclude that the crucial determinant of this difference betweenthe two countries was the faster productivity growth in chile rather than higher investment oremployment our hypothesis is that this difference in productivity was driven by ealier policyreforms in chile the most crucial of which were in banking and bankruptcy procedures wepropose a theoretical framework in which government policy affects both the allocation ofresources and the composition of firms journal of economic literature classification codes e52 n6 o40 key words chile mexico growth accounting total factor productivity depression centro de economia aplicada universidad de chile santiago chile research department federal reserve bank of minneapolis minneapolis mn 55480 department of economics university of minnesota and national bureau of economic research department ofeconomics university of minnesota minneapolis mn 55455 and research department federal reserve bank of minneapolis and instituto de economia pontificia universidadcatolica de chile santiago chile respectively we thank the participants in the minneapolisfed s great depressions of the twentieth century project especially ed prescott for usefuldiscussions jim macgee provided invaluable research assistance bergoeing thanks the hewlettfoundation and kehoe and kehoe thank the national science foundation for research support the views expressed herein are those of the authors and not necessarily those of the federalreserve bank of minneapolis or the federal reserve system

the signaling role of policy actions abstract in an economy affected by shocks that are imperfectly known the monetary instrument takes on a dual stabilizing role as a policy response that directly influences the economy and as a vehicle for information that reveals the central bank s assessment to firms because mark up shocks cannot be neutralized by monetary policy providing firms with more information about these shocks exacerbates their reaction and creates a larger distortion recognizing the signaling role of its instrument the central bank distorts its policy response in order to optimally shape firms beliefs while providing firms with more information is always detrimental to the output gap it has a more subtle effect on price dispersion depending on whether information is provided through the transparency channel or through the signaling channel although more transparency is always detrimental to welfare the information that is conveyed by the monetary instrument improves welfare when firms coordination is highly valuable

a theory of demand shocks this paper presents a model of business cycles driven by shocks to consumer expectations regarding aggregate productivity agents are hit by heterogeneous productivity shocks they observe their own productivity and a noisy public signal regarding aggregate productivity the public signal gives rise to noise shocks which have the features of aggregate demand shocks they increase output employment and inflation in the short run and have no effects in the long run numerical examples suggest that the model can generate sizable equilibrium dsge models of the business cycle include a large number of shocks to technol ogy monetary policy preferences etc but typically do not include expectational shocks as independent drivers of short run fluctuations 1 this paper explores the idea of expectation driven cycles looking at a model where technology determines equilibrium output in the long run and consumers receive noisy signals about technology in the short run the presence of noisy signals produces expectational errors this paper studies the role of these expectational errors in gener ating volatility at business cycle frequencies the model is based on two ingredients first consumers take time to recognize permanent changes in aggregate fundamentals although they may have good information on the current state of the individual firm or sector where they operate they have only limited information regarding the long run determinants of aggregate activity second consumers have access to public information that is relevant to estimate long run productivity this includes news about technological innovations publicly released macroeconomic and sectoral statistics financial market prices and public statements by policy makers however these signals provide only a noisy forecast of the long run effects of technological innovations this opens the door to noise shocks which induce consumers to temporarily overestimate or underestimate the productive capacity of the economy

manufacturing exports mining exports and growth cointegration and causality analysis for chile 1960 2001 this study examines the export led growth hypothesis using annual time series data from chile in a production function framework it addresses the problem of specification bias under which previous studies have suffered and focuses on the impact of manufactured and mining exports on productivity growth in order to investigate if and how manufactured and mining exports affect economic growth via increases in productivity the study uses johansen cointegration technique the estimation results can be interpreted as evidence of productivity enhancing effects of manufactured exports and of productivity limiting effects of mining exports

dynamic pricing and imperfect common knowledge abstract introducing private information into the dynamic pricing decision of firms by adding an idiosyncratic component to marginal cost can help explain two stylised facts about price changes aggregate inflation responds gradually and with inertia to shocks at the same time as individual price changes can be large the inertial behaviour of inflation is driven by privately informed firms strategically herding on the public information contained in the observations of lagged aggregate variables the model also matches the average duration between price changes found in the data and it nests the standard new keynesian phillips curve as a special case to solve the model the paper derives an algorithm for solving a class of dynamic models with higher order expectations

