nonseparable preferences
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2016 ◽  
Vol 21 (1) ◽  
pp. 259-277 ◽  
Author(s):  
Nicolas Abad ◽  
Thomas Seegmuller ◽  
Alain Venditti

We investigate the role of nonseparable preferences in the occurrence of macroeconomic instability under a balanced-budget rule where government spending is financed by a tax on labor income. Considering a one-sector neoclassical growth model with a large class of nonseparable utility functions, we find that expectations-driven fluctuations occur easily when consumption and labor are Edgeworth substitutes or weak Edgeworth complements. Under these assumptions, an intermediate range of tax rates and a sufficiently low elasticity of intertemporal substitution in consumption lead to instability.


2013 ◽  
Vol 18 (2) ◽  
pp. 316-337 ◽  
Author(s):  
Stefan F. Schubert

We study the dynamic effects of an oil price shock on key economic variables and on the current account of a small open economy. We introduce time-nonseparable preferences into a standard model of a small open economy, where imported oil is used both as an intermediate input in production and as a consumption good. Using a plausible calibration of the model, we show that the changes in output and employment are quite small, and that the current account exhibits the J-curve property, both being in line with recent empirical evidence. After an oil price increase, employment falls and the current account first deteriorates. Over time, with gradually falling expenditures, the trade balance improves sufficiently to turn the current account into a surplus. The model thus provides a plausible explanation of recent empirical findings.


2011 ◽  
Vol 15 (S2) ◽  
pp. 252-268 ◽  
Author(s):  
Mei Dong

Rocheteau, Rupert, and Wright [Scandinavian Journal of Economics 109 (2007), 837–855] show that the relationship between inflation and unemployment can be positive or negative, depending on the primitives of the model. The key features are indivisible labor, nonseparable preferences, and bargaining. Their results are derived only for a special case of bargaining, take-it-or-leave-it offer by buyers. Instead of bargaining, this paper considers competitive search. I show that the results of Rocheteau et al. can be generalized to an environment where both buyers and sellers have nonseparable preferences. In addition, the relationship between inflation and unemployment is robust to allowing free entry by sellers, which cannot be studied in Rocheteau et al. (2007).


2010 ◽  
Vol 145 (6) ◽  
pp. 2055-2077 ◽  
Author(s):  
Borys Grochulski ◽  
Narayana Kocherlakota

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