“…Given the importance of caregivers for the lives of individuals with severe mental disorders, the quality of life of these individuals is, perhaps not surprisingly, strongly associated with the quality of relationship with their healthy siblings (Sin, Jordan, Barley, Henderson, & Norman, 2015;, caregiver involvement, and future care expectations (Greenberg et al, 1999;Hatfield & Lefley, 2005;Horwitz et al, 1992;. The impact of assuming the role of primary caregivers has shown that it brings about high levels of psychological stress (Richieri et al, 2011;Sin et al, 2016;Stalberg et al, 2004) as well as negatively impacting the caregiver's quality of life (Caqueo-Urìzar et al, 2009;Martens & Addington, 2001;Sin et al, 2015). It has also been associated with an increase in chronic diseases, psychosomatic symptoms, anxiety and depression (Arajärvi et al, 2006;Argyropoulos et al, 2008;Awad & Voruganti, 2008;Friedrich et al, 1999;Glozman, 2004;Reiss, Neiderhiser, Hetherington, & Plomin, 2000;Reiss & Olivieri, 1991;Sin et al, 2016).…”