Regression spline bivariate probit models: A practical approach to testing for exogeneity

Bivariate probit models can deal with a problem usually known as endogeneity. This issue is likely to arise in observational studies when confounders are unobserved. We are concerned with testing the hypothesis of exogeneity (or absence of endogeneity) when using regression spline recursive and sample selection bivariate probit models. Likelihood ratio and gradient tests are discussed in this context and their empirical properties investigated and compared with those of the Lagrange multiplier and Wald tests through a Monte Carlo study. The tests are illustrated using two datasets in which the hypothesis of exogeneity needs to be tested

College Major Choice and Ability: Why is General Ability not Enough?

The choice of college major is one of the most important decisions students make. In this paper we study the impact of ability on college major choice,using a data set for full-time students enrolled in four-year business and economics programs offered by the Faculty of Economics, University of Ljubljana. We distinguish between general and major-specific ability, which measure different dimensions of cognitive ability. We show that both measures are important in explaining individual decisions and that misleading results can follow from observing only commonly employed general ability. We also find important gender differences as males are more likely to base their major choice on the ability to complete coursework, while females are more likely to decide according to unobserved preferences

Le marché politique: Qu'est-ce qui est produit? Qui y participe? Qui en profite?

Politique ; Denses ; Gouvernement ; Election S

Bureaucratic Corruption As a Constraint on Voter Choice

It Has Often Been Assumed That a Country's Tax Level, Tax Structure Progressivity and After-Tax Income Distribution Are Chosen by Voters Subject Only to Their Budget Constraints. This Paper Argues That At Certain Income Levels Voters' Decisions May Be Constrained by Bureaucratic Corruption. the Theoretical Arguments Are Developed in Asymmetry Limits the Capacity of the Fiscal System to Generate Revenues by Means of Direct Taxes. This Hypothesis Is Tested Witha Sample of International Data by Means of a Simultaneous Equation Model. the Distortions Resulting From Corruption Ar Captured Through Their Effects on a Latent Variable Defined As the Overall Fiscal Structure. Evidence Is Found of Causality Running From This Latent Variable to the Level of Taxes and the Degree of After Tax Inequality.Bureaucracy ; Corruion ; Asymmetry ; Informa Tion ; Fiscal Policy