analyzing u s output and the great moderation by simultaneous unobserved components this paper seeks to determine the causal interaction between structural trend and cycle innovations in an unobserved components framework of aggregate output for the purpose of identification i propose allowing for shifts in volatility this strategy provides good estimation precision when applied to u s industrial production in the early 1980s predominance of cycle shocks gives way to strong negative spillovers of trend impulses consistent with real business cycle theories the coincident reduction of macroeconomic volatility was mainly caused by pronounced dampening of transitory disturbances this is in accordance with an important role of macroeconomic policy in explaining the great moderation

intraurban residential mobility the role of transactions costs market imperfections and household disequilibrium abstract this paper presents a model of household residential search and mobility that focuses on microeconomic elements of household behavior and incorporates housing market features the model is cast explicitly in terms of a rigorous model of housing demand allowing the benefits from moving to be measured as the compensating income variation of the potential change in consumption the empirical results indicate that large changes in economic variables such as income and prices produce only small potential gains from moving and that a major factor in the moving decision is the magnitude of search and moving costs

the demand for housing in sweden equilibrium choice of tenure and type of dwelling abstract most studies of housing demand and tenure choice only identify two modes of tenure owner occupied one family houses and rental apartments furthermore they are typically based on a cross section across all households in this study we use recent swedish data to overcome these weaknesses we identify owner occupied apartments coop shares as a third mode of tenure and show that this should be treated separately we also use information about the household s own assessment of its probability of moving during the next year we demonstrate that it makes a large difference if likely movers are eliminated from the sample

an empirical investigation of alternative approaches to estimating the equilibrium demand for housing two approaches to estimating the desired or equilibrium housing demand parameters have been utilized in recent literature one approach commonly referred to as the conventional model assumes that households continuously consume their temporal equilibrium housing services where a temporal equilibrium is defined with respect to the household s current economic and demographic characteristics based upon this assumption conventional demand studies have employed random samples which include a majority of households that have not recently moved see lee and kong 6 or carliner 2 a problem with this approach is its failure to recognize moving costs households must pay to alter their housing service consumption the existence of moving costs suggests that households may not respond rapidly to changes in their desired consumption of housing but instead remain in their dwelling unit until the cost incurred from consuming the non equilibrium level of services exceeds the cost of relocating if so demand samples employed in conventional studies may include a significant number of disequilibrium observations this causes two problems first there exist measurement errors in independent variables that have changed since the household was last in equilibrium second the true equilibrium effect of an independent variable may be incorrectly estimated due to its correlation with either the occurrence of disequilibrium or the length of the housing adjustment lag the second approach to estimating the equilibrium parameters attempts to minimize these problems by restricting the sample to households that have recently moved see hanushek and quigley 3 or aaron l

life cycle and housing adjustment as explanations of residential mobility the paper develops a typology of reasons for residential mobility and systematises the many survey analyses of reasons for moving the relative importance of life cycle and housing adjustment mecha

diffusion of technical change and the decomposition of output into trend and cycle in this paper we argue that modelling the trend component in real gnp as a random walk is inconsistent with its interpretation as productivity growth as an alternative we specify the trend as an arima whose impulse response function follows an s shaped pattern reflecting the process of diffusion of technical change such an arima is employed to build and estimate an ucarima using usa postwar quarterly data we find that our model although more parsimonious fits the data equally well than the standard random walk plus ar 2 cycle moreover our model has a very low cycle trend variance ratio

