Ups and downs: how wages change over the business cycle

In “Ups and Downs: How Wages Change Over the Business Cycle,” Kevin Huang discusses the shift in the cyclicality of real wages — from countercyclical before World War II to procyclical postwar. He outlines the standard explanation for this change but offers evidence of an alternative explanation: the increased role that intermediate goods play in the production process in the postwar era.Wages ; Business cycles

Temptation and Self-Control: Some Evidence from the Consumer Expenditure Survey

Temptation, Self-Control, Gul-Pesendorfer Preferences, Asset Pricing

Consistent High-Frequency Calibration

Economic models are meant to provide a framework to describe real-world economic activities. In principle, how well a model performs this task can be evaluated by how close the model's simulated activities track the observed ones. A necessary first step in simulating a model is to choose values for the model's parameters in accordance with actual economic data. A fundamental problem in economic modelling, however, is that actual economic data are sampled at time intervals that are typically longer than the decision intervals of actual economic agents. One popular resolution of this problem is to constrain the length of the decision intervals of theoretical economic agents to be equal to the length of the actual data-sampling intervals. This widely adopted approach makes it feasible to directly calibrate theoretical models to the observed data, but it can introduce substantial biases in the models' empirical performance, as demonstrated by recent research that has allowed the decision intervals to be shorter than the data-sampling intervals. This alternative, high-frequency modelling approach, however, has brought with itself a fundamental issue that direct calibration of the models' parameters is no longer feasible. In response, researchers have employed a simple, yet ad hoc, rule to transform commonly chosen lower-frequency parameter values (which can be calibrated directly from the available data) to their high-frequency counterparts. We show in this paper that this simple transformation rule has three major drawbacks. First, it produces internal inconsistencies in steady- state equilibrium conditions. Second, it is sometimes at odds with microeconomic evidence. And third, it can result in inaccurate log- linear approximations to the models' true equilibrium solutions by worsening the fit of both the transition dynamic coefficients and the point of approximation itself. We present here an alternative, coherent transformation rule for calibrating high-frequency models that directly addresses these three shortcomings. We then use our consistent transformation rule to calibrate high-frequency versions of two well- known economic models and show how it improves these models' empirical performance.calibration temporal aggregation

Vertical production and trade interdependence and welfare

The authors study international transmissions and welfare implications of monetary shocks in a two-country world with multiple stages of production and multiple border-crossings of intermediate goods. This empirically relevant feature is important, as it has opposite implications for two external spillover effects of a unilateral monetary expansion. If all production and trade are assumed to occur in a single stage, the conflict-of-interest terms-of-trade effect tends to dominate the common-interest efficiency-improvement effect for reasonable parameter values, so that the international welfare effects would depend in general on the underlying assumptions about the currencies of price setting. The stretch of production and trade across multiple stages of processing magnifies the efficiency-improvement effect and dampens the terms-of-trade effect. Thus, a monetary expansion can be mutually beneficial regardless of its source or the pricing assumptions.Production (Economic theory) ; Trade ; Monopolistic competition ; Welfare

Optimal monetary policy under financial sector risk

We consider whether or not a central bank should respond directly to financial market conditions when setting monetary policy. Specifically, should a central bank put weight on interbank lending spreads in its Taylor rule policy function? ; Using a model with risk and balance sheet effects in both the real and financial sectors (Davis, "The Adverse Feedback Loop and the Effects of Risk in the both the Real and Financial Sectors" Federal Reserve Bank of Dallas, Globalization and Monetary Policy Institute Working Paper No. 66, November 2010) we find that when the conventional parameters in the Taylor rule (the coefficients on the lagged interest rate, inflation, and the output gap) are optimally chosen, the central bank should not put any weight on endogenous fluctuations in the interbank lending spread. ; However, the central bank should adjust the risk free rate in response to fluctuations in the spread that occur because of exogenous financial shocks, but we find that the central bank should not be too aggressive in its easing policy. Optimal policy calls for a two-thirds of a percentage point cut in the risk free rate in response to a financial shock that causes a one percentage point increase in interbank lending spreads.Business cycles ; Financial markets ; Monetary policy

