oil prices inflation and interest rates in a structural cointegrated var model for the g 7 countries sharp increases in the price of oil are generally seen as a major contributor to business cycle asymmetries moreover the very recent highs registered in the world oil market are causing concern about possible slowdowns in the economic performance of the most developed countries in this paper a structural cointegrated var model has been considered for the g 7 countries in order to study the direct effects of oil price shocks on output and prices and the reaction of monetary variables to external shocks our results can be summarized as follows i a stationary money demand as suggested by the classic theory of money can be identified for most countries ii according to the estimated coefficients of the structural part of the model for all countries except japan and u k the null hypothesis of an influence of oil prices on the inflation rate cannot be rejected inflation rate shocks are transmitted to the real economy by increasing interest rates iii impulse response analysis suggests for most countries the existence of an instantaneous temporary effect of oil price innovations on prices iv impulse response functions indicate different monetary policy reactions to inflationary and growth shocks v the simulation exercises directed to estimate the total impact of the 1990 oil price shock indicate that for some countries u s a significant part of the effects of the oil price shock is due to the monetary policy reaction function for other countries canada france and italy however the total impact is offset at least in part by an easing of monetary conditions

unemployment and the democratic electoral advantage this article calls into question the conventional wisdom that incumbent parties are rewarded when unemployment is low and punished when it is high using county level data on unemployment and election returns for 175 midterm gubernatorial elections and 4 presidential elections from 1994 to 2010 the analysis finds that unemployment and the democratic vote for president and governor move together other things being equal higher unemployment increases the vote shares of democratic candidates the effect is greatest when republicans are the incumbent party but democrats benefit from unemployment even when they are in control the explanation for these findings is that unemployment is a partisan issue for voters not a valence issue and that the democratic party owns unemployment when unemployment is high or rising democratic candidates can successfully convince voters that they are the party best able to solve the problem

oil price shocks and real gdp growth empirical evidence for some oecd countries this study assesses empirically the effects of oil price shocks on the real economic activity of the main industrialized countries multivariate var analysis is carried out using both linear and non linear models the latter category includes three approaches employed in the literature namely the asymmetric scaled and net specifications evidence of a non linear impact of oil prices on real gdp is found in particular oil price increases are found to have an impact on gdp growth of a larger magnitude than that of oil price declines with the latter being statistically insignificant in most cases among oil importing countries oil price increases are found to have a negative impact on economic activity in all cases but japan moreover the effect of oil shocks on gdp growth differs between the two oil exporting countries in the sample with the uk being negatively affected by an oil price increase and norway benefiting from it

business cycles in an oil economy abstract the recent oil price fall has created concern among policy makers regarding the consequences of terms of trade shocks for resource rich countries this concern is not a minor one the world s commodity exporters combined are responsible for 15 20 of global value added we develop and estimate a two country new keynesian model in order to quantify the importance of oil price shocks for norway a large prototype petroleum exporter domestic supply chains link mainland non oil norway to the off shore oil industry while fiscal authorities accumulate income in a sovereign wealth fund oil prices and the international business cycle are jointly determined abroad these features allow us to disentangle the structural sources of oil price fluctuations and how they affect mainland norway the estimated model provides three key results first oil price movements represent an important source of macroeconomic volatility in mainland norway second while no two shocks cause the same dynamics conventional trade channels make an economically less significant difference for the transmission of global shocks to the oil exporter than to oil importers third the domestic oil industry s supply chain is an important transmission mechanism for oil price movements while the prevailing fiscal regime provides substantial protection against external shocks

