Measurement error in causal analysis of panel data: Attenuated versus inflated relationships

The presence of random measurement error is commonly thought to cause attenuation of statistical relationships. While this is an unquestionable truth in bivariate analysis, it cannot be generalized to the multivariate case without qualification. This paper shows that measurement error may give rise to overestimates of parameters in causal analysis whenever there is more than one independent variable and the independent variables are correlated. If the independent variables are not measured with the same amount of reliability, there may also be considerable error in estimates of the relative magnitude of their impact. Both problems are particularly serious when the amount of measurement error is large relative to some of the causal effects such as in panel analysis with lagged dependent variables.     

Price characterization of stable allocations in exchange economies with externalities

A pure exchange economy where the consumers have utility functions U_i(v₁(x₁),…, v_m(x_m)) for i = 1,…, m and where x_j is the consumption of consumer j, is studied. U_i may be nonincreasing or nondecreasing in v_j for j ≠ i. i is said to be nonbenevolent or nonmalevolent towards j, accordingly.An allocation is stable if no coalition can redistribute what it receives in the allocation to get an allocation which is preferred, given the consumptions of the consumers in the complementary coalition. Results concerning the relation among the Paretooptimal, stable and equilibrium allocations (under different definitions of equilibrium) are given. In particular, it turns out that in case every consumer is non-benevolent towards every other consumer, the classical results, concerning the relation between Paretooptimal allocations and equilibrium allocations, can be generalized in a satisfactory way.     

Imperfect Competition in German Food Retailing: Evidence from State Level Data

An increase in the level of retail concentration in food markets across Europe has raised concerns about the implications of retail dominance in the food supply. This paper measures oligopoly and oligopsony market power in the German food retail industry and incorporate specific details about the German meat market and the European BSE crisis. In this paper, simultaneous estimates of the degree of oligopoly and oligopsony market power in the German food retail industry are derived by applying a set of monthly state level retail beef and pork marketing data in the federal state of Hessen, Germany, from 1995–2000. Results strongly suggest evidence of retail oligopoly and oligopsony power. Lerner index estimates indicate retail market power accounts for 0.5% to 11% of the retail unit margins of beef and pork.

What Drives Oil Prices? Emerging Versus Developed Economies

We explore the role of demand from emerging and developed economies as drivers of the real price of oil. Using a FAVAR model that identifies shocks from different regions of the world, we find that demand from emerging economies (most notably from Asian countries) is more than twice as important as demand from developed countries in accounting for the fluctuations in the real oil price and in oil production. Furthermore, geographical regions respond differently to adverse oil market shocks that drive up oil prices, with Europe and North America being more negatively affected than countries in Asia and South America. Copyright © 2014 John Wiley & Sons, Ltd.     

How beliefs influence behaviour: Confucianism and innovation in China

Previous studies have analysed how religious beliefs may affect economic activity. We extend this literature by examining how Confucianism is linked to innovation activity at the firm level in China. We analyse the relationship between Confucianism and several proxies for input and outputs of innovation activities. Our results show that Confucianism is significantly related to lower levels of innovation activity regardless of which measure for firm-level innovation we use. We also find that the nature of ultimate ownership influences this relationship, with innovation among state-controlled firms being significantly more affected by Confucianism. This study thus adds to the understanding of how traditional belief systems influence behaviour among economic actors.     

Workforce Composition and Innovation: How Diversity in Employees’ Ethnic and Educational Backgrounds Facilitates Firm‐Level Innovativeness

This article studies how workforce composition is related to a firm's success in introducing radical innovations. Previous studies have argued that teams composed of individuals with diverse backgrounds are able to perform more information processing and make deeper use of the information, which is important to accomplish complex tasks. We suggest that this argument can be extended to the level of the aggregate workforce of high‐technology firms. In particular, we argue that ethnic and higher education diversity within the workforce is associated with superior performance in radical innovation. Using a sample of 3,888 Swedish firms, this article demonstrates that having greater workforce diversity in terms of both ethnic background and educational disciplinary background is positively correlated to the share of a firm's turnover generated by radical innovation. Having more external collaborations does, however, seem to reduce the importance of educational background diversity. The impact of ethnic diversity is not affected by external collaboration. These findings hold after using alternative measures of dependent and independent variables, alternative sample sizes, and alternative estimation techniques. The research findings presented in this article would seem to have immediate and important practical implications. They would suggest that companies may pursue recruitment policies inspired by greater ethnic and disciplinary diversity as a way to boost the innovativeness of the organization. From a managerial perspective, it may be concluded that workforce disciplinary diversity could be potentially replaced by more external links, while ethnic diversity could not.     

The impact of advanced vocational education and training on earnings in Sweden

Researchers have established a relationship between greater education and training and higher earnings but it is difficult to infer that the former causes the latter if those with higher earnings tend to engage in more education and training. The present study attempts to control for ability and family background to see if stronger inferences can be made about education and training as the independent variable. The study focuses upon advanced vocational education and training (AVET) in Sweden. This is post‐secondary school education for individuals who are 20 years of age or older. The aim of this article is to estimate the effects of AVET on earnings by controlling for selection bias. We used various approaches such as instrumental variables, Hausman–Taylor estimates, fixed effects estimates and propensity score matching to achieve this aim. A panel, or longitudinal, data set for eight different labor markets in Sweden for the period 1996–2008 was used. The results indicate that earnings from AVET are higher than the return on investment in comprehensive education. The average effect on income is estimated to be in the range of 3–8 percent.     

Asymmetric Monotone Comparative Statics for the Industry Compositions

Within a standard model of international trade with heterogenous firms and two asymmetric countries, we derive sufficient conditions for monotone comparative statics (MCS) for the industry composition. This model outcome is defined as first‐order stochastic dominance shifts in the equilibrium distributions of all activities across active firms. MCS for the industry composition occurs in a country that experiences a decline in its costs of serving the foreign market and meanwhile experiences an increase in its level of competition. In the other country, the industry‐level implications are exactly opposite. These clear industry‐level results hold while firms respond asymmetrically to the trade shock.