In this paper we provide semiparametric estimation strategies for a sample selection model with a binary dependent variable. To the best of our knowledge, this has not been done before. We propose a control function approach based on two di erent identifying assumptions. This gives rise to...

This paper develops a three stage oligopoly game for R&D cooperation, R&D expenditure and product market competition. In the first stage, firms decide whether or not to conduct R&D in cooperation with other firms. In the second stage the level of R&D investment is determined. Finally, firms...

In the paper is considered identification of coefficients in equations explaining a continuous variable, say the number of sickness absence days of an individual per year, by cohort, time and age, subject to their definitional identity. Extensions of a linear equation to polynomials, including...

Identification of equations explaining a continuous variable, e.g., the length of sickness absence spells, by age, cohort and time (ACT), subject to their definitional identity is reconsidered. Various extensions of a linear equation to polynomials are explored. If no interactions between the...

The aim of this paper is two-fold: (a) to establish a 'map' for describing the wide class of Limited Dependent Variables (LDV) univariate and multivariate models in the econometric literature and (b) to localize typical models in this tradition within the structure, extending typologies of...

A measurement error model is a regression model with (substantial) measurement errors in the variables. Disregarding these measurement errors in estimating the regression parameters results in asymptotically biased estimators. Several methods have been proposed to eliminate, or at least to...

This paper analyses decisions regarding smoking and drinking for a sample of Irish women. Double-hurdle models are estimated to determine whether decisions to smoke/drink are made independently of how much to smoke/drink. Given the potential complementarities between smoking and drinking a model...

This study analyses the factors influencing pricing of National Park visits in Kenya. A two step regression procedure is used to develop a pricing mechanism for Lake Nakuru National Park (LNNP). In the first stage, count data models are applied to estimate the Trip generating function to LNNP...

The present paper develops a simple asymmetrical informational model that allows us to understand the individual´s willingness to participate in a strike. We develop and compare two signaling models of strikes: in one, firms are able to monitor and enforce hours and offer different workweeks to...

The present paper aims at explaining strike incidence, measured by the proportion of strikers observed in each sector, and strike severeness, proxied by a measure of mean strike hours lost per worker in each industry. We find that Industry concentration dissuades striking – more concentrated...