Credit rating agencies (CRAs) very often have been criticized for announcing inaccurate credit ratings and are suspected of being exposed to conflicts of interest. Despite these objections CRAs remained largely unregulated. Based on Pagano & Immordino (2007), we study the optimal regulation of...

Discretionary monetary policy produces a dynamic loss in the New Keynesian model in the presence of cost-push shocks. The possibility to commit to a specific policy rule can increase welfare. A number of authors since Woodford (1999) have argued in favour of a timeless perspective rule as an...

Im Zuge der Gründung der Europäischen Währungsunion übernahm die Europäische Zentralbank im Januar 1999 die Verantwortung für eine einheitliche Geldpolitik im Euroraum. Während damit Nominalzinsunterschiede innerhalb der EWU praktisch der Vergangenheit angehören, existieren weiterhin...

This paper provides a framework to analyse emergency liquidity assistance of central banks on financial markets in response to aggregate and idiosyncratic liquidity shocks. The model combines the microeconomic view of liquidity as the ability to sell assets quickly and at low costs and the...

Over the last decade, the simple instrument policy rule developed by Taylor (1993) has become a popular tool for evaluating monetary policy of central banks. As an extensive empirical analysis of the ECB’s past behaviour still seems to be in its infancy, we estimate several instrument policy...

According to Woodford (1999) and (2003) [Woodford, Michael, 1999. Commentary: how should monetary policy be conducted in an era of price stability? In: New challenges for monetary policy. Federal Reserve Bank of Kansas City, pp. 277-316; Woodford, Michael, 2003. Interest and prices: foundations of...

This thesis develops and applies three different frameworks to analyse monetary policy from a theoretical and empirical perspective within three self-contained chapters. Chapter 2 looks at optimal monetary policy in the modern micro-founded New Keynesian macroeconomic model, while chapter 3...

Liquidity problems lie at the heart of crises on financial markets as demonstrated in this paper by detailed descriptions of the stock market crash in 1987, the LTCM-crisis in 1998 and the financial market consequences of 11 September 2001. The events also demonstrate that modern central banks,...

Over the last decade, the simple instrument policy rule developed by Taylor has become a popular tool for evaluating the monetary policy of central banks. As an extensive empirical analysis of the European Central Bank's (ECB) past behaviour still seems to be in its infancy, we estimate several...