“…The focus subsequently shifted from symbolic content to the formal elements of art products, such as "line, " "color, " and "movement" as these were considered to be more objective (Gantt, 2001(Gantt, , 2004Thomas and Cody, 2012). The underlying assumption is that formal elements in an art product represent the way clients interact with art materials in order to express themselves and that they are related to clients' mental health (Gantt and Tabone, 1998;Gantt, 2001Gantt, , 2004Hinz, 2009Hinz, , 2015Gilroy et al, 2012;Nan and Hinz, 2012;Pénzes et al, 2014Pénzes et al, , 2015. Several art therapy assessment instruments have been developed to measure these formal elements and relate them to clients' mental health problems (e.g., Cohen, 1986Cohen, /1994Cohen et al, 1986;Hacking, 1999;Elbing and Hacking, 2001;Stuhler-Bauer and Elbing, 2003).…”