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Welche Wirtschaftswissenschaft brauchen Politik und Gesellschaft? Energiewende, Mobilitätswende, der digitale Wandel, die soziale Desintegration, die Prozess...

This paper presents an overview of different models which explain financial crises, with the aim of understanding economic developments during and possibly after the Great Recession. In the first part approaches based on efficient markets and rational expectations hypotheses are analyzed, which however do not give any explanation for the occurrence of financial crises and thus cannot suggest any remedies for the present situation. A broad range of theoretical approaches analyzing financial crises from a medium term perspective is then discussed. Within this group we focused on the insights of Marx, Schumpeter, Wicksell, Hayek, Fisher, Keynes, Minsky, and Kindleberger. Subsequently the contributions of the Regulation School, the approach of Social Structures of Accumulation and Post-Keynesian approach, which focus on long-term developments and regime shifts in capitalist development, are presented. International approaches to finance and financial crises are integrated into the analyses. We address the issue of relevance of all these theories for the present crisis and draw some policy implications. The paper has the aim to find out to which extent the different approaches are able to explain the Great Recession, what visions they develop about future development of capitalism and to which extent these different approaches can be synthesized.

Ein ungebremster Klimawandel stellt eine existenzielle Bedrohung dar. Was bedeuten diese Erkenntnisse für die Ökonomik als Wissenschaft? Ich schlage eine neue Agenda für die Ökonomik des Klimawandels vor, die sich auf eine Kernfrage bezieht: Wie kann der nachhaltige Wandel erleichtert werden?

The general idea of a Job Guarantee (JG) is that the government offers employment to everybody ready, willing and able to work for a living wage in the last instance as an Employer of Last Resort. The concept tackles societal needs that are not satisfied by market forces and the systemic characteristic of unemployment in capitalist societies. Being a central part of the Modern Monetary Theory (MMT), attention for the JG concept rose in recent years.