information rigidities and the news adjusted output gap a vector autoregressive model of actual output and expected output obtained from surveys is used to test for information rigidities and to provide a characterisation of output dynamics that accommodates these information structures news on actual and expected outputs is decomposed to identify innovations understood to have short lived effects and these are used with the model to derive a news adjusted output gap measure the approach is applied to us data over 1970q1 2014q2 and the new gap measure is shown to provide a good leading indicator of inflation

quantification and characteristics of household inflation expectations in switzerland inflation expectations are a key variable in conducting monetary policy however these expectations are generally unobservable and only certain proxy variables exist such as surveys on inflation expectations this article offers guidance on the appropriate quantification of household inflation expectations in the swiss consumer survey where answers are qualitative in nature we apply and evaluate different variants of the probability approach and the regression approach we demonstrate that models that include answers on perceived inflation and allow for time varying response thresholds yield the best results and we show why the originally proposed approach of fluri and sporndli 1987 has resulted in heavily biased inflation expectations since the mid 1990s furthermore we discuss some of the key features of swiss household inflation expectations i e the fact that there has been a shift in expectation formation since 2000 expectations are better anchored and less adaptive and there is lower disa

direct evidence on sticky information from the revision behavior of professional forecasters we provide direct evidence on the sticky information model of mankiw and reis 2002 by examining how frequently individual professional forecasters revise their forecasts we draw interest rate and unemployment rate forecasts from the monthly wall street journal surveys conducted between 2003 and 2013 consistent with the sticky information model we find that forecasters frequently leave their forecasts unrevised but find evidence that revision frequency increases following larger changes in the information set we also find revision frequencies became more sensitive to new information after the 2008 financial crisis but only weak evidence that frequent revisers forecast more accurately

stabilizing expectations at the zero lower bound experimental evidence abstract our study demonstrates how agents expectations can interact dynamically with monetary and fiscal policy at the zero lower bound we study expectation formation near the zero lower bound using a learning to forecast laboratory experiment under alternative policy regimes in our experimental economy monetary policy targets inflation around a constant or state dependent target we find that subjects expectations significantly over react to stochastic aggregate demand shocks and historical information leading many economies to experience severe deflationary traps neither quantitatively nor qualitatively communicating the state dependent inflation targets reduce the duration or severity of economic crises introducing anticipated and persistent fiscal stimulus at the zero lower bound reduces the severity of the recessions when the recovery of fundamentals is sufficiently slow participants expectations become highly pessimistic and neither monetary nor fiscal policy are effective at stabilizing the economy

sticky information phillips curves european evidence we estimate the sticky information phillips curve model of mankiw and reis 2002 using survey expectations of professional forecasters from four major european economies our estimates imply that in ation expectations in france germany and the united kingdom are updated about once a year in italy about once each six months

do people understand monetary policy abstract we combine questions from the michigan survey about future inflation unemployment and interest rates to investigate whether households are aware of the basic features of u s monetary policy our findings provide evidence that some households form their expectations in a way that is consistent with a taylor 1993 type rule we also document a large degree of variation in the pattern of responses over the business cycle in particular the negative relationship between unemployment and interest rates that is apparent in the data only shows up in households answers during periods of labor market weakness

learning from private and public observations of othersʼ actions we study how a continuum of agents learn about disseminated information by observing others actions every period each agent observes a public and private noisy signal centered around the aggregate action taken by the population the public signal represents an endogenous aggregate variable such as a price or a quantity the private signal represents the information gathered through private communication and local interactions we identify conditions such that the average learning curve is s shaped learning is slow initially intensifies rapidly and finally converges slowly to the truth we show that increasing public information always slows down learning in the long run and under some conditions reduces welfare lastly optimal diffusion of information requires that agents strive to be different agents need to be rewarded for choosing actions away from the population average

knowing what others know coordination motives in information acquisition we explore how optimal information choices change the predictions of strategic models when a large number of agents play a game with strategic complementarity information choices exhibit complementarity as well if an agent wants to do what others do they want to know what others know this makes heterogeneous beliefs di cult to sustain and may generate multiple equilibria in models with substitutability agents prefer to difierentiate their information choices we use these theoretical results to examine the role of information choice in recent price setting models and to propose modeling techniques that ensure equilibrium uniqueness