is western europe losing the technological race abstract using a variety of indicators this paper compares technological levels in japan the usa and w europe there is no justification for assuming general european technological backwardness whilst it lags in electronics and since 1975 has had a relatively slow rate of growth of innovative activities it also has sectors of strength chemicals machinery production engineering and countries whose relative commitments of resources to innovative activities are at least equal and sometimes superior to those of japan and the usa frg sweden switzerland its main policy challenges are to increase the rate of growth of innovative activities in lagging countries and to ensure pervasive applications of information technology similarly there is no convincing evidence that w europe is relatively backward in converting technology into economically efficient innovations some policy problems are significant in all three regions skill shortages whilst others are in the usa and w europe short term planning horizons of top management particular european problems are the effects of social legislation on worker flexibility and mobility of national regulations on intra european competition and of slow rates of growth of output on the growth of innovative activities japan and the usa have their problems with the latter continuously under challenge from the former and increasingly specialised in defence and raw materials related technologies

on the dynamic effects of oil price shocks a study using industry level data abstract this paper analyzes the effects of oil price shocks on demand and supply in various industries the impulse responses of identified var models indicate that for industries that have a large cost share of oil such as petroleum refinery and industrial chemicals oil price shocks mainly reduce supply in contrast for many other industries with the automobile industry being a particularly important example oil price shocks mainly reduce demand the paper suggests that oil price shocks influence economic activities beyond that explained by direct input cost effects possibly by delaying purchasing decisions of durable goods

benchmarking across borders electoral accountability and the necessity of comparison when the economy in a single country contracts voters often punish the government when many economies contract voters turn against their governments much less frequently this suggests that the international context matters for the domestic vote yet most research on electoral accountability assumes that voters treat their national economies as autarkic we decompose two key economic aggregates growth in real gross domestic product and unemployment into their international and domestic components and demonstrate that voters hold incumbents more electorally accountable for the domestic than for the international component of growth voters in a wide variety of democracies benchmark national economic growth against that abroad punishing rewarding incumbents for national outcomes that underperform outperform an international comparison tests suggest that this effect arises not from highly informed voters making direct comparisons but from pre benchmarking by the media when reporting on the economy the effect of benchmarked growth exceeds that of aggregate national growth by up to a factor of two and outstrips the international component of growth by an even larger margin implying that previous research may have underestimated the strength of the economy on the vote

do oil price shocks matter evidence for some european countries this paper analyzes the oil price macroeconomy relationship by means of analyzing the impact of oil prices on inflation and industrial production indexes for many european countries using quarterly data for the period 1960 1999 first we test for cointegration allowing for structural breaks among the variables second and in order to account for the possible non linear relationships we use different transformation of oil price data the main results suggest that oil prices have permanent effects on inflation and short run but asymmetric effects on production growth rates furthermore significant differences are found among the responses of the countries to these shocks

oil and the macroeconomy since world war ii all but one of the u s recessions since world war ii have been preceded typically with a lag of around three fourths of a year by a dramatic increase in the price of crude petroleum this does not mean that oil shocks caused these recessions evidence is presented however that even over the period 1948 72 this correlation is statistically significant and nonspurious supporting the proposition that oil shocks were a contributing factor in at least some of the u s recessions prior to 1972 by extension energy price increases may account for much of post opec macroeconomic performance

sectoral patterns of technical change towards a taxonomy and a theory abstract the purpose of the paper is to describe and explain sectoral patterns of technical change as revealed by data on about 2000 significant innovations in britain since 1945 most technological knowledge turns out not to be information that is generally applicable and easily reproducible but specific to firms and applications cumulative in development and varied amongst sectors in source and direction innovating firms principally in electronics and chemicals are relatively big and they develop innovations over a wide range of specific product groups within their principal sector but relatively few outside firms principally in mechanical and instrument engineering are relatively small and specialised and they exist in symbiosis with large firms in scale intensive sectors like metal manufacture and vehicles who make a significant contribution to their own process technology in textile firms on the other hand most process innovations come from suppliers these characteristics and variations can be classified in a three part taxonomy based on firms 1 supplier dominated 2 production intensive 3 science based they can be explained by sources of technology requirements of users and possibilities for appropriation this explanation has implications for our understanding of the sources and directions of technical change firms diversification behaviour the dynamic relationship between technology and industrial structure and the formation of technological skills and advantages at the level of the firm the region and the country

