In my inaugural lecture I try to describe my research and teaching intention with three complexes of themes: the first complex 'Statistics and Professions', which also is the denomination of my chair, is on the essential characteristics of Professions (Freie Berufe) and the possibilities and...

This essential dimensions of microsimulation as an instrument to analyze and forecast the individual impacts of alternative economic and social policy measures are surveyed in this study. The basic principles of microsimulation, which is a tool for practical policy advising as well as for...

This study on market and non-market labor supply and taxes is based on a theoretical microeconomic model with multiple labor supply in the formal and informal economy. This multiple time allocation model, which explicitly takes into account taxes, transfer payments, socioeconomic characteristics...

Microdata have become increasingly important for economic and social analyses. One striking problem with almost any practical analysis of microdata, microdata as a singular cross or longitudinal sample or within (static) microsimulation, is to achieve representative results. In this study a...

Many analyses of firm performance are based upon self-reported measures. However, not only are these likely to be more subject to general reporting error than alternative official sources, but also measures of relative performance may be subject to the biases observed in the psychology...

Researchers have debated which methods are most valid and reliable for studying time use. One key instrument for measuring time use is the time diary, which has unique analytic properties that, if not adjusted for, can bias estimates. To assess sampling and non-response bias and potential under-...

It is generally acknowledged that the size-class distribution of enterprises in a country is an important characteristic of its economy. The EU countries are increasingly co-operating and adjusting to each other's needs in order to achieve optimal joint output. However, country differences -at...

This research attempts to evaluate the nature and extent of consistency of key macroeconomic data frequently used by reserachers and policy analysts across various data sources, bouth internal and external.

This essential dimensions of microsimulation as an instrument to analyze and forecast the individual impacts of alternative economic and social policy measures are surveyed in this study. The basic principles of microsimulation, which is a tool for practical policy advising as well as for...