information rigidity and the expectations formation process a simple framework and new facts we propose a new approach to test the full information rational expectations hypothesis which can identify whether rejections of the null arise from irrationality or limited information this approach quantifies the economic significance of departures from the null by quantifying the underlying degree of information rigidity applying this approach to u s and international data of professional forecasters and other agents yields pervasive evidence consistent with models of imperfect information furthermore the proposed approach sheds new light on policies such as inflation targeting and those leading to the great moderation affecting expectations finally we document evidence of state dependence in the expectations formation process

aggregate fluctuations and international migration this paper studies the role of short run factors such as business cycles or changes in employment rates in explaining international migration flows we first derive a model of optimal migration choice predicting that short run economic fluctuations may trigger migration flows on top of the impact exerted by long run factors second we empirically test the magnitude of the effect of these short run factors on migration flows our results indicate that aggregate fluctuations and employment rates both affect migration flows third we provide evidence that the schengen agreement and the euro significantly raised the international mobility of workers between the member countries this article is protected by copyright all rights reserved

a quantitative comparison of sticky price and sticky information models of price setting i estimate sticky price and sticky information models of price setting for the united states via maximum likelihood techniques reaching several conclusions first the sticky price model fits best and captures inflation dynamics as well as reduced form equations once hybrid behavior is allowed second the importance of hybrid behavior in sticky price models is potentially consistent with a role for some information imperfections such as sticky information as a complement to nominal price rigidities finally the favorable results herein for the hybrid sticky price model when evaluated by statistics that summarize the relative fit of different models is consistent with the existing literature that is both supportive and dismissive of such models as this literature has largely ignored fit in evaluating such models many previous studies have focused on ancillary issues such as the standard errors associated with certain parameters or granger causality tests that may not provide much information about sticky price models

a multivariate analysis of forecast disagreement confronting models of disagreement with survey data abstract this paper documents multivariate forecast disagreement among professional forecasters and discusses implications for models of heterogeneous expectation formation disagreement varies over time and is positively correlated with general economic uncertainty the degree to which individual forecasters disagree with the average forecast tends to persist over time models of heterogeneous expectation formation can be modified by introducing heterogeneous signal to noise ratios to match this feature furthermore disagreement about correlations of different macroeconomic variables is high on average in general multivariate forecast data can be used more effectively than it has been to estimate models with heterogeneous expectations and to test the mechanisms used to generate disagreement in these models

sticky information and sticky prices abstract in the u s and europe prices change at least once a year yet nominal macro shocks seem to have real effects lasting well beyond a year sticky information models as posited by mankiw and reis 2002 sticky information versus sticky prices a proposal to replace the new keynesian phillips curve quarterly journal of economics 117 1295 1328 sims 2003 implications of rational inattention journal of monetary economics 50 3 665 690 and woodford 2003 princeton university press princeton nj can reconcile micro flexibility with macro rigidity we simulate a sticky information model in which price setters update information on macro shocks less frequently than information on micro shocks we then examine price changes in the micro data underlying the u s cpi empirical price changes react to old information just as sticky information models predict

when is sticky information more information this paper uses sectoral data to study survey based balance indices designed to capture changes in the business cycle in real time the empirical framework recognizes that when answering survey questions regarding their firm s output respondents potentially rely on infrequently updated information the analysis then suggests that their answers reflect notable information lags on the order of 71 2 months on average moreover information stickiness implies that noisy output fluctuations will be attenuated in survey answers and consequently helps explain why balance indices successfully track business cycles conversely in an environment populated by fully informed identical firms as in the standard rbc framework for example balance indices instead become degenerate finally information regarding changes in aggregate output tends to be sectorally concentrated the paper therefore illustrates how this feature of the data may be relevant for the construction of balance indices

the role of central bank transparency for guiding private sector forecasts central banks have become remarkably more transparent over the last few decades in this paper we study the effects of this evolution focusing on whether enhanced central bank transparency lowers dispersion among professional forecasters of key economic variables we use a large set of proxies for central bank transparency in 12 advanced economies we find evidence for a sizeable effect e g by announcing a quantified inflation objective or by publishing inflation and output forecasts however there are decreasing marginal effects to increases in transparency and the disagreement among the expectations of the general public is not affected this suggests that there are possible limits to transparency

