... & Step, 2011;Stubenrauch et al., 2012;Teresi et al., 2005;Violato et al., 2006;Zabar et al., 2010). Other types included medical students (n=21 studies; n=10,333 ;Dong et al., 2015;Ellman et al., 2016;Gallagher et al., 2001; Huang et al., 2010;Humphris & Kaney, 2001;Huntley et al., 2012;Joekes et al., 2011;Karnieli-Miller et al., 2018;Kim et al., 2009;Kirk et al., 2013;LeBlanc et al., 2009;Makoul, 2001; Mortsiefer et al., 2014;Simmenroth-Nayda et al., 2014;Strayer et al., 2011; Suojanen et al., 2018;Zaidi et al., 2012) and medical residents (n=14 studies; n=623 ;Assis-Hassid et al., 2013;Caron et al., 2013;Childers et al., 2012;Huntley et al., 2012;Joshi et al., 2004;Suzuki Laidlaw et al., 2006;Szmuilowicz et al., 2010;Valverde Bolivar et al., 2018;Wouda & van de Wiel, 2013;Wroe et al., 2017).2.4.4 Tool CharacteristicsOnly 51% (n=23) of the tools mentioned the use of theories or models underlying the conceptualization and design of the toolAssis-Hassid et al., 2015;Burt et al., 2014;Burt et al., 2018;Bylund & Makoul, 2002;Chesser et al., 2013;Childers et al., 2012;Ellman et al., 2016;Gallagher et al., 2001; Guimond et al., 2003;Gustin et al., 2016;Karnieli-Miller et al., 2018;Kim et al., 2009;Kirk et al., 2013;Menear et al., 2018;Siminoff & Step, 2011;Strayer et al., 2011;Stubenrauch et al., 2012;Teresi et al., 2005;Zabar et al., 2010;Zaidi et al., 2012). Twenty different theories ...