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Marina Leban's PhD thesis looked into the luxury consumption practices of high-end luxury prosumers and lurkers on visual social media platform Instagram through three articles, two of which she already published in high-level academic journals with supervisor Ben Voyer.

Marina Leban successfully defended her thesis in Management Sciences on 8 July, at ESCP Business School’s Paris (République) campus. The jury made up of referees Delphine Dion (ESSEC Business School), Margherita Pagani (EMLyon Business School), suffragans Yuri Seo (University of Auckland) and Luca M. Visconti (Università della Svizzera Italiana) also awarded her work with the "mention pour le prix de thèse” (NB: used for notable work of award-level merit) to encourage her to submit her thesis to best thesis prizes such as the prestigious “prix de thèse de la Chancellerie des Universités de Paris”.

"With the transition to liquid modernity, and the acceleration of society due to the high production and consumption of new content through new media technologies such as social media, social hierarchies seem to be more fragmented, unstable, ephemeral and changing,” explains Marina Leban. “To this end, research still needs to be done to uncover new forms of luxury consumption practices in a digitalized and liquid society, taking place on social media platforms.” To address this gap, her thesis looked at the luxury consumption practices of the specific segment of high-end luxury consumers (prosumers), at how they define, display and consume luxury on the visual social media platform called Instagram. One of her two articles on this topic was published in the Journal of Business Ethics and the other one is under review. The third one takes a different approach by investigating how lurkers, as opposed to prosumers, digitally and virtually consume luxury-related content on Instagram, and was published in the Journal of Business Research: