Solow has repeatedly called for the development of models that combine equilibrium and out-of equilibrium outcomes or what he called a macroeconomics of the medium-run. This paper recounts the history of Solow's different attempts to address this issue. It starts in early 1950s when Solow...

Keynesian economics dominated economic thought and macroeconomic policy-making in the 1950s and 1960s. However, the diffusion of Keynesian economics has been uneven. In this paper, we compare the spread of Keynesian economics in two continental European countries: Belgium and Italy. We focus on...

In the 1960s and 1970s Harrod shifted the emphasis of his research in economic dynamics from the study of business cycles (instability principle) to the investigation of the growth process. As part of that, he restated his concept of the natural growth rate as an optimum welfare rate. The...