Empirical studies analyzing the determinants of U.S. presidential popularity have delivered quite inconclusive results concerning the role of economic variables by assuming linear relationships. We employ penalized spline smoothing in the context of semi-parametric additive mixed models and...

The determinants of portfolio choice have been studied extensively in the field of household finance. In this paper we study the determinants of the decision to hold risky assets based on a novel dataset of German bank data. Our primary focus is the question whether East Germans differ in their...

Successful innovation is a precondition for economic prosperity. While various potential determinants of innovative activity have been considered, little empirical evidence is yet available for the influence of firm governance issues. This paper aims at filling this gap in the literature by...