monetary neutrality under evolutionary dominance of bounded rationality i introduction a key property of the dynamic relationship between money and output is that due to price stickiness monetary shocks have persistent although not permanent impacts on the real output see e g christiano eichenbaum and evans 1999 the nominal adjustment of the aggregate price level in response to a monetary shock is therefore temporarily incomplete and considerable supporting empirical evidence for price rigidity has been found in several microprice studies see e g nakamura and steinsson 2013 and klenow and malin 2011 for comprehensive discussions of these studies mankiw and reis 2002 develop a novel model of temporarily incomplete nominal adjustment based on the assumption that costly information disseminates slowly in each period a random fraction of the price setters updates itself on the state of the economy so as to compute and set the optimal price while the remaining fraction keeps setting prices based on outdated information they admit that micro foundations for price stickiness may require a better understanding of bounded rationality and that information processing is more complex than the time contingent adjustment assumed in their paper in fact as added in mankiw and reis 2011 while the cost of acquiring information may be small and may even have fallen in this information age the costs of absorbing and processing information may be rather large and actually higher today than those in the past this paper contributes to the intuition on price setting under bounded rationality by developing a model in which the share of firms that have up to date information on relative prices to establish the optimal price follows evolutionary dynamics with and without mutation and not a random dynamics a la calvo 1983 as in mankiw and reis 2002 and the related literature our aim is to devise evolutionary game theoretic dynamics to provide alternative microfoundations for a temporarily incomplete nominal adjustment following a monetary shock we investigate the behavior of the general price level in an economy in which an individual firm can either pay a cost featuring a random component to update its information set and establish the optimal price nash strategy or freely use full information from the previous period and set a one period lagged optimal price bounded rationality strategy indeed detailed empirical studies such as the investigation for the euro zone by alvarez et al 2006 have found persistent coexistence of forward looking and backward looking price setting behavior and there is also robust empirical evidence showing persistent and time varying heterogeneity both in the frequency and in the extent of information updating see e g branch 2007 coibion and gorodnichenko 2012 we then devise evolutionary game theoretic microdynamics in discrete time that by interacting with the dynamics of the macroeconomic variables affects the coevolution of the frequency distribution of information updating strategies across firms and the completeness of the nominal adjustment of the general price level to a monetary shock our model economy is composed of monopolistically competitive firms whose individual optimal price depends positively upon the prices set by others implying the existence of strategic complementarity in a given period there is a fraction of firms that set prices without perfect knowledge of the structure of relative prices and hence of the prices that other firms will be setting as they decide not to pay the information cost involved in knowing it we refer to these firms as boundedly rational firms the remaining fraction is composed of firms that decide to incur the information updating cost to obtain that perfect knowledge and we follow droste hommes and tuinstra 2002 in referring to them as nash firms as they become perfect foresight firms meanwhile the optimal price is assumed to be given as in ball and romer 1991 varying positively with the actual general price level and nominal stock of money which is publicly known

can households see into the future survey evidence from the netherlands abstract this paper presents new evidence on the expectation formation process from a dutch household survey households become too optimistic about their future income after their income has improved consistent with the overextrapolation of their experience we show that this effect of experience is persistent and that households overextrapolate income losses more than income gains furthermore older households overextrapolate more suggesting that they did not learn over time to form more accurate expectations finally we study the relationship between expectation errors and consumption we find that more overoptimistic households intend to consume more and subsequently report higher consumption even though they do not consume as much as they intended to these results suggest that overextrapolation hurts consumers and amplifies business cycles

why do forecasters disagree lessons from the term structure of cross sectional dispersion abstract key sources of disagreement among economic forecasters are identified by using data on cross sectional dispersion in forecasters long and short run predictions of macroeconomic variables dispersion among forecasters is highest at long horizons where private information is of limited value and lower at short forecast horizons moreover differences in views persist through time such differences in opinion cannot be explained by differences in information sets our results indicate they stem from heterogeneity in priors or models differences in opinion move countercyclically with heterogeneity being strongest during recessions where forecasters appear to place greater weight on their prior beliefs

fomc forecasts as a focal point for private expectations we explore empirically the theoretical prediction that public information acts as a focal point in the context of the u s monetary policy we aim at establishing whether the publication of federal open market committee fomc inflation forecasts affects the cross sectional dispersion of private inflation expectations our main finding is that publishing fomc inflation forecasts has a negative effect on the cross sectional dispersion of private current year inflation forecasts this effect is found to be robust to another survey data set and to various macroeconomic controls moreover we find that the dispersion of private inflation forecasts is not affected by the dispersion of views among fomc members