a comparison of the effects of exogenous oil supply shocks on output and inflation in the g7 countries a comparison of the effects of exogenous shocks to global crude oil production on seven major industrialized economies suggests a fair degree of similarity in the real growth responses an exogenous oil supply disruption typically causes a temporary reduction in real gdp growth that is concentrated in the second year after the shock inflation responses are more varied the median cpi inflation response peaks after three to four quarters exogenous oil supply disruptions need not generate sustained inflation or stagflation typical responses include a fall in the real wage higher short term interest rates and a depreciating currency with respect to the dollar despite many qualitative similarities there is strong statistical evidence that the responses to exogenous oil supply disruptions differ across g7 countries for suitable subsets of countries homogeneity cannot be ruled out a counterfactual historical exercise suggests that the evolution of cpi inflation in the g7 countries would have been similar overall to the actual path even in the absence of exogenous shocks to oil production consistent with a monetary explanation of the inflation of the 1970s there is no evidence that the 1973 1974 and 2002 2003 oil supply shocks had a substantial impact on real growth in any g7 country whereas the 1978 1979 1980 and 1990 1991 shocks contributed to lower growth in at least some g7 countries jel e31 e32 q43

what caused the early millennium slowdown evidence based on vector autoregressions this paper uses a simple var for the usa and euro area to analyse the underlying shocks of the early millennium slowdown i e supply demand monetary policy and oil price shocks the results of two identification strategies are compared one is based on traditional zero restrictions and as an alternative an identification scheme based on more recent sign restrictions is proposed the main conclusion is that the recent slowdown is caused by a combination of several shocks negative aggregate supply and aggregate spending shocks the increase of oil prices in 1999 and restrictive monetary policy in 2000 these shocks are more pronounced in the usa than the euro area the results are somewhat different depending on the identification strategy it is illustrated that traditional zero restrictions can have an influence on the estimated impact of certain shocks copyright 2005 john wiley sons ltd

popularity functions based on the partisan theory this paper presents popularity function estimates for u s presidents which are based on a model in which voters evaluations reflect an understanding of partisan reputations for differing policies

the seven sisters versus opec solving the mystery of the petroleum market structure abstract this paper provides an explanation of the changing behavior of the crude oil market and tests it using the u s data from january 1913 to september 2014 we claim that the crude oil market has experienced two important structural breaks in its industrial organization the first occurred when venezuela and the arab crude oil exporting countries forced the so called seven sisters to sign the fifty fifty profit sharing agreements the second occurred after opec succeeded in cracking the secrets of the international crude oil marketing and in undertaking the wave of nationalizations of the 1970s

who says it s the economy cross national and cross individual variation in the salience of economic performance theories of government approval usually assume that voters care about economic outcomes this assumption frequently does not hold data from the comparative study of electoral systems demonstrate that although the economy is often the most important issue in an election its place on the issue agenda varies across individuals and electoral contexts the economy is more likely to dominate other issue concerns under conditions of economic recession volatility and economic underdevelopment moreover at the individual level the salience of economic performance rises with unemployment and economic vulnerability governance crises related to corruption and human rights reduce attention to the economy as do large scale terrorist attacks if the economy is not perceived as important its effect on government approval is strongly mitigated thus variations in the economy s salience need to be further incorporated into studies linking economic and political outcomes

cross country differences in the effects of oil shocks abstract we compare the macroeconomic consequences of several types of oil shocks across a set of industrialized countries that are structurally very diverse with respect to the role of oil and other forms of energy in the economy the results crucially depend on the underlying source of the oil price shift when a rise in oil prices is caused by increased global economic activity or a rise in oil specific demand almost all countries experience respectively a temporary increase and transitory decline of real gdp the role of oil and other forms of energy cannot explain the differences in the effects of both shocks across countries in contrast this role is very important to explain asymmetries in the effects of exogenous oil supply shocks whereas net oil and energy importing countries typically face a permanent fall in economic activity the impact is insignificant or even positive in net energy exporting countries in addition countries that improved their net energy position the most over time became less vulnerable to oil supply shocks relative to other countries

