“…The most common methods use mathematical functions to assist decision-makers in constructing their preferences. These functions include multi-attribute value theory (MAVT) (Pictet and Bollinger, 2008;Simpson, 1996), multi-attribute utility theory (MAUT) (Gass, 2005;Khandelwal et al , 2006) and analytical hierarchy process (AHP) (Gass, 2005;Rohacova and Markova, 2009). MAVT and MAUT are diffi cult to use because the utility elicitation process is time-consuming and complex.…”