In the present paper we propose a new method, the Penalized Adaptive Method (PAM), for a data driven detection of structural changes in sparse linear models. The method is able to allocate the longest homogeneous intervals over the data sample and simultaneously choose the most proper variables...

In this paper, we conduct simultaneous inference of the non-parametric part of a partially linear model when the non-parametric component is a multivariate unknown function. Based on semi-parametric estimates of the model, we construct a simultaneous confidence region of the multivariate...

Whilst gender inequality has been falling in the developed world, child-related gender inequality in pay has stayed constant. In this paper I use German panel data spanning across 33 years from 1984 until 2017 including over 50,000 individuals. The main contribution of this paper is the analysis...

The efficiency wage hypothesis is tested by using one of the recently developed methods to measure technical efficiency. We use panel data on 40 Turkish cement plants for the period 1980-1995. The predictions of the efficiency wage hypothesis are tested in two ways: estimation of wage augmented...

This paper analyses the asymptotic and finite sample implications of different types of nonstationary behavior among the dependent and explanatory variables in a linear spurious regression model. We study cases when the nonstationarity in the dependent and explanatory variables is deterministic...

This paper studies the Minimum Divergence (MD) class of estimators for econometric models specified through moment restrictions. We show that MD estimators can be obtained as solutions to a computationally tractable optimization problem. This problem is similar to the one solved by the...

This paper analyses the asymptotic behavior of the Engle-Granger t-test for cointegration when the data include structural breaks, instead of being pure I(1) processes. We find that the test does not possess a limiting distribution, but diverges as the sample size tends to infinity. Calculations...

General Method of Moments (GMM) estimation of a linear one-equation model using panel data with errors-in-variables is considered. To eliminate fixed individual heterogeneity, the equation is differenced across one or more than one periods and estimated by means of instrumental variables. With...

The procedure proposed by Feenstra and Hanson (1997) to correct the standard errors in a two-stage regression with generated dependent variables does not guarantee positive variances. We propose a modified correction procedure such that standard errors can always be computed.

A estimação da curva de Phillips para Portugal no período 1954-1995 com base em dados anuais, através da abordagem de Johansen, permite-os concluir que a variação dos custos unitários de trabalho são função decrescente da variação da taxa de desemprego e do erro de equilíbrio (entre...