supply shocks and price adjustment in the world oil market understanding the impacts of transitory oil supply shocks on world oil prices is crucial to the evaluation of the economic impacts of shocks and the design of policy responses to address those impacts this paper integrates short run and long run approaches to oil price determination with particular emphasis on the two price structure of the world oil market with coexisting short term spot prices and long term contract prices even transitory shocks are shown to exhibit persistence effects on long term prices some implications for econometric models of the relationship between spot and contract prices are discussed

oil shocks and production network structure evidence from the oecd abstract does the production network structure matter for the transmission of oil shocks using a bayesian time varying var the paper derives the impact of oil shocks on gdp for a set of oecd economies it further estimates various measures to characterize the production network structure based on input output matrices when the relationship between the time varying responses of gdp to oil demand and oil supply shocks and production network characteristics is analyzed the paper finds that measures like skewness in the in degrees and in the out degrees or density tend to amplify the negative impact of oil shocks on gdp the results here are in line with the recent literature that outlines the importance of network structures for aggregate dynamics

price of oil and world inflation and recession new evidence shows that the commonly held assumption that the 1973 74 oil price increase directly affected us and world inflation and subsequent recession is consistent with the empirical data an extended lucas varro real income equation applied to the us united kingdom canada france germany italy japan and the netherlands gives mixed results partly because of price control and decontrol programs simulation experiments on the price control variable using us data finds strong effects further studies can be made when consistent international data is available for the 1979 80 period 18 references 4 figures 3 tables dck

what happened to the oil price macroeconomy relationship abstract strong evidence is found that oil prices no longer granger cause many u s macroeconomic indicator variables in data after 1973 a number of potential explanations are explored that sample stability issues are responsible that oil prices are now endogenous and that linear and symmetric specifications misrepresent the form of the oil price interaction none of these hypotheses are supported by the data the opec price increases do appear to have had significant impacts while the effects of the price declines of the 1980s are smaller and harder to characterize these results have potentially important implications for the large body of research which utilizes oil prices as an instrumental or explanatory variable

oil and the macroeconomy since the 1970s economists have long been intrigued by empirical evidence that suggests that oil price shocks may be closely related to macroeconomic performance this interest dates back to the 1970s the 1970s were a period of growing dependence on imported oil unprecedented disruptions in the global oil market and poor macroeconomic performance in the united states thus it was natural to suspect a causal relationship from oil prices to u s macroeconomic aggregates since then a large body of work has accumulated that purports to establish this link on theoretical grounds and to provide empirical evidence in its support we do not attempt a comprehensive survey of this literature but rather provide an idiosyncratic synthesis of what we view as the key issues in this debate and the insights gained over the last 30 years the timing seems right for such an account although the experience of the 1970s continues to play an important role in discussions of the link between oil and the macroeconomy there have been a number of new oil price shocks since the 1970s notably the 1986 collapse of oil prices and the 2000 boom in oil prices as well as the oil price increases associated with the 1990 1991 gulf war and the 2003 iraq war given this richer case history we are arguably in a better position than two decades ago to distinguish the idiosyncratic features of each oil crisis from the systematic effects increases in oil prices have been held responsible for recessions periods of excessive inflation reduced productivity and lower economic growth in this paper we review the arguments supporting such views first we highlight some of the conceptual difficulties in assigning a central role to oil price shocks in explaining

