John Maynard Keynes war ein Ökonom, der stets zwischen der Welt der Theorien und der Realität pendelte, er prüfte und verwarf theoretische Annahmen aufgrund seiner Beobachtungen, die er wiederum als Ausgangspunkte für die Entwicklung neuer Theorien nutzte. Gleichzeitig betrieb er als...

In den Wirtschaftswissenschaften lassen sich zwei Theorietypen unterscheiden: Die "idealistische Ökonomie" geht von einem Idealzustand aus und untersucht die Bedingungen, unter denen dieser erreicht werden kann wie die Eigenschaften des "homo oeconomicus". Die "realistische Ökonomie" geht vom...

Neither a gradually rising carbon tax nor emission trading schemes can ensure that the costs of emitting greenhouse gases, in particular CO2, will steadily rise faster than the general price level. If, e.g., global fossil energy prices decline faster than a carbon tax or the emission permit...

The paper deals with the pattern of asset price dynamics as sequence of "bull markets" and "bear markets" and with stabilizing these" long swings" through replacing continuous asset trading with electronic auctions. First, the paper sketches the channels through which the "overshooting" of...

Durch Kreditvergabe schaffen Banken Giralgeld, gewissermaßen "aus dem Nichts". Die Bewegung "Monetäre Modernisierung" sieht darin die Hauptursache für die Schwankungen von Inflation und Konjunktur, für Staatsverschuldung, Spekulation und Finanzkrisen. Daher soll nur mehr die Notenbank das...

Since the end of World War II the dollar has played a double role, it has served as national currency of the US and as key currency of the world economy. As world currency the dollar serves as "numeraire" for supranational flows and stocks since commodities as well as most international...

This paper investigates the sources of the profitability of 1024 moving average and momentum models when trading in the German mark (euro)/U.S. dollar market based on daily data. The main results are as follows. First, each of these models would have been profitable over the entire sample...

This paper examines the mutually reinforcing interactions between exchange rate dynamics and technical trading strategies. I first show that technical trading systems have been quite profitable during the floating rate period. This profitability stems from the successful exploitation of...

This paper investigates how technical trading systems exploit the momentum and reversal effects in the S&P 500 spot and futures market. The former is exploited by trend-following models, the latter by contrarian models. In total, the performance of 2,580 widely used models is analysed. When...