Publication records

We present results from two experiments that reveal significant gender differences in ordering behavior in the newsvendor problem. In high margin settings, males tend to order more than females, and they also tend to achieve higher profits. There are no gender differences in low margin settings. We show that the observed gender differences are partially driven by (or mediated by) gender differences in risk appetite. Males tend to prefer taking greater risk than women, and this leads them to order more in the newsvendor problem (in high margin settings). We show that the risk-ordering relationship is related to financial risk attitudes but not to social risk attitudes, and also that the effect is not driven by gender differences in affect, a likely alternative explanation for the results.

With permission of Elsevier

Technology diffusion processes are often said to have critical mass phenomena. We apply a model of demand with installed base effects to provide theoretically grounded empirical insights about critical mass. Our model allows us to rigorously identify and quantify critical mass as a function of installed base and price. Using data from the digital cellular telephony market, which is commonly assumed to have installed base effects, we apply our model and find that installed base effects were generally not strong enough to generate critical mass phenomena, except in the first cellular markets to introduce the technology.

With permission of Elsevier

This paper analyzes the strategic use of bilateral supply contracts in sequential negotiations between one manufacturer and two differentiated retailers. The first main result is that, despite the feasibility of general supply contracts which are functions of own quantity (but cannot be contingent on the rival's quantity), the first contracting parties have incentives to manipulate their contract to shift rent from the second contracting retailer and these incentives distort the industry profit away from the fully-integrated monopoly outcome. The second main result is that if the contract terms between the manufacturer and the first retailer can be renegotiated from scratch in the event that the second retailer has no agreement, then the monopoly outcome can be achieved, often with full rent extraction from the second retailer. Moreover, there are conditions under which renegotiation from scratch yields higher joint profit for the firstly contracting parties than no renegotiation. These results do not depend on the type of retail competition, the level of differentiation between the retailers, the order of sequential negotiations, the level of asymmetry between the retailers in terms of their bargaining power vis-à-vis the manufacturer, or their profitability from being the monopoly retailer.

With permission of Elsevier

Users often interact and help each other solve problems in communities, but few scholars have explored how these relationships provide opportunities to innovate. We analyze the extent to which people positioned within the core of a community as well as people that are cosmopolitans positioned across multiple external communities affect innovation. Using a multimethod approach, including a survey, a complete database of interactions in an online community, content coding of interactions and contributions, and 36 interviews, we specify the types of positions that have the strongest effect on innovation. Our study shows that dispositional explanations for user innovation should be complemented by a relational view that emphasizes how these communities differ from other organizations, the types of behaviors this enables, and the effects on innovation.

© 2012 INFORMS

We study a two-player investment game with information externalities. Necessary and sufficient conditions for a unique symmetric switching equilibrium are provided. When public news indicates that the investment opportunity is very profitable, too many types are investing early and investments should therefore be taxed. Conversely, any positive investment tax is suboptimally high if the public information is sufficiently unfavorable.

With permission of Elsevier

Nursing practice faces the challenges of succeeding with a great diversity of customers and managing a diverse workforce with a wide range of age differences. While age diversity can lead to increased creativity and a greater richness of values and skills, it can also lead to value clashes, disrespect of each other’s viewpoints, and increased conflict. As a result, nurses frequently experience stress, work–life imbalance, and a withdrawal from commitment. We propose the injection of positive diversity mindsets (age diversity appreciation) as one remedy. Specifically,we suggest that age diversity appreciation is positively related to nurses’ well-being (stress and work–life balance), and also positively related to their team commitment.We further hypothesize that nurses’ trust in coworkers mediates the hypothesized relationships. Our survey data of 138 nurses in a large hospital in Germany supported our hypotheses. We discuss both theoretical and managerial implications of our findings in the context of age diversity and nursing work outcomes in hospitals.

© 2012 Blackwell Publishing Asia Pty Ltd