Delphine Dion is Full Professor at ESSEC Business School. Her current research projects explore market dynamics and marketing practices. Her research has been published in numerous books and leading academic journals, including the Journal of Marketing, Journal of Consumer Research, Journal of the Academy of Marketing Science, Journal of Business Ethics, Journal of Retailing, Journal of Marketing Management, Journal of Business Research, among others. She has received several awards for my scientific activities, including the 2018 ESSEC Foundation Research Award and the 2026 PhD Excellence Award.

She is Area Editor of the International Journal of Research in Marketing and of the Journal of Retailing. She serves on the Editorial Review Board of the Journal of Business Research. She has received the 2026 Outstanding AE Award of the International Journal of Research in Marketing.

Lutz Sager is Assistant Professor in the Economics Department of ESSEC. He is an environmental economist who studies the costs of and solutions to climate change and air pollution. His work highlights distributional considerations, looking for policy instruments that are both effective and equitable. Before joining ESSEC, Dr. Sager was Assistant Professor at Georgetown University. He is also a Visiting Fellow at the London School of Economics and a Research Fellow of the CESifo Network. His work has been published in leading academic journals, featured in media outlet worldwide (e.g. Washington Post, Wall Street Journal, Financial Times), as well as referenced by governments and international organizations.