An n-commodity, n-factor, A"-country log-linear model is developed, with identical Cobb-Douglas production coefficients and identical consumer expenditure shares across countries, in which factor endowments are such as to permit positive production of all commodities in all countries, hence...

A widely used method in the analysis of complex econometric models is to replace the "true model" by a highly simplified aggregative one in which the variables are grouped and replaced by sums or weighted averages of the variables in each group. The analysis of the problem of choosing an...

This volume collects three independent contributions which discuss the role of computable general equilibrium (CGE) modelling in both research and teaching. The first paper by John Chipman suggests that statistical methods could be incorporated into CGE analysis. He argues that this would allow...

Aggregation may be harmful but cannot always be avoided in the analysis of complex econometric models. It should be carried out intelligently by choosing ein aggregative model optimally for modes of aggregation speeified in advance, i.e. minimizing the bias introduced by aggregation and...

A widely used method in the analysis of complex econometric models is to replace the "true model" by an aggregative one in which the variables are grouped and replaced by sums or weighted averages of the variables in each group. The analysis of the problem of choosing an aggregative model...

This paper takes a closer look at the way unobserved characteristics of individuals confound wages and firm tenure. In turn of our structural analysis, which is built on estimating a reduced form for tenure and a structural wage equation, we disentangle returns to a latent type variable from...

In this paper we analyse the effect of immigration on the labour market conditions for different skill groups. We develop a model of endogenous labour supply in which immigration affects educational decisions. We show how the skill premium changes with immigration of low skilled labour under...

In this paper I develop a theoretical model explaining optimal wage-tenure profiles for heterogeneous labor. My findings entail that high productive people have steeper profiles than low productive individuals. I find strong empirical evidence for these findings. At the end of my paper, I...

In this paper we ague that any meaningful bibliometric evaluation of researchers needs to take into account that research productivity follows distinct life cycles. Using an encompassing data set portraying the research behavior of German academic economists, we first show that research...