oligopsony power a forgotten dimension of food marketing discussion the three papers offer engaging discussions of oligopsony power at the first handler level in agricultural markets the papers fill an important gap in the literature and thus are important reading for those interested in market power issues in markets for raw agricultural commodities in addition to making the case for increased attention to the potential for oligopsony power at the first handler level each of the papers makes important methodological contributions in offering analytical and empirical approaches for evaluating this oligopsony power although linked by a common theme the three papers differ significantly in their approaches to the market power issue as rogers and sexton note statistics on concentration at least on the sellers side of the market suggest that farm related industries are highly concentrated and that this concentration has increased significantly in recent years for example the four firm concentration ratio cr4 in the steer and heifer slaughter industry has gone from 30 in 1978 to 70 in 1988 purcell 1990a likewise the cr4 for the flour milling industry has gone from 37 in 1980 to over 65 in 1991 brester and goodwin the period 1977 87 was one of four great u s merger movements approximately 400 billion was spend on industrial mergers during this period with food and tobacco firms being the major players connor and geithman these mergers were fueled in part by relaxed restrictions on mergers by federal antitrust agencies after 1980 these statistics lead one to suspect the existence of market power influences in farm related industries however a high degree of concentration in an industry does not confirm the existence of discriminatory market power practices after many years of debate among industrial organization economists the relationship between industry concentration and the exercise of market power remains inconclusive the papers at l ast implicitly take as given the premise that industry concentration implies the existence of collusive market power practices an alternative view presented by demsetz holds that scale economies or other competitive advantages lead to increased concentration in many industries without implying the existence of welfare diminishing market power pricing practices in such cases increased concentration may result in more efficient use of resources of course this alternative view often assumes that entry and exit in an industry are relatively easy and thus that firms in highly concentrated industries are disciplined by the threat of competition evidence of scale economies in the food processing sector has been offered in recent research for example ward found that significant economies of size existed in the

taxation of capital gains on owner occupied homes the paper compares taxation on realization with taxation on accrual in the context of owner occupied housing it considers a model where the utility a household derives from housing relative to other consumption varies over the life cycle as there are sizeable transaction costs housing consumption will not even in the absence of taxes be adjusted continuously but at discrete intervals the focus of the paper is on tax effects on the length of these intervals the following results are shown u taxing true economic appreciation at the same rate as imputed rental income and other capital income will lead to a shortening of the intervals if the capital gains are taxed on accrual an increase in this tax rate holding other rates constant will lead to a shortening of the intervals if the capital gains are taxed only as they are realized an increase in this tax rate holding other rates constant may either lead to a lengthening or a shortening of the holding period shortening is more likely if transaction costs are large whereas lengthening will occur if the rate of price increase is high

identifying asymmetric effects of labor market reforms abstract this paper proposes a novel approach to identify structural long term driving forces of the labor market and their short run state dependent effects based on search and matching theory our empirical model extracts these driving forces within an unobserved components approach we relate changes in the labor market structures to reforms that enhance the flexibility of the labor market in expansion and recession results for germany and spain show that labor market reforms have substantially weaker beneficial effects in the short run when implemented in recessions from a policy perspective these results highlight the costs of introducing reforms in recessions

dynamic aspects of consumer decisions in housing markets abstract in this study we estimate a model of the joint tenure length of stay and consumption level choices of families in the housing market this is the first attempt we know of to do this type of estimation the data pertain to a single residence spell per household from the panel study of income dynamics wealthier and better educated families were found to be more mobile in terms of housing consumption after accounting for tenure choice and controlling for planned length of stay renters and owners were found to have similar demand function relationships in terms of the impacts of socioeconomic variables this confirms the notion that renters and owners are not differentiated by housing choice but simply in life cycle circumstances as to when it is optimal to own or rent

the income elasticity of demand for single family owner occupied housing an empirical reconciliation abstract past studies estimate the permanent income elasticity of demand for single family owner occupied housing to range from 0 14 to 1 5 a range much too broad to be of any use for solving policy questions data from the panel study of income dynamics are used herein to test the sensitivity of this income elasticity to several factors the results suggest that differences in sample population with respect to duration of housing tenure explain a large portion of the variation in the estimates of this elasticity the paper concludes that for short run applications the probable value of this elasticity is approximately 0 70 and for long run applications the probable value of this elasticity might best be taken as approximately 1 00

