Aggregate demand shocks and economic growth

The traditional view of growth and fluctuations implies that aggregate demand shocks result in only transitory departures from trend or “normal” output, which is determined exclusively by aggregate supply factors. Using a simple dynamic framework for a less-developed economy, a series of models is developed to show that aggregate demand can have a permanent effect on economic growth. It is shown that even if the economy converges to some “normal” path, this path itself may be altered by large demand shocks, due to increasing returns and hysteresis effects in labor markets and balance of payments constraints. It is also shown that the economy may not converge to its “normal” path, in which case fiscal and monetary policy will have long-term effects on output and growth.     

Optimal stationary consumption with stochastic production and resources

Uncertainty about technology and resources is represented in terms of uncertainty about an (exogenous) environment whose successive states form a stationary stochastic process, with probabilities that are unaffected by economic decisions. The successive states of the economy depend both on the environment and on the decisions taken with regard to production and consumption. It is shown that, under conditions that are natural extensions of “neoclassical” conditions in the case of certainty, (1) Capital saturation is possible, i.e., an optimal stationary stochastic program exists, and (2) An optimal program can be sustained by a price system that takes the form of a stationary stochastic process of price vectors. In other words, an optimal stationary program can be sustained by a stochastic “equilibrium,” in which at each date the optimal production decisions maximize expected intertemporal profit, and the optimal aggregate consumption vector has minimum cost among all aggregate consumption vectors yielding no less (social) utility.     

The employability of new graduates: a study of differences between UK universities

The non-stationarity tests of Phillips-Perron (1988) (PP tests) suggest that Australian macroeconomic output possesses a stochastic rather than a deterministic log-linear trend. Kwiatkowski et al. (1991) argue that such tests have low power and propose the KPSS test, in which the null is stationary. However, the KPSS test results reinforce the PP findings for Australia. Cochrane (1988) variance ratio (VR) tests further suggest that there may be a very strong random-walk component in the Australian business cycle. Rappoport and Reichlin (1989), however, argue that all such tests are biased in favour of the stochastic trend alternative if there are trend breaks in the data. Following up on this point, the paper finds that, in Australia's case, the stochastic trend alternative is statistically dominated when the data are allowed to be characterized by a probabilistic, regime-switching, segmented trend specification. Therefore, to the extent that real business-cycle theories of the business cycle gain support from stochastic trends in real output, this latter piece of Australian evidence does not strengthen their case.     

Nonlinear trend stationarity in global and hemispheric temperatures

This study investigates the issue of whether our Earth’s surface temperature exhibits a stochastic trend. Using state-of-the-art econometrics, we analyse the latest available temperature anomaly data. Our results indicate that both global and hemispheric temperatures may appear to have a stochastic trend when in fact they are stationary around a nonlinear deterministic trend and structural breaks are responsible. Furthermore, the nonlinearity found in the temperature trend is more complex than what has been reported in previous studies.     

Stochastic growth when utility depends on both consumption and the stock level

Summary This paper examines the dynamic behavior of optimal consumption and investment policies in the aggregate stochastic growth model when utility depends on both consumption and the stock level. Such models arise in the study of renewable resources, monetary growth, and growth with public capital. The paper shows that there is a global convergence of optimal policies to a unique stationary distribution if (a) there is sufficient complementarity in the model, or (b) if there is sufficient randomness in production. Two examples illustrate the possibility of multiple stationary distributions. In one, multiple stochastic steady states exist for a generic class of production and utility functions.We thank Professors Jess Benhabib and R. Robert Russell for helpful discussions and 2 referees for constructive suggestions.     

Smooth transition trends and labor force participation rates in the United States

This paper employs smooth transition trend models to investigate the long-run time series behavior of quarterly US labor force participation rates. In particular, we examine whether long-run growth in labor force participation rates can be modeled by smooth transitions between states rather than as abrupt mean level changes or as a stochastic trend. Smooth transitions permit for non-instantaneous adjustment of individual workers to changes associated with economic events or general labor market conditions. We employ unit root testing procedures with alternatives characterized by stationary fluctuations around one or two smooth transitions in linear trend. We examine labor force participation rates by gender- and age-specific groups. The results indicate that all female and most male participation series are better characterized as stationary processes that undergo transitional deterministics.     

