At the time of collaboration, Sandrine Haymoz was Professor at the University of Applied Sciences and Arts Western Switzerland in Fribourg since 2013. She holds a Master of Psychology from the Faculty of Social and Political Sciences of the University of Lausanne, a Master of Advanced Studies in Criminology, and a Ph.D in Criminology from the Faculty of Law, Criminal Sciences and Public Administration of the University of Lausanne. She received the Faculty’s Prize for her Ph.D. dissertation on youth gangs. While completing her dissertation, she worked as a researcher at the Universities of Lausanne and Zurich. After obtaining her Ph.D., she took part in the harmonization of Swiss police statistics at the federal level.