Growth is associated with (i) shifts in the sectoral structure of the economy, (ii) changes in relative prices and (iii) the Kaldor facts. Moreover, (iv) cross-sectional data shows systematic differences in the expenditure structure across income groups. This paper presents a growth model which...

We study a minimal model of automation in which, in the limit, labor is replaced by capital in all tasks. If tasks are gross complements and automation is sufficiently slow, the labor share remains strictly positive despite an endogenous reduction in hours worked and full automation in the...

The character of economic activity in Johannesburg has been shifting over time; away from primary and secondary sectors and towards services. Economic activity is very unevenly spread across the city and not well aligned with areas where the majority of the population lives. There is a need to...

Growth of per-capita income is associated with (i) significant shifts in the sectoral economic structure, (ii) systematic changes in relative prices and (iii) the Kaldor facts. Moreover, (iv) cross-sectional data shows systematic expenditure structure difference between rich and poor households....

This study argues that mobile learning delivers education more affordably, accessibly and effectively than the traditional model of delivering education, which further deprives the poor in Africa. The traditional model of education denoted in this study refers to the model of education that...

In this paper we show that the R&D effort of a country and its economic growth are highly correlated. In order to analyze this relationship, we study the nature of the researching activity. In particular, we focus on the following characteristics of research: the inherent uncertainty of...

In this paper we show that the R&D effort of a country and its economic growth are highly correlated. In order to analyze this relationship, we study the nature of the researching activity. In particular, we focus on the following characteristics of research: the inherent uncertainty of...

Empirical evidence shows that R&D spending is highly correlated with firm productivity, highly concentrated among large firms, and responsive to trade liberalization. This paper develops a model of product upgrading with heterogeneous firms that captures these characteristics by allowing firms...

This paper examines the Aghion and Howitt [1992] “creative destruction” endogenous growth model in an open economy setting. We consider four alternative trade regimes. The first two regimes allow the monopoly producer of the intermediate good to attain worldwide monopoly rents. In the...

This paper shows that the R&D intensity of an industry plays an important role in determining international trade patterns via its e¤ect on scale economies. I first develop a model of trade with heterogeneous firms where firms compete with each other by spending on fixed product development...