“…Twenty-six studies investigated the association between irritability measured in adulthood and suicidality, suicidal ideation, suicide attempt, and suicide mortality (Ardani et al, 2017;Azorin et al, 2010;Baldessarini et al, 2017;Baldessarini, Vázquez, & Tondo, 2016;Berk et al, 2017;Crook, Raskin, & Davis, 1975;Gagnon, Davidson, Cheifetz, Martineau, & Beauchamp, 2009;Guerreiro et al, 2013;Karam et al, 2015;Lester & Lindsley, 1988;Lester, 1968;Lester & Beck, 1975;Mitsui et al, 2017;Pawlak et al, 2013;Pedrelli et al, 2013;Pendse, Westrin, & Engström, 1999;Perlis et al, 2005;Pompili et al, 2008Pompili et al, , 2016Popovic et al, 2015;Rihmer et al, 2009;Skala et al, 2012;Stålenheim, 2001;Tanabe et al, 2016;Umamaheswari, Avasthi, & Grover, 2014;Westrin, Engstrom, Ekman, & Traskman-Bendz, 1998). With the exception of one longitudinal clinical study (Berk et al, 2017), all studies used a cross-sectional design (Table 4).…”