Paper [I] studies equality of opportunity in Sweden. The distinction between circumstances that constrain an individual’s opportunities and the individual choices also affecting a particular outcome is the main idea of theories of equality of opportunity. In this study, equality of opportunity...

This study focuses on the persistence of poverty in Sweden. The purpose is to distinguish between two different reasons why poverty could persist on an individual level. By using a sample of identical twins, this study takes advantage of the similarity within pairs of twins to separate family...

Individuals that are married are often found to be healthier than singles. A crucial issue is to distinguish if this is due to a <p> selection effect or due to a true protective effect of partnership. The purpose of this study is to distinguish these effects as explanations for a lower risk of...</p>

The purpose of this study is to empirically investigate causal effects between socioeconomic status and absence from the workplace due to sickness. To be able to conclude that income causally affects health it is important to control for both reverse causality and unobserved heterogeneity. This...

The purpose of this study is to reveal the importance of unobserved heterogeneity on marital status. The results for monozygotic (identical) and dizygotic twins indicate an important genetic component in marital status. Simply controlling for marital status could be misleading

This study focuses on earnings immobility and its relation to the originin terms of both the social background and the initial position in the earnings distribution. Twin data is used to reveal the importance for the common background for immobility. A nonparametric technique is used to study if...