This paper looks at potential implications emerging from including shares as a control variable in fixed effect estimations. By shares I refer to the ratio of a sum of units over another, such as the share of immigrants in a city or school. As will be shown in this paper, a logarithmic...

Based on new, exceptionally informative and large German linked employer-employee administrative data, we investigate the question whether the omission of important control variables in matching estimation leads to biased impact estimates of typical active labour market programs for the...

This paper is a preliminary appraisal ofthe stylised facts and the major open questions - both methodological and Substantive - that have emerged in the empirical literature on international per-capita income and productivity convergence. On basis of various distinctivc lines of reasoning, it is...

Which factors determine the prices of West German expörts and imports? To answer this question, two single equation error correction modeis are applied. Export prices turn out to be mainly determined by prices for concurrent goods proiduced abroad, whereas unit labor costs and the nominal...

Markennamen spielen eine wichtige Rolle im Wirtschaftsleben. Doch wie hoch ist ihr Wert wirklich? Der hedonische Preisansatz ist geeignet, den Wert von Markennamen auf Produktebene zu bestimmen. Er wird in dieser Arbeit vorgestellt und auf die Surfboard-Industrie angewandt. Die...

In this paper I discuss the general statistical relationships between beta- and sigmaconvergence (for a definition see section 2) and the implications of the Solow-Swan and Ramsey-Cass model for an OLS-estimation of beta- and sigma-convergence of the log of per capita GDP over a cross section of...

Making use of restrictions imposed by equilibrium, theoretical progress has been made on the nonparametric and semiparametric estimation and identification of scalar additive hedonic models (Ekeland, Heckman, and Nesheim, 2002) and scalar nonadditive hedonic models (Heckman, Matzkin, and...