Óscar Afonso

TL;DR: In this paper, the authors revises the thesis that exporting firms learn to be more innovative and efficient as they have contact with certain information flows from their foreign activity and explore the connections between two concepts: self-selection and learning-by-exporting.

TL;DR: In this paper, the authors propose a theoretical growth model with which to frame analytically the Quadruple Helix Innovation Theory (QHIT) with the aim to emphasize the investment in innovation transmission mechanisms in terms of economic growth and productivity gains, in one high-technology sector, by stressing the role played by the helices of the quadruple helix innovation model: Academia and Technological Infrastructure, Firms of Innovation, Government and Civil Society.

TL;DR: In this paper, the authors developed a R&D-based growth model with productive public expenditure in order to frame the Quadruple Helix innovation concept, based on four helices: Academia & Technological Infrastructures, Firms, Government and Civil Society.

TL;DR: In this paper, a meta-analysis of the empirical literature that estimates the effect of inequality on growth is presented, and the authors conclude that the high degree of heterogeneity of the reported effect sizes is explained by study conditions, namely the structure of the data, the type of countries included in the sample, the inclusion of regional dummies, the concept of inequality and the definition of income.

TL;DR: In this paper, it is shown that the recent rise of the skill premium, which is highlighted by, e.g., Acemoglu (2002a), arises from the price-channel effect, complemented with a mechanism that can be called technological-knowledge-absorption effect.