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Towards A More General Approach To Testing The Time Additivity Hypothesis

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  • Gary Wong
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    Abstract

    A new procedure is proposed for re-examining the assumption of additivity of preferences over time which, although untenable, is usually maintained in intertemporal analyses of consumption and labour supply. The method is an extension of a famous work by Browning (1991). However, it is more general in permitting the estimation of Frisch demands, which are explicit in an unobservable variable (price of utility), but may lack a closed form representation in terms of observable variables such as prices and total outlay. It also makes an extensive use of duality theory to solve the endogeneity problem encountered in Browning\'s study. Applying this method with an appropriate estimator to the Australian disaggregate data, we find that the intertemporal additivity hypothesis is decisively rejected, which is consistent with Browning\'s conclusion. Results also indicate that the effects of lagged and future prices in determining current consumption decisions are insubstantial.

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    Bibliographic Info

    Paper provided by School of Economics and Finance, Queensland University of Technology in its series School of Economics and Finance Discussion Papers and Working Papers Series with number 098.

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    Date of creation: 20 Sep 2001
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    Handle: RePEc:qut:dpaper:098

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    Keywords: Frisch Demands; The SNAP Structure; Intertemporal Additivity Hypothesis;

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    1. Browning, Martin, 1997. "Interpreting the results of empirical analyses of intertemporal allocation: An identification problem," Economics Letters, Elsevier, vol. 56(1), pages 41-44, September.
    2. Deaton, Angus S & Muellbauer, John, 1980. "An Almost Ideal Demand System," American Economic Review, American Economic Association, vol. 70(3), pages 312-26, June.
    3. Russel J. Cooper & Keith R. McLaren, 1992. "An Empirically Oriented Demand System with Improved Regularity Properties," Canadian Journal of Economics, Canadian Economics Association, vol. 25(3), pages 652-68, August.
    4. Cooper, Russel J., 1994. "On the exploitation of additional duality relationships in consumer demand analysis," Economics Letters, Elsevier, vol. 44(1-2), pages 73-77.
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    7. Browning, Martin, 1991. "A Simple Nonadditive Preference Structure for Models of Household Behavior over Time," Journal of Political Economy, University of Chicago Press, vol. 99(3), pages 607-37, June.
    8. Kim, H Youn, 1993. "Frisch Demand Functions and Intertemporal Substitution in Consumption," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 25(3), pages 445-54, August.
    9. Pollak, Robert A & Wales, Terrence J, 1969. "Estimation of the Linear Expenditure System," Econometrica, Econometric Society, vol. 37(4), pages 611-28, October.
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    11. Pashardes, Panos, 1986. "Myopic and Forward Looking Behavior in a Dynamic Demand System," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 27(2), pages 387-97, June.
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    13. Dunn, Kenneth B. & Singleton, Kenneth J., 1986. "Modeling the term structure of interest rates under non-separable utility and durability of goods," Journal of Financial Economics, Elsevier, vol. 17(1), pages 27-55, September.
    14. Martin J. Browning, 1989. "The Intertemporal Allocation of Expenditure on Non-durables, Services, and Durables," Canadian Journal of Economics, Canadian Economics Association, vol. 22(1), pages 22-36, February.
    15. Selvanathan, Saroja, 1991. "The Reliability of ML Estimators of Systems of Demand Equations: Evidence from OECD Countries," The Review of Economics and Statistics, MIT Press, vol. 73(2), pages 346-53, May.
    16. Cooper, Russel J & McLaren, Keith R, 1980. "Atemporal, Temporal and Intertemporal Duality in Consumer Theory," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 21(3), pages 599-609, October.
    17. Deaton, Angus, 1986. "Demand analysis," Handbook of Econometrics, in: Z. Griliches† & M. D. Intriligator (ed.), Handbook of Econometrics, edition 1, volume 3, chapter 30, pages 1767-1839 Elsevier.
    18. Charles M. Beach & James G. MacKinnon, 1977. "Maximum Likelihood Estimation of Singular Equation Systems with Autoregressive Disturbances," Working Papers 276, Queen's University, Department of Economics.
    19. Bover, Olympia, 1991. "Relaxing Intertemporal Separability: A Rational Habits Model of Labor Supply Estimated from Panel Data," Journal of Labor Economics, University of Chicago Press, vol. 9(1), pages 85-100, January.
    20. Cooper, Russel J & McLaren, Keith R, 1993. "Approaches to the Solution of Intertemporal Consumer Demand Models," Australian Economic Papers, Wiley Blackwell, vol. 32(60), pages 20-39, June.
    21. Pollak, Robert A, 1970. "Habit Formation and Dynamic Demand Functions," Journal of Political Economy, University of Chicago Press, vol. 78(4), pages 745-63, Part I Ju.
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