the impact of oil price shocks evidence from the industries of six oecd countries most of the studies about the macroeconomic consequences of oil price shocks have been focused on us aggregate data in contrast to these studies this paper empirically assesses the dynamic effect of oil price shocks on the output of the main manufacturing industries in six oecd countries the pattern of responses to an oil price shock by industrial output is diverse across the four european monetary union emu countries under consideration france germany italy and spain but broadly similar in the uk and the us moreover evidence on cross industry heterogeneity of oil shock effects within the emu countries is also reported

trade linkages and macroeconomic effects of the price of oil in this paper we assess the impact of oil price shocks on oil producer and oil consuming economies var models for different countries are linked together via a trade matrix as in abeysinghe 2001 as expected we find that oil producers here russia and canada benefit from oil price shocks for example a large oil shock leading to a price increase of 50 boosts russian gdp by about 6 however oil producers are hurt by indirect effects of positive oil price shocks as economic activity in their exporter countries suffers for oil consumers the effects are more diverse in some countries output falls in response to an oil price shock while other countries seem to be relatively immune to oil price changes finally indirect effects are also detected for oil consumer countries those countries which trade more with oil producers gain indirect benefits via higher demand from oil producing countries in general the largest negative total effects from positive oil price shocks are found for japan china the usa finland and switzerland while other countries in our sample seem to have fared quite well during recent positive oil price shocks the indirect effects are negative for russia finland germany and netherlands

risks and redistribution an individual level analysis much of the disagreement in the debate about globalization and its present or absent effects on the welfare state stems from competing assumptions about the individual level determinants of redistributional preferences this article calls for and provides testing of these causal mechanisms at the individual level traditional accounts suggest that risks at the industry level are important determinants of redistributional preferences this article argues that risks at the occupational level should also be considered a comprehensive new data set is used to test whether and what types of risks in the labor market play an important role in shaping preferences statistical analyses of public opinion surveys european social survey show strong evidence for the assumed causal mechanism contrary to much of the literature but in line with this article s claims it is the occupational rather than the industry level that is most important the article lays out implications of these findings

the cost of commercializing energy inventions abstract inadequate financing is a common cause of failure among inventors and entrepreneurs striving to bring new energy technologies onto the market this paper describes the cost of commercializing energy inventions and sources of funds used by successful entrepreneurs based on data from the u s department of energy s energy related inventions program erip on average it has taken several years of work and 1 1 million for an erip technology to enter the market personal sources of funding play an important role throughout the development process while external investors are practically invisible until the technologies are into mature stages of prototype development the role for pre venture government programs is clearly indicated from these findings and is discussed

oil price shocks stock market economic activity and employment in greece abstract using a multivariate vector autoregression var approach this paper attempts to shed light into the dynamic relationship among oil prices real stock prices interest rates real economic activity and employment for greece the empirical evidence suggests that oil price changes affect real economic activity and employment oil prices are important in explaining stock price movements stock returns do not lead to changes in real activity and employment

oil prices and economic downturns the case of spain abstractwe address the macroeconomic effects of an oil price shock in spain we apply a vector autoregression model var analysis to quarterly data for the spanish economy since 1986 to elucidate the effects of variations in the oil price on the economy considering the three main causes of disruptions in the oil markets oil supply shocks oil demand shocks and oil specific precautionary demand shocks we conclude that the effects in spain strongly depend on the type of shock the consumer price index cpi has mainly been influenced by oil demand shocks output has only reacted to oil supply shocks and monetary policy has mainly reacted after precautionary shocks second round effects caused by the behaviour of nominal wages have not been found additionally we discuss two facts the ability of firms to increase markups in a context of rising demand and the procyclical role of monetary policy when faced with oil demand shocks

