Testing for co-integration in vector autoregressions with non-stationary volatility

Many key macroeconomic and financial variables are characterized by permanent changes in unconditional volatility. In this paper we analyse vector autoregressions with non-stationary (unconditional) volatility of a very general form, which includes single and multiple volatility breaks as special cases. We show that the conventional rank statistics computed as in  and  are potentially unreliable. In particular, their large sample distributions depend on the integrated covariation of the underlying multivariate volatility process which impacts on both the size and power of the associated co-integration tests, as we demonstrate numerically. A solution to the identified inference problem is provided by considering wild bootstrap-based implementations of the rank tests. These do not require the practitioner to specify a parametric model for volatility, or to assume that the pattern of volatility is common to, or independent across, the vector of series under analysis. The bootstrap is shown to perform very well in practice.     

REGIONAL AND SECTORAL DISAGGREGATION OF MULTI-REGIONAL INPUT–OUTPUT TABLES – A FLEXIBLE ALGORITHM

A common shortcoming of available multi-regional input–output (MRIO) data sets is their lack of regional and sectoral detail required for many research questions (e.g. in the field of disaster impact analysis). We present a simple algorithm to refine MRIO tables regionally and/or sectorally. By the use of proxy data, each MRIO flow in question is disaggregated into the corresponding sub-flows. This downscaling procedure is complemented by an adjustment rule ensuring that the sub-flows match the superordinate flow in sum. The approximation improves along several iteration steps. The algorithm unfolds its strength through the flexible combination of multiple, possibly incomplete proxy data sources. It is also flexible in a sense that any target sector and region resolution can be chosen. As an exemplary case we apply the algorithm to a regional and sectoral refinement of the Eora MRIO database.     

Consumer Choice and Health: The Importance of Health Attributes for Retail Meat Demand in Canada

Fat content is an attribute of major concern to health conscious consumers and of growing importance in the discussion of nutrition-related diseases in Canada. This paper combines multinomial logit and Almost Ideal Demand System (AIDS) analysis to investigate Canadian consumers’ preferences and retail demand for ground meat products differentiated by fat content. We apply Nielsen household and retail-level scanner data. Evidence from multinomial logit supports the hypothesis of strong habits in household's point-of-sale product choices, driven by sociodemographic characteristics and regional cultural customs. Estimates of own and cross price elasticities from the AIDS model reveal that preferences for health triumph over taste. We find that perceived healthier “extra lean” ground meats have evolved into a staple in the Canadian diet. Our results are a starting point for a more in-depth understanding of consumer behavior toward healthy food choices. This information is essential for more targeted health and nutrition policy aimed at the promotion of healthful meat choices in Canadian grocery retailing. La teneur en matière grasse est un attribut qui préoccupe les consommateurs soucieux de leur santé et un sujet qui est de plus en plus présent dans le débat sur les maladies liées à la nutrition au Canada. Le présent article combine une analyse logit multinomiale et l’analyse d’un système de demande AIDS pour étudier les préférences des consommateurs canadiens et la demande du marché de détail en produits de viande hachée différenciés par la teneur en matière grasse. Nous avons utilisé les données de Nielsen portant sur les habitudes de consommation des ménages et scannées dans les commerces de détail. Les résultats de l’analyse logit multinomiale appuient l’hypothèse selon laquelle les habitudes des ménages quant au choix de produits dans les points de vente sont bien ancrées et sont motivées par des caractéristiques sociodémographiques et des pratiques culturelles régionales. Les estimations des élasticités-prix et des élasticités-prix croisées effectuées à partir du modèle AIDS ont révélé que l’aspect « santé» des aliments l’emportait sur l’aspect « goût ». Nous avons observé que les viandes hachées très maigres perçues comme étant meilleures pour la santé sont devenues une denrée de consommation courante du régime alimentaire de la population canadienne. Nos résultats constituent un point de départ pour une étude plus approfondie sur le comportement des consommateurs concernant des choix alimentaires sains. Cette information est essentielle à l’élaboration d’une politique sur la nutrition et la santé plus ciblée visant à promouvoir des choix de viande sains dans le commerce de détail canadien.     

Sources of capabilities,integration and technology commercialization

In recent years, companies have increased their use of internal and external sources in pursuit of a competitive advantage through the effective and timely commercialization of new technology. Grounded in the resource‐based view of the firm, this study examines the effect of a company's use of internal and external sources on multiple dimensions of successful technology commercialization (TC). The study also explores the moderating role of formal vs. informal integration mechanisms on these relationships. Applying a longitudinal design and data from 119 companies, the results show that internal human and technology‐based manufacturing sources are positively associated with successful TC. Formal and informal integration mechanisms also significantly moderate the relationships observed between capability sources and TC. Copyright © 2002 John Wiley & Sons, Ltd.     