inattentive professional forecasters abstract using the ecb survey of professional forecasters to characterize expectations at the micro level we emphasize two new facts forecasters i fail to systematically update their forecasts and ii disagree even when updating it is moreover found that forecasters have predictable forecast errors these facts are qualitatively supportive of recent models of inattention and suggest a setup where agents imperfectly process information due to both sticky information a la mankiw reis and noisy information a la sims however building and estimating such an expectation model we find that it cannot quantitatively replicate the error and disagreement observed in the data

what can survey forecasts tell us about information rigidities a lot we derive common and conflicting predictions from models in which agents face information constraints and then assess their validity using surveys of consumers firms central bankers and professional forecasters we document that mean forecasts fail to completely adjust on impact to shocks leading to statistically and economically significant deviations from the null of full information the dynamics of forecast errors after shocks are consistent with the predictions of models with information rigidities the conditional responses of forecast errors and disagreement among agents can also be used to differentiate between some of the most prominent models of information rigidities

updating inflation expectations evidence from micro data utilizing the michigan household consumer survey s rotating panel microstructure we can identify if individuals have adjusted their expectations towards inflation this allows us to directly capture the updating behavior of individual consumers regarding their short and long run inflation expectations

the price is right updating inflation expectations in a randomized price information experiment abstract using a unique randomized information experiment embedded in a survey this paper investigates how consumers inflation expectations respond to new information we find that respondents on average update their expectations in response to certain types of information and do so sensibly in a manner consistent with bayesian updating as a result of information provision the distribution of inflation expectations converges toward its center and cross sectional disagreement declines we document heterogeneous information processing by gender and present suggestive evidence of respondents forecasting under asymmetric loss our results provide support for expectation formation models in which agents form expectations rationally but face information constraints

testing the sticky information phillips curve abstract i consider the empirical evidence for the sticky information model relative to the basic sticky price model conditional on historical measures of inflation forecasts the estimated structural parameters are inconsistent with an underlying sticky information model and the sticky information phillips curve is statistically dominated by the new keynesian phillips curve i find that the poor performance of the sticky information approach is driven by two key elements first the sticky information model underestimates inflation in the 1970s and overestimates inflation since the 1980s second predicted inflation from the sticky information model is excessively smooth

rational expectations and macroeconomic forecasts the article presents extensive results from testing for bias and serially correlated errors in a collection of time series of quarterly multiperiod forecasts for six variables including real gnp growth inflation and unemployment the analysis covers responses by 79 frequent participants in economic outlook surveys conducted regularly since 1968 it shows much greater incidence of apparently systematic errors for inflation than for the other variables also the tests are more favorable to composite group forecasts than to most of the individual forecast sets

government purchases reloaded informational insufficiency and heterogeneity in fiscal vars using a large bayesian var we approximate the flow of information received by economic agents to investigate the effects of changes to government purchases we document robust evidence that informational insufficiency in conventional models explains inconsistent results across samples and commonly employed identifications in recursive structural vars and expectational vars furthermore we report heterogeneous effects of components of government purchases while aggregate government purchases do not appear to produce strong stimulative effects with output multiplier around 0 7 government investment components have multipliers well above unity state and local consumption which captures investment in education and health elicits a strong response

the role of uncertainty sentiment and cross country interactions in g7 output dynamics output fluctuations in the g7 are characterised using a var model of countries actual and expected outputs and uncertainty over these new measures are developed to quantify the relative importance of economic prospects versus uncertainty global versus national effects and fundamentals versus sentiment for countries persistent output movements national and global contributions are found to be equally important across the g7 although considerable differences exist between countries uncertainty and especially cross country uncertainty is important in propagating the effects of shocks and generates around 20 of countries persistent output movements on average fundamentals dominate output movements although with an 80 20 split sentiment plays a non negligible role

testing the rationality of price forecasts new evidence from panel data this paper tests the rationality of individual price forecasts in a panel of professional forecasters here unlike in most previous studies rationality is not rejected the results here differ because 1 using individual forecasts avoids aggregation bias 2 comparison of forecasts to initial data avoids bias due to data revision 3 the professional forecasters have economic incentives to state their expectations accurately and 4 a new covariance matrix estimator consistent when forecast errors are correlated across individuals is used copyright 1990 by american economic association