Are business cycles stationary fluctuations around a deterministic trend? Empirical evidence from 79 developing countries

There is a large literature that tests the univariate time series properties of the real output series following the seminal work of Nelson and Plosser (1982). Whether or not real output is characterized by a unit root process has important implications. A unit root in real output, for instance, is inconsistent with the notion that business cycles are stationary fluctuations around a deterministic trend. In this paper, we investigate the univariate time series properties of real output for 79 developing countries using the conventional augmented Dickey and Fuller (1979) unit root test, the Zivot and Andrews’ (1992) one structural break unit root test, and the Lumsdaine and Papell (1997) two structural breaks unit root test. Our main finding is that, for 40 countries, real output is stationary around a trend. This indicates that business cycles are stationary fluctuations around a deterministic trend for only 51% of the developing countries in our sample.     

The Australian Business Cycle: Its Definition and Existence*

Recent research has suggested that for a number of economies, aggregate output does not behave in a stationary way about a fixed trend Campbell and Mankiw have provided much evidence, and their techniques are adopted here to indicate that Australia's national output has behaved in a way similar to that of other similar economies.     

Aggregate fluctuations, financial constraints and risk sharing

Summary. Private information and costly state verification often result in credit rationing in models with smooth investment, affecting both loan size and total investment. The optimal contract is derived in a dynamic stochastic growth model with capital for two types of models: one with symmetric information and the other with asymmetric information and costly state verification. When all information is observed costlessly, the equilibrium optimal contract provides complete insurance to risk-averse savers against aggregate fluctuations. When information is asymmetric and there is costly state verification, the equilibrium optimal contract provides only partial insurance against aggregate shocks. The extent of insurance is measured by the marginal rate of transformation of consumption between borrowers and lenders which is closely linked to the user cost of capital. The deadweight monitoring costs create a wedge between a borrower's cost of capital and a lender's stochastic discount factor, with two results: (i) fluctuations in the user cost of capital provides a mechanism by which aggregate shocks can be␣propagated; (ii) the distribution of capital's share of output among borrowers, lenders, and monitoring costs varies even if capital's share is constant. Capital market frictions not only amplify aggregate fluctuations but also generate cross-sectional fluctuations that may not be observable in aggregate data. Received: November 17, 1997; revised version: April 20, 1998     

The Microeconomics of an R&D-Based Model of Endogenous Growth

This paper explores the microeconomic structure underlying a class of endogenous growth models in which product differentiation and stochastic quality growth coexist. The general equilibrium model generates a stationary stochastic equilibrium in which a nondegenerate ergodic distribution of firm size depends systematically on parameters of the model. Features of the model necessary for stable endogenous aggregate growth are explored, and predictions of the model are compared with microeconometric evidence on R&D intensity, firm growth, and concentration.     

Do global CO2 emissions from fossil-fuel consumption exhibit long memory? a fractional-integration analysis

In this article we use an autoregressive fractionally integrated moving average approach to measure the degree of fractional integration of aggregate world CO₂ emissions and its five components – coal, oil, gas, cement, and gas flaring. We find that all variables are stationary and mean reverting, but exhibit long-term memory. Our results suggest that both coal and oil combustion emissions have the weakest degree of long-range dependence, while emissions from gas and gas flaring have the strongest. With evidence of long memory, we conclude that transitory policy shocks are likely to have long-lasting effects, but not permanent effects. Accordingly, permanent effects on CO₂ emissions require a more permanent policy stance. In this context, if one were to rely only on testing for stationarity and non-stationarity, one would likely conclude in favour of non-stationarity, and therefore that even transitory policy shocks have permanent effects. Our fractional-integration analysis highlights that this is not the case.     

ARE OUTPUT FLUCTUATIONS TRANSITORY? NEW EVIDENCE FROM 24 CHINESE PROVINCES

Abstract. The fact that an occurrence of a unit root in real output is inconsistent with the notion that business cycles are stationary fluctuations around a deterministic trend makes this an important topic for empirical investigation. We examine this issue for 24 Chinese provinces using the recently developed Lagrange multiplier panel unit root test which allows for a structural break. Our main finding is that real gross domestic product (GDP) and real GDP per capita for Chinese provinces are stationary fluctuations around a deterministic trend.     

Three decades of money demand studies: differences and similarities

Recent empirical contributions on procyclical productivity have focused on the dynamic implications of persistent aggregate fluctuations on sectoral productivity. Given a permanent innovation in aggregate output, unobserved variations of labour (or capital) utilization may have only a transitory effect on measured productivity, whereas external effects should produce permanent effects. It is found that persistent aggregate fluctuations have a permanent effect on productivity of four-digit US manufacturing industries. While a number of alternative explanations of this evidence are discussed and ruled out, the findings are consistent with a simple model with external or thick market effects.     

The neutrality of systematic monetary policy in models with a disequilibrium price level

A condition is offered which is necessary and sufficient for the neutrality of aggregate output and the real rate of interest with respect to systematic monetary policy in a general class of stochastic macroeconomic models with rational expectations, additive disturbances, lagged information and a disequilibrium price sequence.     