Discrete time duration models with group-level heterogeneity

Dynamic discrete choice panel data models have received a great deal of attention. In those models, the dynamics is usually handled by including the lagged outcome as an explanatory variable. In this paper we consider an alternative model in which the dynamics is handled by using the duration in the current state as a covariate. We propose estimators that allow for group-specific effect in parametric and semiparametric versions of the model. The proposed method is illustrated by an empirical analysis of job durations allowing for firm-level effects.     

ON THE WEALTH DYNAMICS OF SWEDISH FAMILIES, 1984–98

This paper focuses on three issues. First, it analyzes the increasing inequality of wealth in Sweden in terms of percentile age and birth cohort differences, and finds very weak evidence of life-cycle savings. There are rather strong birth cohort differences in wealth accumulation. Second, it is shown that bequests and inter vivo gifts contribute to the age and cohort differences in wealth, but do not increase the inequality of wealth. The third theme is mobility of wealth as a function of bequests, age, period, length of the transition period, and the magnitude of quantile differences.     

New‐Keynesian Models and Monetary Policy: A Re‐examination of the Stylized Facts*

Using an empirical New‐Keynesian model with optimal discretionary monetary policy, we estimate key parameters—the central bank's preference parameters; the degree of forward‐looking behavior in the determination of inflation and output; and the variances of inflation and output shocks—to match some broad characteristics of U.S. data. The parameterization we obtain implies a small concern for output stability but a large preference for interest rate smoothing, and a small degree of forward‐looking behavior in price‐setting but a large degree of forward‐looking in the determination of output. Our methodology also allows us to carefully examine the consequences of alternative parameterizations and to provide intuition for our results.     

Vocational education and training – an engine for economic growth and a vehicle for social inclusion?

Vocational education and training (VET) has in recent years enjoyed a revival for two major reasons. Firstly, it is regarded as a suitable means of promoting economic growth. Secondly, it is seen as a potentially powerful tool for fostering social inclusion. In this review, these assumed effects are critically examined on the basis of the vastly expanding literature in the field. Evidence of the productivity‐enhancing effects of VET at company level is quite solid, but evidence of the effect on overall economic growth is far from conclusive. The effects on social inclusion are uncertain because reform of VET systems has not been sufficient and because it has proved difficult to bring about the necessary institutional change. The review identifies policy implications and makes some suggestions for future research.     

Human capital and economic growth: Sweden 1870–2000

This paper presents newly constructed series on human capital in Sweden 1870–2000. The estimates are based on enrolment in different forms of education, stretching as far back as 1812, and the size and age distribution of the population within age range 15–65 years. The secular accumulation of human capital has closely matched the long-term trend in aggregate productivity and both grew at a rate of 2.4% annually. Our estimates differ significantly from the data attributed to Sweden in the international short-cut estimates of human capital for the period since 1960. The basic question addressed is about causality: whether human capital causes economic growth or if causality goes in the other direction. We address this problem with modified Granger-causality tests. According to our results, changes in the stock of human capital have in a systematic way preceded changes in aggregate productivity up to the structural crisis in the 1970s. This allows us to conclude that human capital has been a causal factor in Swedish economic growth since the industrialisation. However, after 1975, the growth of human capital has not been able to match the demands of the third industrial revolution. The time series of human capital stocks as well as average years of schooling for Sweden, 1870–2000, are available at: .     

Aid and Public Finance: A Missing Link?

The present consensus in the literature is that foreign aid does not have the desired positive effects on economic development. This is due in great part to poorly performing public institutions in recipient countries. In order to understand better the causes of this undesirable phenomenon, we examine the relationship between multilateral foreign aid flows and recipient countries’ public finance systems. We construct a new indicator to assess the quality of public finance, the Public Finance Institutions Quality (PFIQ) Index. For our panel of 86 countries, we find that multilateral aid flows have a negative impact on recipient country PFIQ score, whereas exogenous improvements in public finance seem to attract more aid. These results provide insight into the “black box” of governance: failure to turn aid receipts into desired results seems partly attributable to multilateral aid, in its present form, not being suited to improving a country’s public finance institutions. However, international donor organisations do seem to reward exogenous improvements in quality and reliability of public finance systems.