Abandoning internal and external validity: A response to Swanborn

This is a reply to Peter Swanborn's comments on my paper A note on Campbell's distinction between internal and external validity. I argue that Swanborn misconstrues my argument, interpreting it as recommending the abandonment of the concept of external validity, whereas it actually proposed abolition of thedistinction between internal and external validity. I also explain that my argument did not involve a denial of the importance of the various issues included under these headings by Campbell, merely a proposed reconceptualisation of them.     

Birth,death and public good provision

We explore the effect of fixed versus dynamic group membership on public good provision. In a novel experimental design, we modify the traditional voluntary contribution mechanism (VCM) by periodically replacing old members of a group with new members over time. Under this dynamic, overlapping generations matching protocol we find that average contributions experience significantly less decay over time relative to a traditional VCM environment with fixed group membership and a common termination date. These findings suggest that the traditional pattern of contribution and decay seen in many public goods experiments may not accurately reflect behavior in groups with changing membership, as is the case in many real-world environments.     

Education Dashboards for Enhanced Learning: A Singapore Experience

Educators continue to utilize add-ons, extensions, or replacements to traditional Learning Management Systems (LMSs) to supplement capabilities and improve the classroom experience. This work resulted in the design and development of the Education Dashboards for Enhanced Learning (EDEL) template. The EDEL template enables faculty members to create dynamic web spaces called Knowledge Portals (KPortals). A semester-long introduction of KPortals proved to be positive and useful. Students tended to view the KPortal as a “go-to” webspace. The authors hope to refine the template in future studies and examine its usefulness in other countries.     

Competitive behavior in market games: Evidence and theory

We explore whether competitive outcomes arise in an experimental implementation of a market game, introduced by Shubik (1973) [21]. Market games obtain Pareto inferior (strict) Nash equilibria, in which some or possibly all markets are closed. We find that subjects do not coordinate on autarkic Nash equilibria, but favor more efficient Nash equilibria in which all markets are open. As the number of subjects participating in the market game increases, the Nash equilibrium they achieve approximates the associated competitive equilibrium of the underlying economy. Motivated by these findings, we provide a theoretical argument for why evolutionary forces can lead to competitive outcomes in market games.     

Social norms, information, and trust among strangers: theory and evidence

Can a social norm of trust and reciprocity emerge among strangers? We investigate this question by examining behavior in an experiment where subjects repeatedly play a two-player binary “trust” game. Players are randomly and anonymously paired with one another in each period. The main questions addressed are whether a social norm of trust and reciprocity emerges under the most extreme information restriction (anonymous community-wide enforcement) or whether trust and reciprocity require additional, individual-specific information about a player’s past history of play and whether that information must be provided freely or at some cost. In the absence of such reputational information, we find that a social norm of trust and reciprocity is difficult to sustain. The provision of reputational information on past individual decisions significantly increases trust and reciprocity, with longer histories yielding the best outcomes. Importantly, we find that making reputational information available at a small cost may also lead to a significant improvement in trust and reciprocity, despite the fact that most subjects do not choose to purchase this information.     

Contingency Factors in the Effects of Rater Training on Interrater Agreement: Some Lint in the Bellybutton of Past Research

Researchers, examining the need to train performance appraisal raters, have typically used a complex rating task with several dimensions. However, results of a recent training survey (Mealiea and Duffy, 1986) showed that a number of Canadian organizations use a simple one-item, global rating of employee performance, and they are satisfied with their rating process. The present study looks at the influence of the rating task and the type of measurement on the relationship between rater training and rater effectiveness. Subjects were 105 (approximately 50 per cent female and 50 per cent male) patrons of a tavern in upstate New York who served as contestants in a contest of belly button beauty. Four judges, randomly selected from the audience, served over a three week period. Interrater reliability was assessed using a version of the intraclass correlation coefficient, and the Spearman Brown formula was used to estimate the mean reliability of the four judges. The results indicated an absence of leniency and central tendency bias and high interrater reliability without benefit of training. During the three weeks of the study, the average interrater reliabilities were .85, .99, and .99, respectively. The results, as hypothesized, extend the rater training and measurement literature and can be most parsimoniously explained by adding a contingency factor of task/scale characteristics to the rater training effectiveness theory. Résumé Les chercheurs qui ont examiné le besoin de formation pour les évaluateurs de performance ont toujurs utilisé une tǎche d'évaluation complexe au cours de laquelle plusieurs dimensions étaient évaluées. Cependfant les résultats d'un sondage récent (Mealiea et Duffy, 1986) ont démontré qu'un grand nombre d'entreprises canadiennes utilisent un système global à composante unique pour l'évaluation de la performance et sont satisfaits de cette méthode. La présente étude évalue l'influence de la tǎche d'évaluation et le type de mesure sur la relation entre la formation de l'évaluation et son efficacité. Les sujets de cette étude étaient formés de 105 clients (moitié hommes et moitié femmes approximativement) d'un bar de l'état de New York qui participaient à un concours de beauté ombilicale. Quatre juges choisis au hazard dans la salle ont servi pendant une période de trois semaines. La fiabilité a été évaluée à l'aide d'une version du coefficient de correlation interclasse et la formule Spearman Brown a été utilisée pour estimer la fiabilité moyenne des quatre juges. Les résultats ont démontré l'absence de laxisme et de préjugé à tendance centrale et une fiabilité relative élevées des évaluateurs. Pendant les trois semaines de l'étude, les moyennes de fiabilité étaient de .85, .99, et .99 respectivement. Les résultats, tel que prévu confirment les ouvrages concernant la formation et l'évaluation des évaluateurs et peut ětre expliquée avec grand parcimonie en ajoutant un facteur de contingentement de caractéristiques tǎche/ échelle a la théorie d'efficacité de formation de l'évaluateur.     

A Five-Year Review, Update, and Assessment of Ethics and Governance in Strategic Management Journal

Although business ethics has a long history as a core theme within the realm of strategic management it has not received considerable attention in top strategy journals until recently. In this paper, we assess the state of business ethics research published over a 5-year period (2006–2010) in Strategic Management Journal to ascertain whether there has been an increase in business ethics research published in the top strategy outlet. The results of our content analysis reveal that ethics research in SMJ is indeed on the rise yet this research stream is still underrepresented with only 5.8 % of all articles published over the five-year period having an ethics theme. Moreover, the link between Corporate Social Performance and Financial Performance was identified as the top theme during the review period.     

A comparative study of the contents of personnel and human resource management textbooks

The paper reports the results of a contents analysis performed on fifty personnel and HRM texts. It suggests that there is a common set of person-nel/HRM tasks across cultures. Within this common set there are differences in the priority accorded to particular tasks. British HRM texts give priority to organizational theory, American HRM texts prioritize corporate strategy, while personnel texts prioritize industrial relations and collective bargaining. The conclusion considers as possible explanations the divergence in the systems of industrial relations of the two countries and the markets towards which the texts are oriented. It argues that a more likely explanation derives from the differential cultural values which inform managerial research in Britain and America.     

Advertising in demand systems: testing a Galbraithian hypothesis

In this paper we argue that the influence of advertising upon the inter-product distribution of demand is a system-wide phenomenon which is investigated better through a demand equation system rather than through single equation methods. Attention is focused upon a dynamic version of Deaton Muellbauer's AIDS model modified to include advertising terms. Within this framework using data on consumer's non-durable expenditure in the UK we carry out a preliminary test of Galbraith' hypothesis that advertising may affect the composition of aggregate consumer demand.