“…Severe Traumatic brain injury inherently involves the experience of a life-threatening trauma, which may be accompanied by a posttraumatic reaction among patients as well as close relatives (e.g., Campbell et al, 2009;Combs et al, 2015). More than 50% of relatives suffer from clinically relevant Posttraumatic stress (PTS) symptoms (Bosma et al, 2018;Pielmaier, Milek, Nussbeck, Walder, & Maercker, 2013) and research on secondary traumatization reveals the "contagious" effects of PTSD for close relatives (e.g., Ben Arzi, Solomon, & Dekel, 2000). That is, living with a person who suffers from PTSD may have a spillover effect on close relatives' PTS symptoms (e.g., Levin, Bachem, & Solomon, 2017;Levin, Greene, & Solomon, 2016).…”