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Instrumental Variables Estimation of Heteroskedastic Linear Models Using All Lags of Instruments

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Author Info
Kenneth D. West
Ka-fu Wong
Stanislav Anatolyev

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Abstract

We propose and evaluate a technique for instrumental variables estimation of linear models with conditional heteroskedasticity. The technique uses approximating parametric models for the projection of right hand side variables onto the instrument space, and for conditional heteroskedasticity and serial correlation of the disturbance. Use of parametric models allows one to exploit information in all lags of instruments, unconstrained by degrees of freedom limitations. Analytical calculations and simulations indicate that there sometimes are large asymptotic and finite sample efficiency gains relative to conventional estimators (Hansen (1982)), and modest gains or losses depending on data generating process and sample size relative to quasi-maximum likelihood. These results are robust to minor misspecification of the parametric models used by our estimator.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 13134.

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Date of creation: May 2007
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Handle: RePEc:nbr:nberwo:13134

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Find related papers by JEL classification:
C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Estimation
C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions

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  1. David Laibson & Andrea Repetto & Jeremy Tobacman, 2007. "Estimating Discount Functions with Consumption Choices over the Lifecycle," NBER Working Papers 13314, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  2. Stanislav Anatolyev, 2005. "Optimal Instruments in Time Series: A Survey," Working Papers w0069, Center for Economic and Financial Research (CEFIR). [Downloadable!]
    Other versions:
  3. Elena Corallo, 2005. "The effect of the war risk: a comparison of the consequences of the two Iraq wars on some financial variables," LIUC Papers in Economics 171, Cattaneo University (LIUC). [Downloadable!]
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