NBER Working Papers by Bernd Lucke

There are several candidate explanations for macro-fluctuations. Two of the most common discussed sources are surprise changes in disembodied technology and monetary innovations. Another popular explanation is found under the heading of a preference or more generally a demand shock. More recently two other explanations have been advocated: surprise changes in investment specific technology and news about future technology growth. The aim of this paper is to provide a quantitative assessment of the relative merits of all these explanations by adopting a framework which allows them to compete. In particular, we propose a co-integrated SVAR approach that encompasses all 5 shocks and thereby offers a coherent evaluation of the dynamics they induce as well as their contribution to macro volatil...