“…According to a literature review of familicides (Karlsson et al, 2019), perpetrator age may be between 35 (Wilson & Daly, 1997) and 43 years (Wilson, Daly, & Daniele, 1995); between 31% (Hamilton, Jaffe, & Campbell, 2013) and 41% (Liem & Koenraadt, 2008) of perpetrators are unemployed; and between 13% (Logan, Walsh, Patel, & Hall, 2013) and 45% (Friedman, Hrouda, Holden, Noffsinger, & Resnick, 2005) have a history of psychiatric treatment. Firearms were used in about a quarter of the small number of cases in Wales (Wilson Daly, & Daniele, 1995), but in nearly three-quarter of the cases in the United States (Liem, Levin, Holland, & Fox, 2013).…”