Real versus monetary business cycle theory and the statistical characteristics of output fluctuations

Doubt has been cast on the ability of monetary models to explain output fluctuations adequately, for conventional monetary models cannot account for non-stationarity or the permanence of output innovations. This note shows that purely monetary models can account for these characteristics once we allow technology to be endogenous, so that recent statistical work does not constitute a refutation of monetary models of the business cycle.     

Monetary and real shocks in a monetary Union: The Swiss case

We analyze to what extent real and monetary shocks affect price levels and real exchange rates in seven Swiss regions. A structural time series model is set up and estimated using the Kalman filter under two assumptions on the persistence of monetary shocks. We find that the variability of changes in price levels is mainly due to real shocks. The variance of monetary shocks is small but the monetary component of inflation differences across regions differs from zero with some persistence. As the Swiss case shows this does not seem to be a major obstacle to forming a monetary union.We thank Ernst Baltensperger, Tobias Rötheli, and participants at the Econometric Society European Meeting 1994 for stimulating discussions. The paper has also benefitted from constructive comments of two anonymous referees. Both authors gratefully acknowledge financial support provided by the Swiss National Foundation through Grants no: 8210-040206 (T.J.) and 12-40498.94 (C.L.).     

Shirking in a monetary business cycle model

Abstract .  This paper investigates whether a limited participation model with imperfectly observed effort can reproduce the economy's responses to a monetary policy shock without appealing to high labour supply elasticities or high markups. The results demonstrate that the presence of imperfectly observed effort, in combination with the limited participation assumption, allows the model to account for the presence of involuntary unemployment, nominal wage rigidity, and the observed responses to monetary policy shocks.     

Unions, monetary shocks and the labour market cycle

This paper provides a new growth model by considering strategic behaviour in the supply of labour. Workers form a labour union with the aim of manipulating wages for their own benefit. We analyse the implications on labour market dynamics at business cycle frequencies of getting away from the price-taking assumption. A calibrated monetary version of the union model does quite a reasonable job in replicating the dynamic features of labour market variables observed in post-war U.S. data.     

Public investment and regional business cycle fluctuations in Japan

This article examines the relationship between public investment and regional business cycle fluctuations in Japan. In particular, we focus on the effects of ‘discretionary’ changes in public investment, a portion of investment unrelated to the current state of macroeconomic circumstances. The empirical results show that such portions of public investment amplify regional business cycle fluctuations.     

The business cycle and the equity risk premium in real time

Building on the stochastic discount factor model, we estimated a multivariate exponential GARCH-in-mean model to analyze the link between the business cycle and the equity risk premium in the United States. In order to measure the business cycle, we used revised and real-time monthly data on industrial production for the period from 1965 to 2008. The main result of our empirical analysis is that estimates of the equity risk premium based on real-time macroeconomic data may significantly differ from estimates of the equity risk premium based on revised macroeconomic data.     

Estimating parameters of real business cycle models

The calibration technique is the most common procedure to match the data generated from an equilibrium business cycle model with actual macroeconomic time series. This paper goes a step further and tests and applies a maximum likelihood procedure, in combination with the simulated annealing, to estimate the parameters of a baseline RBC model from U.S. macroeconomic time series data. The procedure is tested on a simulated data set where the parameters are known and then applied to U.S. time series data. This permits us to evaluate the efficiency of the procedure and the extent to which the RBC model is a good representation of macroeconomic data.     

Observed expectations,news shocks,and the business cycle

This paper exploits information from the term structure of survey expectations to identify news shocks in a DSGE model with rational expectations.We estimate a structural business-cycle model with price and wage stickiness. We allow for both unanticipated and anticipated components (“news”) in each structural disturbance: neutral and investment-specific technology shocks, government spending shocks, risk premium, price and wage markup shocks, and monetary policy shocks.We show that the estimation of a standard DSGE model with realized data obfuscates the identification of news shocks and yields weakly or non-identified parameters pertaining to such shocks. The identification of news shocks greatly improves when we re-estimate the model using data on observed expectations regarding future output, consumption, investment, government spending, inflation, and interest rates - at horizons ranging from one-period to five-periods ahead.The news series thus obtained largely differ from their counterparts that are estimated using only data on realized variables. Moreover, the results suggest that the identified news shocks explain a sizable portion of aggregate fluctuations. News about investment-specific technology and risk premium shocks play the largest role, followed by news about labor supply (wage markup) and monetary policy.     

Intangible capital in a real business cycle model

Recent empirical studies have shown that intangible capital plays an important role in explaining productivity gains that have occurred during the last two decades. By introducing intangible capital in an otherwise standard theoretical real business cycle model, this paper aims to provide a theoretical foundation of the empirical findings. Our results indicate that investment in intangible capital is pro-cyclical. Both transitory as well as permanent productivity shocks increase investment in intangible capital. However, in case of a permanent technology shock we learn that firms allocate more labor and physical capital to the creation of intangible capital which increases future profits at the cost of current profit. We also find that investment in intangible capital plays an important role in producing endogenous movements in productivity.     