when are gdp forecasts updated evidence from a large international panel based on a large international panel of surveyed gdp forecasts i analyze the frequency of forecast revisions and the factors that influence the likelihood of forecast revisions i find that each month on average 40 50 of forecasters revise their forecasts in addition i find that the likelihood of forecast revisions significantly depends on a number of factors such as the forecast horizon the business cycle or strategic interactions between forecasters my results suggest that a realistic modeling of expectations forecasts of agents has to take into account cross sectional heterogeneity strategic interaction between agents and effects of the economic environment features that existing models such as the sticky information framework are missing

macroeconomic expectations of households and professional forecasters economists have long emphasized the importance of expectations in determining macroeconomic outcomes yet there has been almost no recent effort to model actual empirical expectations data instead m acroeconomists usually simply assume that expectations are rational this paper shows that while empirical household expectations are not rational in the usual sense expectational dynamics are well captured by a model in which households views derive from news reports of the views of professional forecasters which in turn may be rational the model s estimates imply that people only occasionally pay attention to news reports this inattention generates stickyness in aggregate expectations with important macroeconomic consequences

optimal price setting with observation and menu costs we study the price setting problem of a firm in the presence of both observation and menu costs in this problem the firm optimally decides when to collect costly information on the adequacy of its price an activity which we refer to as a price review upon each review the firm chooses whether to adjust its price subject to a menu cost and when to conduct the next price review this behavior is consistent with recent survey evidence documenting that firms revise prices infrequently and that only a few price revisions yield a price adjustment the goal of the paper is to study how the firm s choices map into several observable statistics depending on the level and relative magnitude of the observation vs the menu cost the observable statistics are the frequency of price reviews the frequency of price adjustments the size distribution of price adjustments and the shape of the hazard rate of price adjustments we provide an analytical characterization of the firm s decisions and a mapping from the structural parameters to the observable statistics we compare these statistics with the ones obtained for the models with only one type of cost the predictions of the model can with suitable data be used to quantify the importance of the menu cost vs the information cost we also consider a version of the model where several price adjustment are allowed between observations a form of price plans or indexation we find that no indexation is optimal for small inflation rates

european central bank footprints on inflation forecast uncertainty the finding of the paper shows the relative effectiveness of the one size fits all policy of the european central bank the paper provides strong evidence in favor of this by testing whether the monetary policy effects footprints found in inflation uncertainty converge to a common level these footprints are measured as the fraction of the estimated policy induced reduction in this uncertainty the testing was conducted by applying a bootstrap type test in a regression of the rate of growth of these fractions on their initial values computed for 16 euro area countries jel c33 e52 e58

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

evaluating the joint efficiency of german trade forecasts a nonparametric multivariate approach i analyse the joint efficiency of export and import forecasts by leading economic research institutes for the years 1970 to 2017 for germany in a multivariate setting to this end i compute in a

information animal spirits and the meaning of innovations in consumer confidence we show that unexplained innovations in several variables representing survey responses to forwardlooking questions on the michigan survey of consumers have powerful prognostic implications for the future paths of macroeconomic variables we attempt to distinguish the hypothesis that these impulse responses indicate a causal channel from autonomous movements in sentiment to economic outcomes the animal spirits view from the alternative interpretation that the surprise confidence movements summarize information about future economic prospects the information view in natural rate models animal spirits shocks are associated with overshooting of among other variables consumption that attenuates when agents come to grips with their overreaction while information shocks about the long future are followed by gradual movements in macroeconomic variables that are not subsequently reversed in a baseline vector autoregression involving consumption income and confidence the data come down sharply in favor of the information view the impulse responses of consumption and gdp show no tendency to attenuate even after a number of years further confidence innovations have strong implications for labor productivity many quarters into the future in somewhat larger vars with an information block that includes inflation and or stock prices the impulse responses to confidence innovations continue to have the permanent shape that defines information shocks but they are smaller in magnitude we demonstrate that this is due to the fact that both inflation and stock price innovations have prognostic implications for future productivity that are very similar to the implications of innovations in confidence addition of unemployment to the system induces a transitory component that changes the shape of the impulse responses and somewhat weakens the previously airtight case against animal spirits but it does not provide constructive evidence of such effects

