作者：Neary, JP
作者单位：University College Dublin; Centre for Economic Policy Research - UK
摘要：Real incomes are routinely compared internationally using methods that correct for deviations from purchasing power parity. The most widely used of these is the Geary method which, though theoretically suspect, underlies the Penn World Table. This paper provides a theoretical foundation for the Geary method which I call the GAIA (Geary-Allen International Accounts) system. I show that the Geary method is exact when preferences are non-homothetic Leontief and, more generally, gives a (possibly ...
作者：Bernheim, BD; Rangel, A
作者单位：Stanford University; National Bureau of Economic Research
摘要：We propose a model of addiction based on three premises: (i) use among addicts is frequently a mistake; (ii) experience sensitizes an individual to environmental cues that trigger mistaken usage; (iii) addicts understand and manage their susceptibilities. We argue that these premises find support in evidence from psychology, neuroscience, and clinical practice. The model is tractable and generates a plausible mapping between behavior and the characteristics of the user, substance, and environm...
