We show, in a very plausible theoretical setting, that control function estimators (CFEs) of firm production function, such as Olley-Pakes, may be biased. The bias will occur, in particular, when investments respond differently to short- and long-lasting changes in productivity. We modify the...

Recently, Dette, Neumeyer and Pilz (2005a) proposed a new monotone estimator for strictly increasing nonparametric regression functions and proved asymptotic normality. We explain two modifications of their method that can be used to obtain monotone versions of any nonparametric function...

Recently, Dette, Neumeyer and Pilz (2005a) proposed a new monotone estimator for strictly increasing nonparametric regression functions and proved asymptotic normality. We explain two modifications of their method that can be used to obtain monotone versions of any nonparametric function...