“…More generally, in research on couples' relationship satisfaction a number of moderating variables have been identified, including age (King & Scott, 2005;Umberson, Williams, Powers, Chen, & Campbell, 2005); education (Karney & Bradbury, 1995); religiosity (Goddard, Marshall, Olson, & Dennis, 2012); parenthood (Adamsons, 2013;Doss, Rhoades, Stanley, & Markman, 2009;Koepke, Hare, & Moran, 1992); relationship status, i.e. whether couples are cohabiting, married or living separately (Karney & Bradbury, 1995;Tam, Lee, Har, & Chua, 2011;Willoughby, Carroll, & Busby, 2011); relationship duration (Heiman et al, 2011;Karney & Bradbury, 1995); sexual satisfaction (Byers, 2005;del Mar S anchez-Fuentes & Sierra, 2015;Henderson, Lehavot, & Simoni, 2009); sexual boredom (Tunariu & Reavey, 2003, 2007; sexual orientation (Kurdek, 2008;Mohr & Fassinger, 2006); sexual desire (Mark & Murray, 2012); and emotional intimacy (Sanderson & Cantor, 2001;Yoo, Bartle-Haring, Day, & Gangamma, 2013).…”