Models for which the MLE and the conditional MLE coincide

The MLE, CMLE and MMLE coincide in a linear regression model with fixed individual effects. In this case, there is no incidental parameters problem and the MLE is consistent. The equivalence of these estimators is important because CMLE=MLE implies both the consistency of the MLE and the efficiency of the CMLE. In general, we cannot expect to find a CMLE or MMLE, since there may be no fixed-dimension sufficient statistic for the effects, nor an appropriate transformation of the data whose distribution does not depend on the effects. However, we show that the MLE, CMLE and MMLE do coincide in systems of seemingly unrelated regressions and in systems of simultaneous equations. We establish this result for systems in which (exogenous) variables in addition to (or other than) the intercept may have coefficients which vary over individuals, provided that the set of such variables is the same in every equation.The financial support of the National Science Foundation is gratefully acknowledged.     

The relationship between major-league sports’ official sponsorship announcements and the stock prices of sponsoring firms

This study presents analysis of the impact of “official product” sports sponsorships with the National Football League (NFL), Major League Baseball (MLB), the National Hockey League (NHL), the National Basketball Association (NBA), and the Professional Golfers Association (PGA) on the stock prices of sponsoring firms. The primary finding of the study is that, in the main, announcements were accompanied by increases in shareholder wealth. The 53 sponsors analyzed experienced mean increases in stock valuations of about $257 million. A multiple regression analysis of firm-specific stock price changes and selected corporate and sponsorship attributes indicates that official product sponsorships with the NBA, NHL, and PGA and those with smaller market shares were associated with the largest gains in share prices. Although corporate cashflow (a proxy for agency conflicts) is statistically unrelated to shareholder approval, sponsorships by high-technology companies were associated with stronger stock price reactions than otherwise. Finally, product congruence with the sponsored sport was positively related to changes in stock prices. T. Bettina Cornwell (b.cornwell@business.uq.edu.au) is Professor of Marketing and Leader of the Marketing cluster in the UQ Business School at the University of Queensland, Australia. She was formerly Professor of Marketing in the Fogelman College of Business and Economics at the University of Memphis. She received her Ph.D. from the University of Texas. Her research focuses on promotion and consumer behavior, especially with regard to international and public policy issues. Other articles on the topic of sponsorship-linked marketing have recently appeared in theJournal of Advertising, the Journal of Advertising Research, theJournal of Business Research, andPsychology & Marketing. Stephen W. Pruitt (pruittst@umkc.edu) is the holder of the Arvin Gottlieb/Missouri Endowed Chair of Business Economics and Finance in the Henry W. Bloch School of Business and Public Administration at the University of Missouri-Kansas City. He received his Ph.D. from Florida State University. He has published more than 45 articles, most of which employ event study methodologies, in journals such as theJournal of Finance, theJournal of Political Economy, Financial Management, theJournal of Public Policy and Marketing, and theJournal of Advertising Research. John M. Clark (clarkj@cba.usm.edu) is an assistant professor of finance at the University of Southern Mississippi. He received his Ph.D. from the University of Alabama. His research interests include options and other derivatives, investments, and the impact of real events upon the stock prices of corporations. His work has appeared in scholarly outlets such as theJournal of Advertising Research, theFinancial Review, and theJournal of Business Ethics.     

Successfully integrating your health and welfare benefits

The process of integrating health and welfare plans during an M&A is challenging. At the same time, it can be exciting and possibly even desirable for the growth of a benefits plan. An M&A can be the vehicle for ushering in changes that would not be possible under the current employers' plans. It gives additional leverage with vendors. It may supply the momentum to clear up nagging problems or to address underlying benefits concerns.     

Estimating Radial Measures of Productivity Growth: Frontier vs Non-Frontier Approaches

In this paper, we propose an alternative econometric framework for estimating and decomposing productivity change that does not require a distribution for inefficiency or the uncorrelatedness between inefficiency and the regressors. We develop our methodology for the input-oriented radial measure of productivity change and establish that this equals the negative of the time change in the log cost function. Our econometric framework is based on a fixed-effects, multiple-output cost frontier, where we decompose productivity change into discrete shifts in the frontier and changes in firm efficiency levels relative to the frontier. We also show that the standard non-frontier specification is nested within our frontier model and thus can produce different estimates of productivity change. Using a panel of twelve US railroads from 1951 to 1975, our estimated cost frontier suggests average annual productivity growth of roughly 0.3 percent, with efficiency change rising then falling over the period. Specification tests reject the non-frontier model, which yields smaller gains in productivity.     

