Research project Mismatch: A novel explanation for the decline in co-residential partnerships in the Nordic countries

Using unique administrative registers from Sweden and Finland, this is the first project to develop and comprehensively analyse this explanation. Data allows a population-wide measure of cohabitation rather than marriage only, thereby surpassing a longstanding bottleneck in the literature.

Household structures are decisive for material depravation, child poverty and fertility. Moreover, households are basic organizing structures of everyday life and grasping why they change are fundamental to understanding contemporary society. Therefore, an accurate understanding of the driving forces behind change in partner co- residence is a fundamental scientific task, that also provides a firm ground for policy development.

The findings will improve understanding of why fewer people are co-residing and the increased socioeconomic disparities in couple co-residence, and to advance theoretical developments on this topic.