middle east and north africa countries agricultural export potentials under trade reforms middle east and north africa mena countries future stand in the world s economy depends to a large extent on the potentials of their agriculture to perform in a free trade world european union eu is the largest market for agricultural products of mena countries though new outlets and new partnerships can expand the market of their products enhancing agriculture s potentials safeguards the economy s general expansion and impede the flee of mena countries huge labour reserves to the developed world in this work introducing a few possible trade reforms a general equilibrium model is employed to assess the impacts upon region s export potentials and welfare changes selecting certain distinct scenarios from a wide spectrum of anticipated trade reforms and feeding them into the model insights on the direction of the expected changes and rough estimates of accrued benefits can be extracted the model results suggest that the region might benefit the most under special provisions for developing cou

is increased price flexibility stabilizing this paper uses john taylor s model of overlapping contracts to show that increased wage and price flexibility can easily be destabilizing because of the mundell effect while lower prices increase output the expectation of falling prices decreases output simulations based on realistic parameter values suggest that increases in price flexibility might well increase the cyclical variability of output in the united states copyright 1986 by american economic association

optimal monetary policy when information is market generated endogenous i e market generated signals observed by firms have crucial implications for monetary policy when information is endogenous firms gather a demand signal from their market that is both real and nominal as a result the traditional surprise channel of monetary policy is absent instead monetary policy works through a signaling channel as it affects firms information through the demand signal the optimal policy is then the signaling policy i e the policy that maximizes the information content of the demand signal in our setup the signaling policy targets a positive correlation between money supply and prices which emphasizes the natural response of prices to real shocks on the contrary in the more traditional case of exogenous information optimal monetary policy would stabilize prices as it acts through the surprise channel we show that the signaling policy is optimal regardless of the amount of attention that firms pay to central bank communication

pass or run an empirical test of the matching pennies game using data from the national football league this article examines play calling in the national football league nfl it finds that a mixed strategy equilibrium game explains nfl play calling better than standard optimization techniques when a quarterback is injured and replaced with a less capable backup standard optimization theory suggests that the offense will run more often passing less our game theoretic model predicts that the offense will not change its play calling because the defense will play against the run more often using every first half play from the 11 teams that had a starting quarterback miss action because of injury in the 2006 season we find that the injury did not alter the likelihood that the offense would pass we also find that coaches randomly mix passing and running plays as the mixed strategy games predict

consumption and capital market imperfections an international comparison the excess sensitivity of consumption to current income fluctuations is higher in countries where consumers borrow less low levels of consumer debt can result either from capital market imperfections or from a low demand for loans the evidence suggests that the former view is more appropriate than the latter and thus supports the hypothesis that excess sensitivity may be attributed to liquidity constraints rather than to other factors copyright 1989 by american economic association

optimal monetary policy with uncertain fundamentals and dispersed information this paper studies optimal monetary policy in a model where aggregate fluctuations are driven by the private sector s uncertainty about the economy s fundamentals information on aggregate productivity is dispersed across agents and there are two aggregate shocks a standard productivity shock and a noise shock affecting public beliefs about aggregate productivity neither the central bank nor individual agents can distinguish the two shocks when they are realized despite the lack of superior information monetary policy can affect the economy s relative response to the two shocks as time passes better information on past fundamentals becomes available the central bank can then adopt a backward looking policy rule based on more precise information about past shocks by announcing its response to future information the central bank can influence the expected real interest rate faced by forward looking consumers with different beliefs and thus affect the equilibrium allocation if the announced future response is sufficiently aggressive the central bank can completely eliminate the effect of noise shocks however this policy is typically suboptimal as it leads to an excessively compressed distribution of relative prices the optimal monetary policy balances the benefits of aggregate stabilization with the costs in terms of cross sectional efficiency copyright wiley blackwell