The impact of title event sponsorship announcements on shareholder wealth

Title sponsorships are often considered the crown jewels of sports sponsorship programs. Garnering top media coverage, title sponsorships are prized for both generating brand/product awareness and building image for their sponsors. Not surprisingly, the rising cost of title sponsorships has led some managers to question their underlying value. Accordingly, this study presents an analysis of the impact of 114 title sponsorship announcements of professional tennis and golf tournaments (both men’s and women’s), auto racing (NASCAR), and college bowl games on the stock prices of sponsoring firms. Overall, the results of the study suggest that title sponsorships are generally signed at market-clearing prices. Thus, companies undertaking title sponsorships typically receive exactly what they pay for—except in the case of NASCAR races (which show evidence of increases in share prices). Splitting the sample into new and renewing sponsorships generates results which differ dramatically by sport. Finally, a cross-sectional regression finds congruence of sport and sponsor, sponsorship by high tech firms and sponsorships by large firms all correlated with perceived sponsorship success.     

A question of ethics: Developing information system ethics

This study develops a pedagogy for the teaching of ethical principles in information systems (IS) classes, and reports on an empirical study that supports the efficacy of the approach. The proposed pedagogy involves having management information systems professors lead questioning and discussion on a list of ethical issues as part of their existing IS courses. The rationale for this pedagogy involves (1) the maturational aspects of ethics, and (2) the importance of repetition, challenge, and practice in developing a personal set of ethics. A study of IS ethics using a pre-post test design found that classes receiving such treatment significantly improved their performance on an IS ethics questionnaire. It appears to me that in Ethics, as in all other philosophical studies, the difficulties ... are mainly due to ... the attempt to answer questions, without first discovering precisely what question it is which you desire to answer. George Edward Moore, Principia Ethica [1903], preface. Eli Cohen is an associate professor of Management Information Systems at Bradley University, Peoria, Illinois. He received his Ph.D. from Indiana University and holds CDP, CCP, CSP and CDE certificates. He is also Midwest Editor for Government Technology Magazine.Larry Cornwell is professor of Business Management and Administration at Bradley University, Peoria, Illinois. He is the recipient of the 1988 Midwest Grain Teaching Award and has extensive consulting experience to industry. He received his Ph.D. from the University of Missouri at Rolla. He has numerous publications in statistics, mathematical programming, computer science and information systems.     

Measuring the welfare effects of tax changes using the LES: An application to a carbon tax

This paper explores the use of a parametric approach to the measurement of compensating and equivalent variations resulting from price changes. The approach is based on the application of the Linear Expenditure System (LES) to each of a range of household income groups, rather than being based on a representative consumer. The method is then used to examine the distributional effects of a carbon tax, designed to reduce carbon dioxide emissions. The price changes resulting from a carbon tax depend on the carbon intensities of each good, which depend in turn on the nature of inter-industry transactions (the input-output matrix). The use of transfer payments to compensate for adverse distributional effects of a carbon tax is investigated, using social welfare functions based on equivalent incomes.     

Triple acculturation: The role of African Americans in the consumer acculturation of Kenyan immigrants

The role of a subcultural group in the consumer acculturation of Kenyan immigrants is examined. Our findings demonstrate that particular immigrant consumer behaviors are influenced by triple acculturation forces: dominant; subcultural and original culture. We find that immigrants do not arrive in the United States aware of their need to acculturate to a subcultural group. Critical incidents alert the immigrants of the need to acculturate to the African American subculture in order to fulfill some basic consumer goals such as accessing hair care, nightclub entertainment and church services. Progressively, immigrants begin to incorporate triple acculturation forces in their consumer decision making. The immigrants learn to be innovative as well as to engage in satisficing as they navigate the new consumption environment. This research contributes to acculturation studies by extending the models of Berry (Berry JW. Acculturation as varieties of adaptation. In: Padilla AM, editor. Acculturation: theory, model and some new findings, Boulder, CO: Westview Press; 1980. pp. 9-25) as well as Penaloza (Penaloza L. Altravesando Fronteras/Border Crossings: a critical ethnographic exploration of the consumer acculturation of Mexican immigrants. J Consum Res 1994;2:32-54[June]) by incorporating the role of a subcultural group in this process.     

Corporate sponsorship as an image platform: understanding the roles of relationship fit and sponsor–sponsee similarity

Studies have shown that the fit between a sponsoring brand and the sport, art, or charity sponsored influences outcomes such as brand awareness and image. This research adds the role of sponsor–sponsee similarity to the discussion of fit. The authors argue that similarity interacts with fit when conditions evoke suspicion or disrupt typical inferences regarding sponsorship relationships. Interaction is particularly important when the sponsor seeks to develop its image by association with a cause, and is also of consequence for the cause in terms of its branding. Three studies test sponsorship effects with respect to blood donation and cancer prevention organizations. Results support the predicted moderated mediation model, showing that similarity between a corporate sponsor and a sponsored cause can interact with fit, influencing sponsorship evaluations directly and shaping attitudes and behavioral intentions toward constituents indirectly. This work reveals a counterintuitive effect of similarity for some sponsorship relationships.