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Demographic vs Expenditure Flexibility in Engel Curves

Author

Listed:
  • Panayiota Lyssiotou

    (University of Cyprus, Cyprus)

  • Panos Pashardes

    (University of Cyprus, Cyprus)

  • Thanasis Stengos

    (University of Guelph, Canada and The Rimini Centre for Economics Analysis, Rimini, Italy)

Abstract

We consider the effects of demographic and expenditure variables on consumer demand in a system of Engel curves using a smooth coefficient semiparametric model where the expenditure effects on the budget shares vary nonparametrically with demographic variables such as the age of head and number of children in the household. Our findings, based on UK micro data, suggest that with a smooth coefficient semiparametric model there is no need for nonlinear logarithmic expenditure effects in the budget shares. Furthermore, we find evidence of a trade-off between demographic and expenditure effects in Engel curves and that a rank-2 system of Engel curves where the logarithmic expenditure effects are allowed to vary with demographic characteristics either nonparametrically or as a third degree polynomial function cannot be rejected against a rank-3 (quadratic logarithmic) model. The implications on household behaviour and welfare are also examined.

Suggested Citation

  • Panayiota Lyssiotou & Panos Pashardes & Thanasis Stengos, 2007. "Demographic vs Expenditure Flexibility in Engel Curves," Working Paper series 22_07, Rimini Centre for Economic Analysis.
    • Handle: RePEc:rim:rimwps:22_07
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    References listed on IDEAS

    as
    1. Hausman, J. A. & Newey, W. K. & Powell, J. L., 1995. "Nonlinear errors in variables Estimation of some Engel curves," Journal of Econometrics, Elsevier, vol. 65(1), pages 205-233, January.
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    3. Li, Q. & Wang, Suojin, 1998. "A simple consistent bootstrap test for a parametric regression function," Journal of Econometrics, Elsevier, vol. 87(1), pages 145-165, August.
    4. Stephen G. Donald, 1997. "Inference Concerning the Number of Factors in a Multivariate Nonparametric Relationship," Econometrica, Econometric Society, vol. 65(1), pages 103-132, January.
    5. James Banks & Richard Blundell & Arthur Lewbel, 1997. "Quadratic Engel Curves And Consumer Demand," The Review of Economics and Statistics, MIT Press, vol. 79(4), pages 527-539, November.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    Preference Heterogeneity; Rank Test; Demand Systems;
    All these keywords.

    JEL classification:

    • D1 - Microeconomics - - Household Behavior

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