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A Non-nested Test of Separability for Flexible Functional Forms


  • Moschini, Giancarlo


This paper develops a separable functional form in which all the relevant aggregator functions are the desired degree of approximation. This leads to separable structures that are more flexible than those implied by parametric restrictions of flexible functional forms. Tests of separability can then be accomplished in a nonnested framework. This approach is illustrated with an application to input-output separability for a multiproduct translog cost function using a robust likelihood ratio testing procedure. Copyright 1992 by MIT Press.

Suggested Citation

  • Moschini, Giancarlo, 1992. "A Non-nested Test of Separability for Flexible Functional Forms," The Review of Economics and Statistics, MIT Press, vol. 74(2), pages 365-369, May.
  • Handle: RePEc:tpr:restat:v:74:y:1992:i:2:p:365-69

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    References listed on IDEAS

    1. Michael Rothschild, 1971. "On the Cost of Adjustment," The Quarterly Journal of Economics, Oxford University Press, vol. 85(4), pages 605-622.
    2. Hamermesh, Daniel S., 1990. "Aggregate employment dynamics and lumpy adjustment costs," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 33(1), pages 93-129, January.
    3. Robert F. Engle & Ta-Chung Liu, 1972. "Effects of Aggregation Over Time on Dynamic Characteristics of an Econometric Model," NBER Chapters,in: Econometric Models of Cyclical Behavior, Volumes 1 and 2, pages 673-737 National Bureau of Economic Research, Inc.
    4. Card, David, 1986. "Efficient Contracts with Costly Adjustment: Short-run Employment Determination for Airline Mechanics," American Economic Review, American Economic Association, vol. 76(5), pages 1045-1071, December.
    5. P. K. Trivedi, 1985. "Distributed Lags, Aggregation and Compounding: Some Econometric Implications," Review of Economic Studies, Oxford University Press, vol. 52(1), pages 19-35.
    6. Russell Davidson & Richard Harris, 1981. "Non-Convexities in Continuous Time Investment Theory," Review of Economic Studies, Oxford University Press, vol. 48(2), pages 235-253.
    7. Stephen Nickell, 1984. "An Investigation of the Determinants of Manufacturing Employment in the United Kingdom," Review of Economic Studies, Oxford University Press, vol. 51(4), pages 529-557.
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    Cited by:

    1. GianCarlo Moschini, 2000. "Flexible Multistage Demand System Based on Indirect Separability, A," Center for Agricultural and Rural Development (CARD) Publications 00-wp265, Center for Agricultural and Rural Development (CARD) at Iowa State University.
    2. Rosario Crino, 2006. "Are U.S. White-Collar Really at Risk of Service Offshoring?," KITeS Working Papers 183, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Oct 2006.

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