Slow recoveries

Economies respond differently to aggregate shocks that reduce output. While some countries rapidly recover their pre-crisis trend, others stagnate. Recent studies provide empirical support for a link between aggregate growth and plant dynamics through its effect on productivity: the entry and exit of firms and the reallocation of resources from less to more efficient firms explain a relevant part of transitional productivity dynamics. In this paper, we use a stochastic general equilibrium model with heterogeneous firms to study the effect on aggregate short-run growth of policies that distort the process of birth, growth, and death of firms, as well as the reallocation of resources across economic units. Our findings show that indeed policies that alter plant dynamics can explain slow recoveries. We also find that output losses associated to delayed recoveries are large.     

The Ramsey Discounting Formula for a Hidden-State Stochastic Growth Process

The long term discount rate is critically dependent upon projections of future growth rates that are fuzzier in proportion to the remoteness of the time horizon. This paper models such increasing fuzziness as an evolving hidden-state stochastic process. The underlying trend growth rate is an unobservable random walk hidden by noisy transitory shocks and recoverable only as a probability distribution via Bayesian updating. A simple expression is derived for the time-declining Ramsey discount rate. The components of this hidden-state Ramsey discounting formula are then analyzed, followed by a few remarks about possible implications and applications.     

The Cyclical Behavior of Net Exports: Temporary and Persistent Movements

This paper explores the empirical relationship of net exports, domestic output, and foreign output. It presents evidence supporting a consumption-smoothing motive for trade in goods. Classical models of the international macroeconomy typically allow for trade in claims on both home and foreign output. This paper lends empirical support to this setup by showing that highly transitory shocks to output cause net exports from the country experiencing the shock to rise. Persistent shocks have opposite effects—a result consistent with the role persistent shocks play in signaling future investment opportunities.     

China's Capital and ‘Hot’ Money Flows: An Empirical Investigation

We examine time‐series characteristics of China's capital flows during 1998–2014. More specifically, we employ Kalman filtering state‐space models to gauge the relative importance of permanent and transitory components in China's overall foreign direct investment (FDI), equity, bond, other investment and bank credit flows. Our results show that only in the case of FDI are both gross inflow and net flow dominated by a permanent stochastic level, suggesting that this source of capital is largely permanent. Incorporating covariates into the state‐space models, we find that a larger difference between onshore and offshore renminbi interest rates encourages capital inflows that are dominated by a transitory component. Greater global risk perception, proxied by S&P 500's volatility index, in contrast, discourages them. These covariates imply that capital control may not be effective in stemming volatile and speculative flows. Our results on bilateral capital flows between China and the USA also suggest that these flows are less persistent and more volatile during 1998–2014 than previously found based on 1988–1997 data. Our results bear important policy implications as China engages in further reforms in its domestic financial system and greater integration with the world financial system.     

A two-sector Kaleckian model of growth and distribution with endogenous productivity dynamics

This study extends a two-sector Kaleckian model of output growth and income distribution by incorporating endogenous labour productivity growth. The model is composed of investment goods and consumption goods production sectors. The impact of a change in wage and profit shares on capacity utilisation and output growth rates at the sectoral and aggregate levels are identified. The study reveals short-run cyclical capacity utilisation rates and productivity growth dynamics. Even if the short-run steady state is stable, the capital accumulation rate in the consumption goods sector must decrease more than that in the investment sector for long-run stability. When simultaneous rises in profit shares in both the sectors affect long-run aggregate economic growth differently at a steady state, the distributional interests between the same class in different sectors may hamper the long-run economic growth. A policy message is that the effect of income distribution on industrial output growth is not always beneficial. These phenomena are specific to two-sector models and cannot be observed when using conventional aggregate growth models.     

The Great Leap Forward, Economic Reforms, and the Unit Root Hypothesis: Testing for Breaking Trend Functions in China''s GDP Data

This paper has two related objectives. The first is to evaluate empirically whether annual data for China's GDP and its sectoral components from 1952 to 1998 can be modeled more accurately as a stationary process around a breaking trend function as opposed to a unit-root process. The second is to identify the long-run growth path of the Chinese economy and shocks that are big enough to have altered the path. The conclusion that China's major output time series are trend stationary with structural breaks has significant implications for the government in policy decisions for long-run growth and short-run stabilization. It also has implications for modeling comovements between output variables and other macroeconomic variables in cointegration analysis of the Chinese economy.J. Comp. Econom., December 2000, 28(4), pp. 814–827. Department of Commerce, Massey University (Albany), Auckland, New Zealand.