What makes a good case study? A positivist review of qualitative case research published in Industrial Marketing Management, 1971-2006

Business-to-business marketing research has a long tradition of using qualitative case studies. Industrial Marketing Management (IMM) has actively encouraged the use of case methods, resulting in many important theoretical advances in the field. However, debate still rages over what constitutes “good case research”. This article addresses this issue from a positivist standpoint. We examine the how authors address issues of quality in the 105 qualitative case studies published in IMM between 1971 and 2006. Four periods were identified: 1971-1979, 1980-1989, 1990-1999, and 2000-2006. Findings demonstrate that, from a positivist viewpoint, there has been a steady improvement in how authors addressed issues of research quality in published qualitative case studies. Suggestions for changes in data presentation, reviewer expectations, the IMM reviewer feedback form, and the use of web-based appendices containing data pertinent to reader judgments of research quality are suggested.     

Semiotische und verbandstheoretische Grundzüge einer elementaren Statistik

Zusammenfassung Die Statistik wird als ein formalisiertes Sprachsystem gedeutet und verschiedene Statistikalgorithmen werden über einenBooleschen Verband gebildet. Es werden nur nichtstochastische Probleme behandelt.

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Summary Statistic is considered a formalized language system. Some statistical algorithms are interpreted in aBoolean lattice. Only nonstochastical problems are considered.

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Der erste Teil dieser Abhandlung über eine attributive Statistik alsBoolescher Verband wurde im Heft Nr. 2 (1964) der Metrika als Festbeitrag zum 80. Geburtstag des Jubilars Hofrat Prof. Dr. Dr. h. c.Wilhelm Winkler ver?ffentlicht. Statistische Ma?verb?nde erscheinen über eine quasiadditive Bewertung eingeführt. Im vorliegenden zweiten Teil der Arbeit werden die Beziehungen der Statistik zurβ-Informationstheorie und einer speziellen Semiotik kurz er?rtert und die Algebraisierungs-beziehungsweise Geometrisierungsversuche betreffend die statistischen Forschungsmethoden weitergeführt.     

Disaggregating operating and financial activities: implications for forecasts of profitability

Researchers, practitioners, and standard setters emphasize the importance of disaggregating financial statements into operating and financial activities. However, there is a lack of research demonstrating that this disaggregation improves forecasts of profitability. In this study, we consider whether and when the operating/financial disaggregation improves forecasts of profitability. Contrary to the use of an aggregate forecasting approach by most related prior research, we first show that the operating/financial disaggregation only provides forecast improvement over a benchmark model incorporating aggregate information when the components forecasting approach is used. We also compare the operating/financial disaggregation to the unusual/infrequent disaggregation required by US GAAP. We find that the operating/financial disaggregation yields less accurate forecasts than the unusual/infrequent disaggregation. However, when using the components forecasting approach, we find that the combination of both disaggregations improves forecasts of profitability. Finally, we document that the incremental usefulness of the operating/financial disaggregation relative to a benchmark model incorporating aggregate information is a function of growth and accounting conservatism. Overall, our study provides timely evidence concerning how analysts and investors might best use the operating/financial disaggregation for forecasting profitability.     

Improving retirement adequacy through asset class prioritization

Highly risk-averse retirees are generally advised to adopt a fixed spending strategy such as the 4% withdrawal rule. To prevent the premature depletion of a retirement portfolio, the rule attempts to proxy as the ‘safe withdrawal rate’. But a constant withdrawal rate means that retirees accumulate unspent surpluses when markets outperform and face spending shortfalls when markets underperform. While a safe withdrawal rate can prevent spending shortfalls, the opportunity cost of unspent surpluses associated with this strategy can be extreme. We apply a range of basic investment decision rules to a retirement portfolio applying various withdrawal rates and examine the probability of shortfalls over a retirement horizon. Using a block bootstrap simulation technique, we examine decision rules relating to stock and bond investments. Our results show that retirement portfolios with a bias towards stocks coupled with a decision rule that sources withdrawals from bonds and cash before stocks significantly outperforms alternative withdrawal strategies, despite the inherent increase in volatility. This finding is in direct contrast to the safe withdrawal rate conventions used in contemporary financial advice models.     

