Stijn van Osselaer (1971, Ph.D. (Marketing), University of Florida 1998) is Professor of Marketing specializing in Consumer Behavior at the Rotterdam School of Management/Faculteit Bedrijfskunde of Erasmus University in Rotterdam. His research focuses on the study of basic psychological...

Recently, retailers have begun considering which brands they can delist without reducing customer satisfaction, losing category sales, or increasing store switching behavior. Although several studies have considered assortment reductions, none has explicitly investigated the impact of total...

De nombreuses enseignes communiquent sur leurs engagements sociétaux afin d’améliorer leur image auprès des consommateurs. Néanmoins, face à la profusion d’arguments plus ou moins fondés, l’efficacité de la communication sociétale peut être questionnée. Mobilisant la théorie de...

Différents travaux sur la Responsabilité Sociale des Entreprises (RSE) montrent que les consommateurs perçoivent plus favorablement les entreprises agissant de manière responsable, mais n'étudient pas spécifiquement les effets de la communication sociétale et de ses caractéristiques sur...

De nombreuses entreprises du secteur de la distribution communiquent sur leursengagements sociétaux afin d’améliorer leur image auprès des consommateurs. Néanmoins,face à la profusion d’arguments plus ou moins fondés, l’efficacité de la communicationsociétale des enseignes est...

This research provides a new way to validate and compare buy-till-you-defect [BTYD] models. These models specify a customer’s transaction and defection processes in a non-contractual setting. They are typically used to identify active customers in a com- pany’s customer base and to predict...

We introduce an international, adaptive diffusion model that can be used to forecast the cross-national diffusion of an innovation at early stages of the diffusion curve. We model the mutual influence between the diffusion processes in the different social systems (countries) by mixing...

Growth curve data consist of repeated measurements of a continuous growth process over time in a population of individuals. These data are classically analyzed by nonlinear mixed models. However, the standard growth functions used in this context prescribe monotone increasing growth and can fail...

Our aim is to analyze the link between optimism and risk aversion in a subjective expected utility setting and to estimate the average level of optimism when weighted by risk tolerance. Its estimation leads to a non-trivial statistical problem. We start from a large lottery survey (1536...

Buy-till-you-defect [BTYD] models are built for companies operating in a non- contractual setting to predict customers’ transaction frequency, amount and timing as well as customer lifetime. These models tend to perform well, although they often predict unrealistically long lifetimes for a...