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标题：Are money and consumption additively separable in the euro area? A non-parametric approach
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作者：Barry E. Jones ; Livio Stracca
期刊名称：Euro Area Balance of Payments and International Investment Position Statistics
印刷版ISSN：1830-3420
电子版ISSN：1830-3439
出版年度：2006
出版社：European Central Bank
摘要：We propose a numerical test of the non-parametric conditions for additive separability between consumption and real money balances, building on Varian (1983). If additive separability is rejected, then real balances enter into the theoretical IS curve. We test whether or not monetary assets and consumption are additively separable for the euro area using quarterly data from 1991 to 2005. Previous results using a parametric approach sug- gest that real balances can be excluded from the IS curve. We nd that additive separability is violated over this sample period. Af- ter 1992, however, violations involve only a few observations and are in some instances related to measurement problems in the data. Overall, our results tend to support the claim that perfect non-separability between consumption and real balances is im- plausible, but that non-separabilities may not be very important empirically. At the same time, we reject additive separability throughout if we extend the sample period back to the 1980s, a period characterised by higher volatility in ination and money growth.
关键词：Non-parametric testing; Revealed Preference;Additive Separability; Money; IS Curve