This paper is devoted t.o an interpretation of both vacancy data and the Beveridgecurve. Officially reported vacancy data are critically reviewed. The theoretical foundation and empirical application of the Beveridge-curve is examined. We find that the Beveridge-curve is everything but a...

This paper constitutes an interim report on the development of a macroeconometric disequilibrium model. Despite several caveats the model as it stands can be used already for two purposes. First, it is possible to investigate the models forecasting abilities. While the estimation period of the...

The paper deals with causes and consequences of constraints on the adjustment of employment. First, a model of a delayed adjustment of employment and capital is worked out. This model is augmented with linear constraints on the adjustment speed of labour supply and demand. The aggregate model is...

In the paper, the productivity growth of German sectors is analyzed. Sectoral production functions are estimated with annual national account data of 51 sectors from 1960-1990. Both, the pure Solow growth model and the Solow model augmented with human capital do not account for observed...

Mit dem Konjunkturtest, dem Innovationstest und dem Investitionstest des ifo Instituts liegt ein umfangreicher Datensatz der Unternehmen des verarbeitenden Gewerbes in der Bundesrepublik Deutschland vor, der es erlaubt, detaillierte Untersuchungen des Unternehmensverhaltens durchzuführen. Diese...

In the paper, a model of the firm with a delayed adjustment of prices and supply is analyzed. Prices and supply are determined under uncertainty about the location of the demand curve. Three models are distinguished: a price setting with predetermined supply, supply determination with...

In the paper, the sources of productivity growth are investigated by an empirical analysis with micro data for West-German manufacturing firms. The theoretical framework corresponds to an augmented growth accounting approach based on a production function. The empirical results reveal that...

Mit dem Konjunkturtest, dem Innovationstest und dem Investitionstest des ifo Instituts liegt ein umfangreicher Datensatz der Unternehmen des verarbeitenden Gewerbes in der Bundesrepublik Deutschland vor. Die Daten dieser drei Umfragen wurden hier erstmals für einen längeren Zeitraum...

In the paper, productivity convergence is analyzed with a broad panel of industry sector data for the United States and Germany for 1960-1990. The time-series/cross-sectoral data set allows to investigate country-specific convergence, and to control for sector-specific differences in human...

In the paper, a theoretical model of the determinants of innovation behaviour and investment is developed. The model is estimated with micro-data for West- German manufacturing firms from the ifo firm panel. The empirical results reveal a positive effect from firm size and market power on...