and a hockey game broke out crime and punishment in the nhl i introduction the economic theory of crime predicts that an increase in policing resources will lead to a decrease in the crime rate empirically determining the magnitude of this effect has proved difficult however because of an endogeneity problem although variations in the allocation of policing resources are expected to affect crime rates the reverse may also hold true cornwell and trumbull 1994 levitt 1997 the endogeneity problem can be avoided to a large degree by studying situations in which changes in the allocation of policing resources occur independent from crime rates in an innovative and influential study mccormick and tollison 1984 apply the economic theory of crime to rules infractions in a sports contest they analyze a policy change in the atlantic coast conference acc basketball tournaments in 1979 the acc increased the number of referees in the tournament games mccormick and tollison analyze the effect of increasing the number of referees on the number of fouls called their approach is unlikely to suffer from a severe endogeneity bias because the policy change occurred only once and furthermore occurred between tournament seasons on the other hand insofar as rules infractions in sports contests are analogous to criminal activity mccormick and tollison measure arrests rather than crimes the effect of an increase in policing resources on arrests cannot be resolved by theory for a given crime rate increases in police budgets and forces enable greater monitoring of criminal activity and consequently lead to more arrests the crime rate however is itself a function of the level of policing resources rational criminals realize that greater monitoring increases the probability that their actions will result in arrest and may be deterred from committing crimes this decreases the crime rate the net effect on the total number of arrests is ambiguous because it depends on whether the monitoring or deterrent effect dominates mccormick and tollison find that increasing the number of referees leads to a reduction in the number of fouls called this suggests that the deterrent effect dominates the monitoring effect shortly after their study was published it was recognized in surveys of both sports economics by cairns et al 1985 and crime by cameron 1988 we examine a natural experiment in sports to further understand the monitoring and deterrent effects in the 1999 2000 season the national hockey league nhl games had either one or two referees 1 we find that games with two referees have more penalties called suggesting that the monitoring effect dominates the deterrent effect we then use an instrumental variables technique to determine the effect of the number of referees on the number of infractions actually committed by players in the game we find that the number of referees does not significantly affect the number of infractions committed this is direct evidence that the deterrent effect is inconsequential in this context our results are unlikely to suffer from an endogeneity bias because the variation in the number of referees is independent of the rate of infractions in the individual games ii the nhl experiment enforcement of the rules in an nhl game is done by referees and linesmen the nhl has historically utilized one referee and two linesmen the linesmen are responsible for identifying infractions that result in a stoppage of play such as icing sending the puck from one end of the rink to the other and off sides entering the offensive zone before the puck the referee is responsible for identifying more severe infractions such as slashing swinging a stick at an opponent hooking using a stick to impede the progress of an opponent and fighting fisticuffs when one of these infractions is identified by the referee a penalty is called and the offending player is removed from the ice for a period of time depending on the severity of the penalty

on the north south trade in the americas and its ecological asymmetries there has been a long and intensive debate within the scientific community about the role of international trade in the development of countries during the last decades the focus of attention has moved from the pure economic level to the environmental aspects of international trade establishing a simplified system of north south trade for one reference period 2003 this paper attempts to test empirically the extent of potential asymmetries with regard to extracted material flows and contrasts the results with the economic benefits from trade in terms of value added the south is thereby represented by a selection of latin american countries brazil chile colombia ecuador and mexico the north comprises one of their main commercial partners the united states at the methodological level a multi regional input output analysis is used as the tool of investigation results generally support the hypothesis that the south was feeding the north s societal metabolism south north material exports were 1 6 times larger than north south material exports resulting in a net deficit for the south of 324 million tons moreover material intensity of exported commodities from the south was twice as high as that from the north it is worth highlighting however that part of the north south hypothesis fails for the sample of countries since the larger part of the economic surplus has remained in the south contrarily to what would have been expected

liquidity constraints a cross section analysis of the housing purchase behavior of japanese this paper focuses on the existence of liquidity constraints on housing purchases by japanese households in order to assess the impact of liquidity constraints the author analyzes the housing purchase behavior of worker households which rent and in which the household head was under the age of forty five from the national survey of family income and expenditure compiled by the statistics bureau liquidity constraints emerge as the most important factor in determining housing purchase behavior copyright 1993 by mit press