We propose a panel data approach to disentangle the impact of “one treatment” from the “other treatment” when the observed outcomes are subject to both treatments. We use the Great Hanshin-Awaji earthquake that took place on January 17, 1995 to illustrate our methodology. We find that...

Zusammenfassung Die Konjunkturforschung ist in ihren Untersuchungsfeldern Theorie, Empirie, Prognose in unterschiedlichem Maße vorangekommen. Eine Konjunktur-Dichotomie hat sich aufgetan. Die Frage ist zu stellen, ob der Einsatz von Konjunkturindikatoren (aus Befragungen oder aus der Statistik...

The question arises whether there can be an enrichment of business cycle research when business cycle indicators will be used in an increasing dimension. This article, dedicated to Professor Adolf Wagner, tries to differentiate three fields of research: Hypothesis formation in theory,...