Essays on Macroeconomic Forecasting and the Business Cycle


Book Description

This dissertation consists of two essays on forecasting real GDP growth and predicting recessions in the United States. In the first essay, we create a new indicator of economic activity based on a business cycle pattern, able to better forecast real output changes. The second essay utilizes the same indicator with the purpose of improving recession forecast. The accurate prediction of economic activity is valuable for the business community, policymakers, and the general public because better forecasts of GDP growth have the potential to improve economic conditions. In the first essay, we create a new indicator based on the correlation of residential and non-residential marginal product of capital (MPK) estimates and use it to improve forecasts of output growth. The correlation of residential and non-residential MPK is highly negative during recessions, while in expansions the same correlation is positive. For six out of seven expansions, the correlation of the two series becomes zero between one and three quarters before the subsequent recession. This cyclical behavior allows the use of a measure based on the correlation of the MPKs to create a better forecast of GDP growth. To this end, we compare the out-of-sample predictability of the model including the indicator against a benchmark model, and strongly reject the hypothesis of no out-of-sample predictability from the newly created indicator to GDP growth. We also provide evidence in favor of highly improved in-sample fit when the new indicator is included, and conclude that it Granger-causes GDP growth. The improvement in GDP growth forecasts is greater when an oil price measure is included in the models. The second paper employs a probit model for the US to describe the probability of an economic recession during the next five quarters, using the new indicator based on the correlation of residential and non-residential marginal product of capital. We find that in every one to three quarters prior to a recession, the correlation of the two series is not significantly different from zero, with the exception of the Great Recession. We show that models including the new measure improve both in-sample fit and out-of-sample performance when compared to nested baseline alternatives, giving accurate out-of-sample forecasts for the 1990-1991 recession. We also show that forecasts including the new indicator outperform those reported in the survey of professional forecasters, suggesting that other variables would not undo the contribution of the new indicator.







Essays in Positive Economics


Book Description

This paper is concerned primarily with certain methodological problems that arise in constructing the "distinct positive science" that John Neville Keynes called for, in particular, the problem how to decide whether a suggested hypothesis or theory should be tentatively accepted as part of the "body of systematized knowledge concerning what is."







Three Essays on Economic Forecasting and Theory Examination


Book Description

In the first chapter, Monte Carlo simulation and bootstrap methods are used to compare the actual and nominal coverage probabilities of prediction intervals constructed using the Prais-Winsten modified weighted symmetric least squares (PW-MWSLS) estimation method. The evidence suggests that the PW-MWSLS estimator, the best point predictor, for the linear trend model with first-order autoregressive errors also leads to prediction intervals with the most accurate coverage rates for the linear trend model with first-order autoregressive errors. The second chapter employs an innovative methodology to construct inflation expectations by incorporating information in the commodity futures market. The empirical results from the vector dynamic system show that the constructed expected rate of inflation series provides the best in-sample and out-of-sample forecasts over the sample period under investigation. Chapter three applies the constructed time series of inflation expectations in the second chapter to examine two broadly debated topics in the field of economics, the Fisher effect and the Phillips curve. The findings provide support for the existence of the short-run Fisher effect; and for the examination of the two main alternative specifications of the Phillips curve, the New Keynesian Phillips curve and the expectations-augmented Phillips curve, the empirical evidence is in favor of the former.




Essays in Economic Forecasting


Book Description

This thesis consists of three chapters on forecasting techniques in economics. In chapter 1, I use copulas to estimate multivariate density forecasts based on univariate densities from survey data. Survey-based predictions are often competitive to time series models in their forecasting performance but have a univariate focus and my estimation strategy exploits the information in the surveys' marginal densities. I subsequently demonstrate the importance of the multivariate aspect for forecasters. In chapter 2, we propose novel tests for forecast rationality, which are robust under the presence of Markov switching. Existing tests focus on constant out-of-sample performances or use non-parametric techniques; consequently, they may lack power against the alternative of discrete switches. Investigating the Blue Chip Fi-nancial Forecasts, we find evidence against forecast unbiasedness during periods of monetary easing. Chapter 3 provides an empirical investigation of the real-time forecasting performance of quantile regressions for predicting diferent vintages of real US GDP growth. My results indicate that quantile regressions are competitive to current benchmark models and that the insample estimation strategy matters for the performance concerning difrent data vintages.