menu costs and the neutrality of money a model of endogenous price adjustment under money growth is presented firms follow s s pricing policies and price revisions are imperfectly synchronized in the aggregate price stickiness disappears and money is neutral the connection between firm price adjustment and relative price variability in the presence of monetary growth is also investigated the results contrast with those obtained in models with exogenous fixed timing of price adjustment

stochastic trends and economic fluctuations are business cycles mainly the result of permanent shocks to productivity this paper uses a long run restriction implied by a large class of real business cycle models identifying permanent productivity shocks as shocks to the common stochastic trend in output consumption and investment to provide new evidence on this question econometric tests indicate that this common stochastic trend cointegration implication is consistent with postwar u s data however in systems with nominal variables the estimates of this common stochastic trend indicate that permanent productivity shocks typically explain less than half of the business cycle variability in output consumption and investment copyright 1991 by american economic association

detecting unemployment hysteresis a simultaneous unobserved components model with markov switching abstract we construct a new markov switching unobserved components framework for analysing hysteresis effects featuring trend cycle decomposition identification of spillovers between the components and asymmetry over the business cycle the decades long upward trend in german unemployment is fully explained by hysteresis the great recession was well absorbed because both hysteresis and structural unemployment were substantially reduced after institutional reforms in contrast u s unemployment was not driven by hysteresis effects

moving costs and housing demand abstract several recent housing demand studies use samples of recent movers based on the presumption that only such households are on their demand curves we find contrary to this presumption that the absolute values of the residuals from a standard housing demand equation fall with duration in the present dwelling this shows that the correlation pattern between housing and the explanatory variables at the moving date does not correspond to the average pattern over a typical housing spell we interpret this as evidence of forward looking behavior and show how it may be handled in econometric work with cross section samples

trends and cycles in macroeconomic time series two structural time series models for annual observations are constructed in terms of trend cycle and irregular components the models are then estimated via the kalman filter using data on five u s macroeconomic time series the results provide some interesting insights into the dynamic structure of the series particularly with respect to cyclical behavior at the same time they illustrate the development of a model selection strategy for structural time series models

housing demand and disequilibrium abstract researchers have recently begun relying heavily on samples of recent movers to estimate housing demand parameters estimates from mover equilibrium and disequilibrium samples are compared to determine whether significant differences exist the results suggest that income elasticities are not affected by the sample distinctions but demographic effects vary across the different subsamples

a residence time model of housing markets abstract this paper estimates a semi markov model of housing markets in which families move from one home to another spend a random amount of time in each home and choose whether to own or to rent at each move limiting conditions of the semi markov process are used to characterize the steady state frequency of owner occupied housing and to simulate the impact of changes in housing tax policy this approach differs markedly from previous studies of housing tax policy which focus on the entire population as opposed to the movers and ignore the effect of household residence times see king 1980 rosen 1979 white and white 1977 or laidler 1969 residence times further influence the analysis by affecting the relative cost of owning to renting in the tenure choice model homeowners pay legal and realtor fees at the time they move out of their homes which renters do not have to pay the discounted value of these fees declines with length of stay and provides a structural explanation of why families with longer residence times have a greater propensity to own results from the empirical analysis suggest that the semi markov model closely predicts conditions in the united states and provide important insights into the effects of housing tax policy residence times are also found to influence household tenure choice through their impact on the discounted legal and realtor fees paid by homeowners

