Data in econometrics are, as a rule, non-experimental and hence we have to use the same data set to select the model and also to estimate the parameters in the selected model.In standard applied econometrics practice, however, one reports zero bias and some variance of the (pretest) estimators...

We examine the importance of possible non-random attrition to an econometric model of life cycle labor supply including joint nonlinear taxation of wage and interest incomes and latent heterogeneity.We use a Wald test comparing attriters to nonattriters and variable addition testing based on...

This paper proposes a semiparametric estimator for single- and multiple index models.It provides an extension of the average derivative estimator to the multiple index model setting.The estimator uses the average of the outer product of derivatives and is shown to be root-N consistent and...

Because their departures are difficultly observed, little is known about the performance of immigrants who leave their adoptive homeland.This paper shows conditions under which the (conditional) outmigration probability, work probability and the expected earnings of outmigrants are...

The paper extends and replicates part of the analysis by Barsky, Juster, Kimball, and Shapiro (1997), which exploits hypothetical choices among different consumption streams to infer intertemporal substitution elasticities and rates of time preference.We use a new and much larger dataset than...