“…In fact, we scrutinised the changing determinants of a selected pool of sexual behaviour which past research has already shown to be crucial and, according to our data, changed more significantly over time than others. These are the number of males watching pornography (Goodson et al, 2001;Braitwaite et al, 2015;for Italy, Romito and Beltramini, 2011;Cuccì et al, 2017;Scarcelli and Stella, 2019), the number of females who have had homosexual experiences (Goode and Haber, 1977;Kuperberg and Walker, 2018), the number of males betraying their partner (Allen and Baucom, 2006;McAnulty and Brineman, 2007;Norona et al, 2015), and having three or more sexual partners for females (Wiederman, 1997;Brown and Sinclair, 1999;Eisenberg, 2001;Zelin et al, 2015;Mitchell et al, 2019). As each of these behaviour has its own specificity, it is not possible to discuss in-depth every main determinant of these four sexual behaviours in a single study.…”