heterogeneity in perceptions of national economic conditions empirical findings concerning economic voting differ according to the level of analysis employed a widely accepted explanation for the inconsistency between macroand microlevel evidence of economic voting is the high degree of random variation that plagues survey data according to this explanation aggregation purges individual level noise from mass opinions on policy issues and outcomes building on the research of bartels 1996 we debate the validity of this explanation by demonstrating that public evaluations of the national economy vary systematically with information media exposure political attitudes personal experiences and demographic characteristics furthermore we show that these sources of subjective heterogeneity produce systematic biases when national economic evaluations are aggregated these findings challenge a widely accepted notion that because error in individual level measures or expressions of preferences is random the aggregation of these individual measures ensures that they correctly represent the collective preference mpirical findings concerning the influence of the economy on political behavior differ depending on the level of analysis employed using aggregate level data numerous studies have established a statistical relationship between economic conditions and election outcomes or executive popularity e g kramer 1971 mackuen erikson and stimson 1992 on the basis of the macro level evidence alone one would have little reason to doubt that the economy matters in contrast individual level studies using survey data have produced only mixed evidence that voters consider economic conditions when evaluating the incumbent government and its leaders e g fiorina 1978 1981 kinder and kiewiet 1979 1981 moreover the strongest survey evidence of economic voting suggests that voters primarily care about national economic conditions not their personal financial situation this finding contradicts the egocentric theory posited by early macro level research that national economic indicators matter because they are correlated with personal financial circumstances the micro macro dichotomy in economic voting research reflects a similar dichotomy in research on voter sophistication and representation aggregate level studies tend to indicate that voters are reasonably well informed about the economy and make forward looking rather sophisticated voting decisions e g alesina londregan and rosenthal 1993 suzuki and chappell 1996 palmer and whitten 1999 these studies infer that mass political decisions conform to rational expectations or at least limited information rationality e g mackuen erikson and stimson 1992 in contrast to this macro level image of the voter individual level survey research has shown that the public in general has low levels of political sophistication lacking much knowledge of and interest in politics e g

some determinants of cost distributions in the process of technological innovation abstract industrial research and development r d is a set of activities within the broader set of decisions and activities the process of technological innovation ti it is technology transfer commercialization of the innovation that leads to technology diffusion that permits production and employment expansion and hence economic growth an important goal of industrial policy firms managements and government policy makers should recognize the close relationships among the phases of ti and direct their policy planning budgeting and control decisions to the complete process many policies currently focus their attention to only one or a few points such as r d in this study we conducted a detailed cost analysis of a limited number of innovation projects and studied the distributions of ti cost over the process phases we find that almost half of ti costs are devoted to r d which implies that government support of this phase is important different cost patterns emerge when we classify innovations by industrial sectors firms sizes and project complexity complex innovations require larger and more variable risky r d budgets smaller firms need more assistance in technology transfer these are only a few important policy implications this study emphasizes the importance of post r d phases and concludes that differential industrial policy may be required for technological innovations

the differential effects of oil demand and supply shocks on the global economy abstract we employ a set of sign restrictions on the impulse responses of a global var model estimated for 38 countries regions over the period 1979q2 2011q2 as well as bounds on impact price elasticities of oil supply and oil demand to discriminate between supply driven and demand driven oil price shocks and to study the time profile of their macroeconomic effects across a wide range of countries and real financial variables we show that the above identification scheme can greatly benefit from the cross sectional dimension of the gvar by providing a large number of additional cross country sign restrictions and hence reducing the set of admissible models the results indicate that the economic consequences of a supply driven oil price shock are very different from those of an oil demand shock driven by global economic activity and vary for oil importing countries compared to energy exporters while oil importers typically face a long lived fall in economic activity in response to a supply driven surge in oil prices the impact is positive for energy exporting countries that possess large proven oil gas reserves however in response to an oil demand disturbance almost all countries in our sample experience long run inflationary pressures an increase in real output a rise in interest rates and a fall in equity prices

commodity prices and fiscal policy design procyclical despite a rule recent studies offer evidence of reduced fiscal procyclicality to commodity price changes in resource rich countries a feature commonly attributed to the adoption of fiscal policy rules we revisit this issue and find that by controlling for global activity shocks while allowing for time varying changes in both fiscal policy and the volatility of shocks this finding does not hold to show this we develop a time varying dynamic factor model allowing for a multiple of shocks stochastic volatility and time varying parameters and estimate it on data for norway whose handling of resource wealth is often cited as exemplary

