This paper compares alternative time-varying volatility models for daily stock-returns using data from Spanish equity index IBEX-35. Specifically, we have estimated a parametric family of models of generalized autoregressive heteroskedasticity (which nests the most popular symmetric and...

This work presents a theoretical framework to study if the motive for money-transfers within families is altruism or exchange. We propose models which explicitly incorporate transfers on education as an additional family transfer. Our models allows us to discriminate between the two possible...

This paper proposes a test statistic for discriminating between two partly non linear regression models whose parametric components are non-nested. The statistic has the form of a J-test based on a parameter which artificially nests the null and alternative hypotheses. We study in detail the...

Counterfactual decompositions allow researchers to analyze changes in wage distributions by discriminating between the effect of changes in population characteristics and the effect of changes in returns to these characteristics. Counterfactual distributions are derived here by recovering the...

This paper makes a proposal for a taxonomy of boundary changes in Spanish municipalities along time. The different types of changes are organized in a hierarchy, as well as represented in a homogeneous manner, independently of the number of municipalities involved and of the changes suffered....

This paper provides empirical evidence on the relationship between indicators of competitive pressure and innovation incentives using panel data of Spanish manufacturing firms for the period 1990-2006. Instead of using standard indicators of competition, such as market concentration measures or...