Tax incentives are common instruments in regional policies used to attract new investments and promote increase in employment and income, but the impact on regional public finances is very controversial. This paper uses an interregional computable general equilibrium model for the Brazilian...

Abstract Count data regressions are an important tool for empirical analyses ranging from analyses of patent counts to measures of health and unemployment. Along with negative binomial, Poisson panel regressions are a preferred method of analysis because the Poisson conditional fixed effects...

This paper studies models in which hypothesis tests have trivial power, that is, power smaller than size. This testing impossibility, or impossibility type A, arises when any alternative is not distinguishable from the null. We also study settings where it is impossible to have almost surely...