inflation expectations and monetary policy surprises we use monthly data across fifteen euro area economies for the period 1985 1 2015 3 to obtain monetary policy changes that can be regarded as surprises for different types of consumers a novel feature of our empirical approach is the estimation of monetary policy surprises based on changes in monetary policy that were unanticipated according to the consumers stated beliefs about the economy we go on to investigate how these monetary policy surprises affect consumers inflation expectations we find that such monetary policy surprises can have the opposite impact on inflation expectations to those obtained under the assumption that consumers are well informed about a set of macroeconomic variables describing the state of the economy more specifically when we relax the assumption of well informed consumers by focusing instead on their stated beliefs about the economy unanticipated increases in the interest rate raise inflation expectations this is consistent with imperfect information theoretical settings where unanticipated increases in interest rates are interpreted as positive news about the state of the economy by consumers that know policymakers have relatively more information this impact changes sign since the crisis

information rigidities in survey data evidence from dispersions in forecasts and forecast revisions abstract predictable forecast errors in survey data documented in the existing literature suggest a deviation from the rational expectations hypothesis and are in favor of imperfect information models such as sticky and noisy information models this article assesses the validity of the imperfect information models by establishing a linkage between dispersions in survey forecasts and survey forecast revisions we find that the dynamics of dispersion in survey forecasts are consistent with the prediction of sticky information models but at odds with that of conventional noisy information models as well as full information rational expectations models both of which assume agents continuous updating of their information sets

sticky information and model uncertainty in survey data on inflation expectations abstract this paper compares three reduced form models of heterogeneity in survey inflation expectations on the one hand we specify two models of forecasting inflation based on limited information flows of the type developed in mankiw and reis 2002 sticky information versus sticky prices a proposal to replace the new keynesian phillips curve quarterly journal of economics 117 4 1295 1328 we present maximum likelihood results that suggests a sticky information model with a time varying distribution structure is consistent with the michigan survey of inflation expectations we also compare these sticky information models to the endogenous model uncertainty approach in branch 2004 the theory of rationally heterogeneous expectations evidence from survey data on inflation expectations economic journal 114 497 non parametric evidence suggests that models which allow the degree of heterogeneity to change over time provide a better fit of the data

optimal sticky prices under rational inattention this paper presents a model in which price setting firms decide what to pay attention to subject to a constraint on information flow when idiosyncratic conditions are more variable or more important than aggregate conditions firms pay more attention to idiosyncratic conditions than to aggregate conditions when we calibrate the model to match the large average absolute size of price changes observed in micro data prices react fast and by large amounts to idiosyncratic shocks but only slowly and by small amounts to nominal shocks nominal shocks have strong and persistent real effects we use the model to investigate how the optimal allocation of attention and the dynamics of prices depend on the firms environment jel e 3 e5 d8

perceived inflation persistence this article constructs and estimates a measure called perceived inflation persistence that can be used to determine if professional forecasters inflation forecasts indicate there has been a change in inflation persistence this measure is built via the implied autocorrelation function that follows from the estimates obtained using a forecaster specific state space model findings indicate that u s perceived inflation persistence has changed since the mid 1990s with more consensus among forecasters at lower levels of persistence when compared to the autocorrelation function for actual inflation forecasters typically react less to shocks to inflation than the actual inflation data would suggest

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

dynamics in innovation systems evidence from japan s game software industry in contrast to the us and recently europe japan appears to be unsuccessful in establishing new industries an oft cited example is japan s practical invisibility in the global business software sector literature has ascribed japan s weakness or conversely america s strength to the specific institutional settings and competences of actors within the respective national innovation system it has additionally been argued that unlike the american innovation system with its proven ability to give birth to new industries the inherent path dependency of the japanese innovation system makes innovation and establishment of new industries quite difficult however there are two notable weaknesses underlying current propositions postulating that only certain innovation systems enable the creation of new industries first they mistakenly confound context specific with general empirical observations and second they grossly underestimate or altogether fail to examine the dynamics within innovation systems this paper will show that it is precisely the dynamics within innovation systems dynamics founded on the concept of path plasticity which have enabled japan to charge forward as a global leader in a highly innovative field the game software sector 2008 elsevier b v all rights reserved