“…In the preference judgment task, participants are required to make a decision based on personal criteria; the judgment is not based on external criteria. Preference judgments of many kinds have been used in previous studies: preference judgment for food (Arana et al, 2003; Paulus and Frank, 2003; Hare et al, 2009; Piech et al, 2009; Linder et al, 2010), products (Knutson et al, 2007, 2008), brands (Santos et al, 2011), faces (Kim et al, 2007; Chen et al, 2010), holiday options (Chaudhry et al, 2009), paintings (Jarcho et al, 2011), political beliefs (Zamboni et al, 2009), occupations (Nakao et al, 2009a, 2010c), task types (Forstmann et al, 2006), agencies of choice (Forstmann et al, 2008), shapes (Jacobsen et al, 2006), and colors (Goldberg and Podell, 1999, 2000; Johnson et al, 2005). …”