On business cycle fluctuations in USA macroeconomic time series

This study employs eighteen USA macroeconomic time series variables to investigate possible existence of asymmetries in business cycle fluctuations in the series. Detection of asymmetric fluctuations in economic activity is important for policymakers since effective monetary policy relies on asymmetric business cycle fluctuations in all the series. The asymmetric deviations from the long-term growth trend in each of the series are modeled using regime switching models and artificial neural networks. The results based on nonlinear switching time series models reveal strong evidence of business cycle asymmetries in most of the series. The results based on in-sample approximations from artificial neural networks show statistically significant evidence of asymmetries in all the series. Similar results are obtained when jackknife out-of-sample approximations from artificial neural networks are used. Thus, the study results show statistically significant evidence of asymmetries in all the series which indicates that business cycle fluctuations in the series are asymmetric, thus alike. Therefore, the impact of monetary policy shocks on the output and the other macroeconomic variables can be anticipated using nonlinear models only. The results on asymmetric business cycle fluctuations in real GDP are in line with recent studies but in sharp contrast with Balke and Fomby (1994).     

Investment-specific shocks and real business cycles in emerging economies: Evidence from Brazil

This paper investigates the role of the RBC (Real Business Cycle) model with investment-specific technology shocks in explaining business cycle fluctuations in Brazil. I consider the role of transitory and permanent components of neutral and investment-specific technology shocks. I fit the model to the data using Bayesian techniques to show that the investment-specific shocks are important sources of fluctuations in the estimated model. In fact, in the context of the model, investment-specific shocks can account for remarkable percentages of fluctuations in consumption growth, GDP growth, investment growth and trade balance to GDP ratio. Furthermore, I present simulation evidence showing that the RBC model cannot account for some important features of the data.     

Sectoral shocks and business cycles: a disaggregated analysis of output fluctuations in the UK

In this paper we first show that it is possible to modify linear real business cycle models to allow for disaggregate (industry-specific) factors in the generation of macroeconomic fluctuations. We then try to determine the relative importance of aggregate and sectoral shocks by doing principal components analysis on the residuals from a VAR of output growth rates in 19 UK industrial sectors. We find that a significant percentage of the innovations in sectoral output growths can be accounted for by a single unobserved component. However, since the model only sets an upper bound to the explanatory power of aggregate impulses, the importance of using sectoral data to extract additional information to bear on the analysis of economic fluctuations is confirmed by our findings.     

The role of monetary policy credibility in explaining the decline in exchange rate pass-through in South Africa

This paper investigates the key factors that explain the documented decline in the exchange rate pass-through in South Africa over the past two decades. The paper finds that this outcome is largely due to improved monetary policy credibility. The South African Reserve Bank has become more credible since the adoption of the inflation target regime through improved communication, transparency, and independence. We show that credibility is enhanced through a gradual disinflation process and reduction of inflation volatility. As result, expectations of agents have become well-anchored at levels that are consistent with its objectives of keeping inflation within the official target range of 3–6 percent even in the presence of external shocks. This in turn reduces the exchange rate pass-through. This finding is important from a monetary policy perspective not only for South Africa but other emerging economies such as Turkey as it shows that improving monetary policy credibility is a key ingredient to reducing exchange rate pass-through.     

Why have business cycle fluctuations become less volatile?

This paper shows that a standard Real Business Cycle model driven by productivity shocks can successfully account for the 50% decline in cyclical volatility of output, its components, and labor input that has occurred since 1983. The model is successful because the volatility of productivity shocks has also declined significantly over the same time period. We then investigate whether the decline in the volatility of the Solow Residual is due to changes in the volatility of some other shock operating through a channel that is absent in the standard model. We therefore develop a model with variable capacity and labor utilization. We investigate whether government spending shocks, shocks that affect the household’s first order condition for labor, and shocks that affect the household’s first order condition for saving can plausibly account for the change in TFP volatility and in the volatility of output, its components, and labor. We find that none of these shocks are able to do this. This suggests that successfully accounting for the post-1983 decline in business cycle volatility requires a change in the volatility of a productivity-like shock operating within a standard growth model. We thank Stephen Parente, Ed Prescott, John Taylor, and two anonymous referees for helpful comments and suggestions.     

Technology shocks, structural breaks and the effects on the business cycle

It is shown that time-series of US productivity and hours are apparently affected by a structural break in the late 60s. Moreover, the importance of technology shocks over the business cycle has sharply decreased after the break.     

The role of financial shocks in business cycles with a liability side financial friction

The paper investigates the role of investment specific technology shock within the particular type of financial friction of Gertler and Karadi (2011) and the impact of direct financial shock into this, such as a net worth shock, using US data. The paper explicitly shows how the bank balance sheet effect of counter cyclical movement of capital price attenuates such investment shocks and the extent depends on the type of financial shocks included in the model. Because of the construction of capital quality shock in such financial friction model, we need to incorporate a direct net worth shock while analysing the role of financial shock. This highlights finance sector as a fundamental source of shocks apart from amplifier of shocks originating in elsewhere of the economy.     

Demand shocks and economic fluctuations

This paper studies conditions under which demand-side shocks can generate realistic business cycles in RBC models. Although highly persistent demand shocks are necessary for generating procyclical investment, variable capacity utilization and habit formation can reduce the required degree of persistence.