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Published online by Cambridge University Press: 07 October 2009
We study a nonlinear panel data model in which thefixed effects are assumed to have finite support.The fixed effects estimator is known to have theincidental parameters problem. We contribute to theliterature by making a qualitative observation thatthe incidental parameters problem in this model maynot be not as severe as in the conventional case.Because fixed effects have finite support, theprobability of correctly identifying the fixedeffect converges to one even when the crosssectional dimension grows as fast as someexponential function of the time dimension. As aconsequence, the finite sample bias of the fixedeffects estimator is expected to be small.
We are thankful to Guido Kuersteiner and tworeferees for helpful comments. We also thankTimothy Derdenger for proofreading.