“…The survey design ranges from simple questions like "would you prefer more or less spending on defense?" (Maital, 1979;Alud, 1980;Ferris, 1983;Lewis and Jackson, 1985) to more sophisticated budget games, in which expenditure levels can be varied simultaneously with different constraints (Hockley and Harbour, 1983;Seldon, 1979, 1987;De Groot and Pommer, 1987). In addition, surveys have been used for direct measurement of individual willingness to pay for particular goods (Cumings et al, 1986;Papandrea, 1999;Fleischer and Felsenstein, 2002;Wertenbroch and Skiera, 2002, among others).…”