oil prices and economic activity an asymmetric cointegration approach the aim of this paper is to study the long term relationship between oil prices and economic activity proxied by gdp to account for asymmetries existing in the links between the two variables we propose an approach based on asymmetric cointegration our empirical analysis concerns the u s economy but also the g7 europe and euro area economies results indicate that while standard cointegration is rejected there is evidence for asymmetric cointegration between oil prices and gdp

oil prices and inflation dynamics evidence from advanced and developing economies abstract we study the impact of fluctuations in global oil prices on domestic inflation using an unbalanced panel of 72 advanced and developing economies over the period from 1970 to 2015 we find that a 10 increase in global oil inflation increases on average domestic inflation by about 0 4 percentage points on impact with the effect vanishing after two years and being similar between advanced and developing economies we also find that the effect is asymmetric with positive oil price shocks having a larger effect than negative ones the impact of oil price shocks however has declined over time due in large part to a more credible monetary policy and less reliance on energy imports we further examine the transmission channels of oil price shocks on domestic inflation during the recent decades by making use of a monthly dataset from 2000 to 2015 the results suggest that the share of transport in the cpi basket and energy subsidies are the most robust factors in explaining cross country variations in the effects of oil price shocks during the period

world crude oil and natural gas a demand and supply model abstract this paper examines world markets for crude oil and natural gas over the period 1918 1999 it analyzes the time series properties of output and prices and estimates demand and supply elasticities during 1918 1973 and 1973 1999 oil and gas prices were stable during the first period they became volatile afterwards reflecting deep changes in the market structure following the oil shock in 1973 demand price elasticities were too low however demand income elasticities were high supply price elasticities were also too low the elasticity estimates help to explain the market power of the oil producers and price volatility in response to shocks and corroborate elasticity estimates in energy studies

employment insecurity incumbent partisanship and voting behavior in comparative perspective we argue that occupational unemployment rates by informing perceptions of economic insecurity serve as a salient and powerful heuristic for aggregate economic performance consequently high and

oil and the macroeconomy when prices go up and down an extension of hamilton s results in an important paper hamilton 1983 demonstrated a strong correlation between oil price changes and gross national product growth in u s data however his study pertained to a period in which all the large oil price movements were upward and thus it left unanswered the question whether the correlation persists in periods of price decline moreover the price variable he used was somewhat distorted by price controls in the 1970s this note investigates whether hamilton s results continue to hold when the sample is extended to include the recent oil market collapse and the oil price variable is corrected for the effects of price controls particular attention is given to the possibility of asymmetric responses to oil price increases and decreases as suggested in the structural employment literature loungani 1986 davis 1987 hamilton 1988 like hamilton i based my investigation on the gnp equation in sims s 1 980b six variable quarterly vector autoregressive model

expectations learning and the changing relationship between oil prices and the macroeconomy this paper estimates a structural general equilibrium model to investigate the changing relationship between the oil price and macroeconomic variables the oil price through the role of oil in production and consumption affects aggregate demand and supply in the model the assumption of rational expectations is relaxed in favor of learning oil prices therefore affect the economy through an additional channel i e through their effect on the formation of agents beliefs the estimated learning dynamics indicates that economic agents perceptions about the effects of oil prices on the economy have changed over time oil prices were perceived to have large effects on output and inflation in the 1970s but only milder effects after the mid 1980s since expectations play a large role in the determination of output and inflation the effects of oil price increases on expectations can magnify the response of macroeconomic variables to oil price shocks in the estimated model in fact the implied responses of output and inflation to oil price shocks were much more pronounced in the 1970s than in 2008 therefore through the time variation in the impact of oil prices on beliefs the paper can successfully explain the observed weakening of the effects of oil price shocks on real activity and inflation