International real business cycles with endogenous markup variability

The aggregate impact of decisions made at the level of the individual firm has recently attracted a lot of attention in both the macro and trade literatures. We adapt the benchmark international real business cycle model to a game-theoretic environment to add a channel for the strategic interaction among domestic and foreign firms. We show how the sum of strategic pricing decisions made at the level of the individual firm can have significant effects on the volatility and cross country co-movement of GDP and its components. Specifically we show that the addition of this one channel for strategic interaction leads to a significant increase in the cross-country co-movement of production and investment, as well as a significant decrease in the volatility of investment and the trade balance over the benchmark IRBC model.Industrial organization (Economic theory) ; Business cycles - Econometric models ; International finance ; International trade - Econometric models ; Gross domestic product

Learning, adaptive expectations, and technology shocks

This study explores the macroeconomic implications of adaptive expectations in a standard real business cycle model. When rational expectations are replaced by adaptive expectations, we show that the self-confirming equilibrium is the same as the steady-state rational expectations equilibrium for all admissible parameters but that dynamics around the steady state are substantially different between the two equilibria. The differences are driven mainly by the dampened wealth effect and the strengthened intertemporal substitution effect, not by the escapes emphasized by Williams (2003). As a result, adaptive expectations can be an important source of frictions that amplify and propagate technology shocks and seem promising for generating plausible labor market dynamics.Equilibrium (Economics)

Learning, adaptive expectations, and technology shocks

This study explores the macroeconomic implications of adaptive expectations in a standard real business cycle model. When rational expectations are replaced by adaptive expectations, we show that the self-confirming equilibrium is the same as the steady state rational expectations equilibrium for all admissible parameters, but that dynamics around the steady state are substantially different between the two equilibria. The differences are driven mainly by the dampened wealth effect and the strengthened intertemporal substitution effect, not by the escapes emphasized by Williams (2003). As a result, adaptive expectations can be an important source of frictions that amplify and propagate technology shocks and seem promising for generating plausible labor market dynamics.Macroeconomics

Input-Output Structure and the General Equilibrium Dynamics of Inflation and Output

Recent empirical studies reveal that monetary shocks cause persistent fluctuations in inflation and aggregate output. In the literature, few mechanisms have been identified to generate such persistence. In this paper, we propose a new mechanism that does so. Our model features an input-output structure and staggered price contracts. Working through the input-output relations and the timing of firms\u27 pricing decisions, the model generates smaller fluctuations in marginal cost facing firms at later stages than at earlier stages and hence persistent responses of both the inflation rate and aggregate output following a monetary stock. The persistence is larger, the greater the number of production stages. With a sufficient number of stages, the real persistence is arbitrarily large

Valuation bubbles and sequential bubbles

Price bubbles in an Arrow-Debreu valuation equilibrium in infinite-time economy are a manifestation of lack of countable additivity of valuation of assets. In contrast, known examples of price bubbles in sequential equilibrium in infinite time cannot be attributed to the lack of countable additivity of valuation. In this paper we develop a theory of valuation of assets in sequential markets (with no uncertainty) and study the nature of price bubbles in light of this theory. We consider an operator, called payoff pricing functional, that maps a sequence of payoffs to the minimum cost of an asset holding strategy that generates it. We show that the payoff pricing functional is linear and countably additive on the set of positive payoffs if and only if there is no Ponzi scheme, and provided that there is no restriction on long positions in the assets. In the known examples of equilibrium price bubbles in sequential markets valuation is linear and countably additive. The presence of a price bubble indicates that the asset's dividends can be purchased in sequential markers at a cost lower than the asset's price. We also present examples of equilibrium price bubbles in which valuation is nonlinear but not countably additive.Asset price bubbles, linear valuation, sequential equilibria, valuation equilibria