The performance of event study approaches using daily commodity futures returns

Simulations are conducted to assess the inferential accuracy of statistical event study approaches using daily futures returns. Methods examined include constant mean return models and several regression models—OLS, GARCH(1,1), and a GARCH(1,1) model having an error term with a Student's t distribution. The simulations address four of the most commonly analyzed agricultural futures commodities—corn, soybeans, live cattle, and hogs. In terms of the size of the test statistics, constant mean return models with short normal periods perform poorly, leading to unacceptably high rejection rates of the null hypothesis. Test statistics from constant mean return models with longer normal periods, OLS, and GARCH specifications provide rejection rates largely consistent with those of a unit normal distribution. Test statistics from all models are powerful enough to detect abnormal performance levels below those that would trigger limit locks. At small levels of abnormal performance the GARCH(1,1) model with a t distribution was consistently the most powerful model. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:533–555, 2004     

Sales Responses to Recalls for Listeria monocytogenes: Evidence from Branded Ready-to-Eat Meats

The extent to which brand names insulate firms from the spillover effects of food safety events is a potentially important difference between branded products and the undifferentiated commodity products examined in earlier studies. This paper uses empirical models to measure sales losses experienced by frankfurter brands following a recall for a foodborne pathogen. Results indicate sales of recalled brands declined roughly 22% after a recall. Brand recovery, on average, began two to three months after a recall and sales approached prerecall levels within four to five months. There is no evidence that nonrecalled brands experienced sales losses.     

Drivers of environmental innovation in Majorcan hotels

Using a database of Majorcan hotels, this paper examines several previously untested determinants of environmental innovations in hotels derived from the Porter hypothesis and from the specifics of knowledge transfer in the tourism industry. The empirical analysis is original in that it distinguishes between eight types of environmental innovations. The results show that hotels’ general predisposition to implement innovations, manager remuneration based on environmental performance, staff satisfaction, environmental accounting, and trainings are important determinants of the overall environmental innovation activity of Majorcan hotels. Moreover, the use of environmental management systems is associated with innovations with cost-saving potential, whereas the hotel star category is associated with innovations that contribute to hotel quality, such as wastewater treatment, noise reduction, noise isolation, and visual impact improvements. Furthermore, high levels of staff satisfaction are related to the implementation of water-saving and noise reduction innovations, as such innovations require staff participation, whereas the role of information sources in explaining innovation adoption varies based on the technical complexity of innovations. The paper concludes with policy implications for sustainable tourism development, recommendations for the hoteliers, and directions for future research.     

New evidence on the effects of job creation schemes in Germany—a matching approach with threefold heterogeneity

This paper evaluates the effects of job creation schemes on the participating individuals in Germany. The very informative dataset at hand justifies the application of a matching estimator and allows to take account of threefold heterogeneity. The recently developed multiple treatment framework is used to evaluate the effects with respect to regional and individual heterogeneity as well as to differences in the programme sectors. The results show considerable differences with respect to these sources of heterogeneity, but the overall finding is very clear. At the end of our observation period, that is 2 years after the start of the programmes, participants in job creation schemes have a significantly lower success probability on the labour market in comparison to matched non-participants.     

Census statistics through combined use of surveys and registers?

"In this paper we present some results from a study [concerning Norway] on the feasibility of producing census statistics through the combined use of surveys and registers. The main finding is that if one is willing to relax a little on the need for accuracy of statistics for 'small' areas, the large majority of the census statistics can be produced by such a combined use of data sources."     

Tax avoidance in different firm types and the role of nonfamily involvement in private family firms

This study simultaneously distinguishes between private family firms, private nonfamily firms, public family firms, and public nonfamily firms. We show that private family firms avoid taxes less than public family firms and public nonfamily firms; however, we do not find a difference between private family firms and private nonfamily firms. Therefore, building on family firm heterogeneity, our results indicate that tax avoidance in private family firms differs depending on the involvement of nonfamily owners and/or managers. We find that private family firms that are wholly owned and managed by family members indeed avoid taxes less than private nonfamily firms.     

Economic and Systemic Explanations of Ownership Concentration among Europe's Largest Companies

The paper examines causes and effects of ownership concentration among the largest companies in 12 European countries. As a reference point the paper takes a seminal empirical study on US data and examines to what extent the model is applicable in European countries. The findings indicate that both general economic effects and system effects are significant. Ownership concentration is found to decrease with firm size and to increase with earnings volatility. But in support of the system theories advocated nationality is also found to have a significant effect which is partly attributable to institutional differences between nations such as stock market size and the frequency of large banks. Finally ownership concentration is found to have an insignificant effect on accounting profitability (return on equity)     

The optimal method for pricing Bermudan options by simulation

Least‐squares methods enable us to price Bermudan‐style options by Monte Carlo simulation. They are based on estimating the option continuation value by least‐squares. We show that the Bermudan price is maximized when this continuation value is estimated near the exercise boundary, which is equivalent to implicitly estimating the optimal exercise boundary by using the value‐matching condition. Localization is the key difference with respect to global regression methods, but is fundamental for optimal exercise decisions and requires estimation of the continuation value by iterating local least‐squares (because we estimate and localize the exercise boundary at the same time). In the numerical example, in agreement with this optimality, the new prices or lower bounds (i) improve upon the prices reported by other methods and (ii) are very close to the associated dual upper bounds. We also study the method's convergence.     

Integrating virtual reality devices into the body: effects of technological embodiment on customer engagement and behavioral intentions toward the destination

ABSTRACT

Virtual reality devices create a high integration of technologies with human senses. However, few studies analyze how embodied technologies affect customer pre-experiences with a destination. Results from a lab experiment show that compared to desktop PC and mobile phones, VR head-mounted displays generate more immersive experiences, higher sensory stimulation, more engagement, and higher behavioral intentions toward the destination. Immersion and sensory stimulation mediate the effects of technological embodiment on engagement and behavioral intentions. Furthermore, active (versus passive) tourism content strengthens these effects. Our results stress the role of technological embodiment to generate effective pre-experiences with potential tourists’ destinations.     

Are We Spending Too Many Years in School? Causal Evidence of the Impact of Shortening Secondary School Duration

During the last decade, most of the German states have abolished the final year of higher secondary schooling while keeping academic content almost unaltered. We evaluate the effects of the reform in Saxony‐Anhalt for the double cohort of graduates in 2007. In 2003, the 13th year of schooling was eliminated for students in grade 9, while tenth grade students were unaffected. This provides a natural experiment for analyzing the impact on schooling achievements and educational choice. We find negative effects on grades in mathematics, but no effects in German literature. Moreover, a significant share of females were found to delay university enrollment.