“…10 Previous studies using survey data have shown that respondent characteristics do significantly affect the attainable setor at least the perceived attainable set(Cordero, Salinas-Jiménez, & Salinas-Jiménez, 2017;Verschelde & Rogge, 2012). In addition, other environmental variables can be related to the frontier, such as the location of the evaluated unit(Fusco, Vidoli, & Sahoo, 2017) and its political environment(Kristof De Witte & Geys, 2013). In order to circumvent the restrictive separability condition, we choose to develop our model building on the work of…”