“…Furthermore, while happiness studies have recently been used to estimate the value of public goods and bads, including price inflation (Di Tella et al, 2001), state cigarette taxes (Gruber and Mullainathan, 2005), airport noise (van Praag and Baarsma, 2005), inequality (Alesina et al, 2004), terrorism (Frey et al, 2009), and even air pollution (Welsch, 2007;Ferreira et al, 2006;Luechinger, 2009), all of this previous work relies on annual average values of these public goods across regions or countries. If the public goods are endogenously determined by regional characteristics also associated with happiness, or if people become habituated to levels of public goods, these studies using annual regional differences in public goods will yield biased estimates of willingness to pay.…”