“…Empirical research in various fields has proxied for mafia presence by means of very different strategies, but almost always focusing only on one dimension of the mafia presence. For example, and in regard to only more recent studies, the literature has proxied for mafia presence by using murders or mafia murders (Centorrino & Ofria, 2008;Pinotti, 2015), mafia criminal associations (Barone & Narciso, 2012;Pinotti, 2015;Solivetti, 2016), city councils dissolved for mafia infiltration (Barone & Narciso, 2012;Coniglio, Celi, & Scagliusi, 2010). In a few studies, mafia presence has been measured through a mix of different variables, often selected using statistical methods (Mennella, 2009;Asmundo, 2011;Capuano & Purificato, 2012;Caglayan et al, 2017;Ganau & Rodríguez-Pose, 2017).…”