The moments of the Gompertz distribution and maximum likelihood estimation of its parameters

The Gompertz distribution is widely used to describe the distribution of adult deaths. Previous works concentrated on formulating approximate relationships to characterise it. However, using the generalised integro-exponential function, exact formulas can be derived for its moment-generating function and central moments. Based on the exact central moments, higher accuracy approximations can be defined for them. In demographic or actuarial applications, maximum likelihood estimation is often used to determine the parameters of the Gompertz distribution. By solving the maximum likelihood estimates analytically, the dimension of the optimisation problem can be reduced to one both in the case of discrete and continuous data. Monte Carlo experiments show that by ML estimation, higher accuracy estimates can be acquired than by the method of moments.     

Assessing self-selection and endogeneity issues in the relation between activity-based costing and performance

Studies investigating the relation between ABC adoption and performance are inconclusive and plagued with econometric problems. This study extends prior research to investigate the association between ABC adoption and four manufacturing plant performance measures (cycle-time improvement, quality improvement, cost improvement, and profitability) and to assess selection bias and the endogenous nature of their relationship. I use the Heckman (1979) model to assess sample selection bias and the Wooldridge (2002) 2SLS-IV approach, to investigate endogeneity. After controlling for sample selection bias and endogeneity, the coefficient of ABC under the Heckman method and ABC_fit under the 2SLS-IV method becomes significantly higher compared to the coefficient of ABC under the OLS method. In addition, both the inverse Mills ratio, under the Heckman model, and Hausman F-test, under the Wooldridge 2SLS approach, are positive and significant, confirming the presence of both sample selection bias and endogeneity. Overall, I find that controlling for sample selection bias and endogeneity is essential in properly assessing the significance of ABC-performance association.     

Institutions and Strategies: Trends and Obstacles to Recruiting Workers into Trade Unions in Poland

In this article, we examine the role of institutional context, organizational structures and trade union strategies in tempering membership decline in the number of trade unions in Poland. Empirical data include membership statistics collected for NSZZ Solidarno?? and 54 affiliates of two other largest trade union confederations (OPZZ and FZZ) supplemented by semi‐structured interviews with union leaders. In a decentralized collective bargaining system in Poland, a centralized trade union confederation (NSZZ Solidarno??) can more easily shift resources to efficiently organize workers than decentralized confederations, OPZZ and FZZ, whose development is mostly driven by competing trade unions representing narrower occupational groups. In conclusion, this observation is put in a broader context of the debates about trade union renewal in Eastern Europe.     

Product pricing and solvency capital requirements for long-term care insurance

This paper presents a comprehensive assessment of premiums, reserves and solvency capital requirements (SCRs) for long-term care (LTC) insurance policies using Activities of Daily Living and US data. We compare stand-alone policies, whole life insurance policies with LTC benefit riders (LTC insurance combined with whole life insurance), life care annuities (LTC insurance combined with annuities) and shared LTC insurance in terms of net premium cost and SCRs. Net premiums and best-estimate reserves for base LTC insurance policies are determined using Thiele’s differential equation. Product features such as the elimination period and the maximum benefit period are compared using a simulation-based model. We show how a maximum benefit period can reduce costs and risks for LTC insurance products. SCRs for longevity risk and disability risk are based on the Solvency II standard formula. We quantify the extent to which whole life insurance policies with LTC benefit riders and life care annuities provide lower SCRs than stand-alone LTC insurance policies.     

Enhancing television advertising: same-language subtitles can improve brand recall,verbal memory,and behavioral intent

This research explores how same-language subtitles—on-screen text that matches the spoken language—can enhance advertising effectiveness for television commercials on normal viewing audiences outside of foreign-language or deaf-viewer contexts. A preliminary eye-tracker study shows that same-language subtitles capture disproportionate visual attention, and a first study highlights that same-language commercial subtitles can increase brand recall and memory of other verbal ad information. Three further studies using 12 additional ads reinforce the positive effects of subtitles and show how same-language subtitle effectiveness varies with changes in visual and verbal ad complexity. In addition to showing how subtitles can increase behavioral intent, results also highlight how varying subtitle content affects memory gains and illustrate how subtitles can lead to negative effects in the uncommon situation that brand information is missing from the audio. As the efficacy of television advertising becomes increasingly debated, same-language subtitling is a simple way to boost advertising effectiveness.     

Laying the foundations of international careers research

As an editorial to the special issue “new avenues in international careers research” this article discusses the roots of the international careers research stream, which sits at the intersection between career studies, HRM and international management. In order to support future studies in this emerging area of enquiry, we attempt to lay down the foundations of a research agenda based around what we see as the three core areas of interest: contextualised careers research, comparative careers research and careers research in internationally operating organisations. After providing some suggestions for the kinds of theoretical and methodological tools that will be required to build on these foundations, we introduce the five empirical papers that comprise this special issue.