Alternative econometric implementations of multi-factor models of the U.S. financial markets

This paper analyzes the empirical performance of two alternative ways in which multi-factor models with time-varying risk exposures and premia may be estimated. The first method echoes the seminal two-pass approach introduced by Fama and MacBeth (1973). The second approach is based on a Bayesian latent mixture model with breaks in risk exposures and idiosyncratic volatility. Our application to monthly, 1980–2010 U.S. data on stock, bond, and publicly traded real estate returns shows that the classical, two-stage approach that relies on a nonparametric, rolling window estimation of time-varying betas yields results that are unreasonable. There is evidence that most portfolios of stocks, bonds, and REITs have been grossly over-priced. On the contrary, the Bayesian approach yields sensible results and a few factor risk premia are precisely estimated with a plausible sign. Predictive log-likelihood scores indicate that discrete breaks in both risk exposures and variances are required to fit the data.     

Regional consumption of antibiotics: A demand system approach

Through this paper, we have attempted to model the demand for different classes of antibiotics used for respiratory infections in outpatient care in Switzerland using a spatial version of the linear approximate Almost Ideal Demand System (AIDS) model. This model takes spatial dependency into account by means of spatial lags of antibiotic budget shares. We control for the health status of patients and the potential harmful effects of antibiotic use in terms of bacterial resistance. Elasticities to socioeconomic determinants of consumption and own- and cross-price elasticities between different groups of antibiotic have also been computed in this paper. Significant cross-price elasticities are found between newer or more expensive generations and older or less expensive generations of antibiotics.     

What are the Trade Spill-Overs from Fiscal Shocks in Europe? An Empirical Analysis***

We use a Vector Auto Regression (VAR) analysis to explore the (trade spill-over) effects of fiscal policy shocks in Europe. To enhance comparability with the existing literature, we first analyse the effects of these shocks at the national level. Here, we employ identification based on Choleski decomposition and a structural VAR, both of which lead to the same results. Then, we turn to study the cross-border spill-overs of fiscal shocks via the trade channel. Fiscal expansions in Germany, France and Italy lead to significant increases in imports from a number of European countries. In order to mimic the case of monetary union, we also shut off the effects via the short-term interest rate and the nominal exchange rate and find a slight strengthening on average of the cross-country spill-overs from a fiscal expansion. These results suggest that it may be worthwhile to further investigate the possibility of enhanced fiscal coordination.*** This research is part of the RTN project ‘Macroeconomic Policy Design for Monetary Unions’, funded by the European Commission (contract number HPRN-CT-2002-00237). We thank two anonymous referees, a referee for the ECB Working Paper series, Peter Claeys, David-Jan Jansen, Franc Klaassen, Roberto Perotti and audiences at the Dutch Central Bank and the CEPR/CREI Conference ‘Designing a Macroeconomic Policy Framework for Europe’ (Barcelona, 2004) for many helpful comments. A large part of this paper was written while Beetsma was visiting the Directorate-General for Research of the ECB. He thanks the ECB for the stimulating research environment. The views expressed in this paper are those of the authors and do not commit any of.cial institution. The usual disclaimer applies.     

Collaboration practices, strategic capabilities and performance in Japanese and American product development: Do they differ?

Do New Product Development (NPD) collaboration practices differ across national subsets and, if so, does this make a difference to overall NPD performance? To address these questions, we studied the NPD programs of both Japanese and American firms and explored whether there are differences between the use of internal and external collaboration and strategic innovation practices. We further examined whether this had any significant effects on overall program performance. We found that the American firms we surveyed used collaboration practices significantly more often than the Japanese firms. However, when taking all factors into consideration, only strategic innovation capabilities were significantly linked with both overall performance and nationality. Thus, the use of collaboration without developing innovation capabilities is not enough for performance effects.     

Eastern European Economic Integration and Foreign Direct Investment

Economic transition in Eastern Europe should generate market growth. In addition, current discussions on economic integration and the development of a free-trade area in Eastern Europe will improve market accessibility. These two forces will significantly affect the strategies by which external firms will choose to supply markets in Eastern Europe. This paper examines the ways in which supply strategy is likely to change. We show that both market growth and improved market accessibility will lead the external firms to switch from exporting to foreign direct investment. However, market growth is likely to lead to dispersed investment in the growing economies, whereas increased market accessibility, by establishing an integrated regional bloc in Eastern Europe, is more likely to lead to concentrated investment plus infra-regional exports to the remainder of the regional bloc. The switch from exporting to local production through foreign direct investment will favor consumers through lowered prices but will harm national producers by depressing profit margins.     

High equity premia and crash fears - Rational foundations

Summary. We show that in a Lucas endowment economy in which the process for dividends is described by a lattice tree subject to infrequent but observable structural breaks, in equilibrium recursive rational learning may inflate the equity risk premium and reduce the risk-free interest rate for low levels of risk aversion. The key condition for these results to obtain is the presence of sufficient initial pessimism. The relevance of these findings is magnified by the fact that under full information our artificial economy cannot generate asset returns matching the empirical evidence for any positive relative risk aversion.Received: 20 September 2003, Revised: 27 April 2005, JEL Classification Numbers: D83, E44, G12.I am indebted to Mordecai Kurz (the co-Editor), one anonymous Referee, Gabriele Camera, Sadayuki Ono, Olesia Verchenko, and Allan Timmermann for many useful comments. I also think seminar paticipants at the European Economic Association meetings in Stockholm (August 2003) and the Midwest Economics Association in St. Louis (March 2003).