imperfect capital markets and the monetarist black box liquidity constraints inflation and the asymmetric effects of interest rate policy in this paper we examine the effects of unanticipated changes in interest rates on consumers expenditure in a model in which capital markets are imperfect we show that where constraints exist on the amounts individuals can borrow individuals may rationally choose to borrow up to the limits of such constraints over part of their lifetimes such liquidity constrained individuals in general have a higher marginal propensity to consume out of changes in current income than is the case with liquidity unconstrained individuals changes in interest rates which have the effect of redistributing income between liquidity constrained monetary debtors and liquidity unconstrained creditors will thus have a net effect on aggregate consumption we further show that this effect operates asymmetrically in the sense that an increase in interest rates will have a larger net impact than a fall formally we examine the impact of a change in the interest rate which we assume exogenous on the behaviour of an individual consumer the analysis is thus independent of the source of the interest rate shock 2 but we believe an important application of the model concerns the transmission mechanism through which monetary policy operates in this paper we do not consider the relationship between the supply of money and interest rates but simnply follow standard economic theory in assuming that monetary policy operates through the impact of interest rates on expenditure it is the mechanism linking interest rate changes to expenditure that has proved hard to identify and it is in this respect that our analysis may be relevant in suggesting a process through which interest rates can affect expenditure which appears to have been neglected hitherto the model provides a possible channel of transmission of monetary policy different from those usually considered 3 in so doing the model may offer some insight into the transmission processes within the monetarist black box and indeed suggests that the efficacy of monetary policy may in part depend on the existence of capital market imperfections

let s take a break trends and cycles in us real gdp abstract trend cycle decompositions for us real gdp such as the unobserved components models the beveridge nelson decomposition the hodrick prescott filter and others yield very different cycles which bear little resemblance to the nber chronology ascribes much movements to the trend leaving little to the cycle and some imply a negative correlation between the noise to the cycle and the trend we argue that these features are artifacts created by the neglect of a change in the slope of the trend function once this is accounted for all methods yield the same cycle with a trend that is non stochastic except for a few periods around 1973 the cycle is more important in magnitude than previously reported and it accords well with the nber chronology our results are corroborated using an alternative trend cycle decomposition based on a generalized unobserved components models with errors having a mixture of normals distribution for both the slope of the trend function and the cyclical component

the cyclical component of u s economic activity quarterly data on industrial production and deflated gross national product in the united states from 1947 through 1985 are decomposed into independent nonstationary trend and stationary cycle components using kalman filtering and smoothing techniques estimates of the model parameters imply that at least half of the quarterly innovation in u s economic activity can be attributed to a stationary cyclical component that persists over periods of time as long as five years this finding is inconsistent with the hypothesis that most of the apparent variation in u s economic activity can be attributed to a nonstationary trend component

hours per capita and productivity evidence from correlated unobserved components models recent studies debate the effect of a permanent productivity shock on hours per capita within a structural var context this paper examines the issue using a correlated unobserved components uc framework the estimates show that permanent shocks to productivity are negatively correlated with transitory shocks to hours this result is robust for non stationary or levels stationary specifications of hours model comparisons indicate that the data do not favor imposing var type restrictions on the uc models copyright 2008 john wiley sons ltd

the relationships between permanent and transitory movements in u s output and the unemployment rate this paper estimates the permanent and transitory movements in u s output and the unemployment rate and the relationships between them the results suggest that permanent movements in u s output and the unemployment rate are important for explaining overall fluctuations further the correlation between changes in these series arises in large part due to the relationship between their permanent components

bayesian counterfactual analysis of the sources of the great moderation we use counterfactual experiments to investigate the sources of the large volatility reduction in us real gdp growth in the 1980s contrary to an existing literature that conducts counterfactual experiments based on classical estimation and point estimates we consider bayesian analysis that provides a straightforward measure of estimation uncertainty for the counterfactual quantity of interest using blanchard and quah s 1989 structural var model of output growth and the unemployment rate we find strong statistical support for the idea that a counterfactual change in the size of structural shocks alone with no corresponding change in the propagation of these shocks would have produced the same overall volatility reduction as what actually occurred looking deeper we find evidence that a counterfactual change in the size of aggregate supply shocks alone would have generated a larger volatility reduction than a counterfactual change in the size of aggregate demand shocks alone we show that these results are consistent with a standard monetary var for which counterfactual analysis also suggests the importance of shocks in generating the volatility reduction but with the counterfactual change in monetary shocks alone generating a small reduction in volatility copyright 2007 john wiley sons ltd