Establishing causal relationships in social policy evaluation is important, but difficult due to sample selection. To evaluate the performance of estimators designed to handle sample selection bias we analyse data from a Norwegian rehabilitation project with a randomised experimental design. The...

This paper examines the empirical importance of randomisation bias in a Norwegian randomised field trial on a rehabilitation programme for sick listed worders. Inclusion of participants in the trial was base on information obtained from administrative social insurance records. Professional...

Sample attrition is a potential source of selection bias in experimental as well as non-experimental programme evaluation. For labour market outcomes such as employment status and earnings, missing data problems caused by attrition can be circumvented by collection of follow-up data from...

Three Nordic countries, Norway, Finland and Sweden, and Japan had experienced the severe financial crisis after the rapid asset price increase in almost the same period. However the recovery was fast in Nordic countries, while Japan experienced a prolonged recession, so called lost two decades....

Sickness absence has risen over the past years in Norway. One explanation put forward is that a tougher labor market represents a health hazard, while a competing hypothesis predicts that loss of job security works as a disciplinary device. In this analysis we aim to trace a causal impact of...

We use two non-parametric measures to characterize intergenerational mobility (IGM) throughout the income distribution: Rank Mobility and Income Share Mobility. We examine differences in these IGM curves between Germany, Norway, Sweden and the United States using comparable samples. Although we...

The article offers a complementary theory for conglomerate mergers. Conglomerate mergers take place to achieve control over distribution channels that otherwise could be used by rival entrants. An entrant with a very differentiated product is accommodated, and an entrant with a close substitute...

It is often asserted that agricultural land yields significant amenity benefits that could be used as a rationale for some of the substantial support to agriculture occuring in many industrialized countries. This paper introduces a method for incorporating information on the willingness to pay...

In this paper the author estimates the effect of the Helsinki agreement and economic factors on sulfur emissions using data from 25 European coutnries. To allow for self-selection into the agreement, a treatment effect model was estimated using the Heckman two-step procedure.

The paper studies the performance of joint ventures where upstream firms sell inputs to a production joint venture. It is found that joint ventures lead to overinvoicing of input prices (transfer prices) compared to integrated firms resulting in lower aggregate profits. Tax and tariff policy may...