My research focuses on the general theory of social structures. Following several strands of sociological theory (most prominently Harrison White), I regard social structures as composed of social networks which are interwoven with meaning. Networks are not a-cultural entities, but are themselves symbolic structures, embodying interpersonal expectations and the construction of personal identities. Social categories and cultural frames for relationships make for the structuring of social networks.

In my doctorate, I applied this theoretical perspective to the integration of Italian migrants in Germany. The main idea was that ethnicity and the ethnic composition of the migrants' personal networks interact. This proved to be true, but only for more practical aspects of ethnicity. Similarly, I showed that acculturation primarily depends on the ethnic composition of migrants' personal networks, rather than on their socio-economic status.

Currently, I am exploring the implications of the network theoretical approach for the analysis of social inequality. in particular, I focus on the interplay of categories and network structure, and on the analysis of structural inequality in survey research.

Other fields of my work, past and current, include:
- the sociology of the political system
- social aspects of contemporary science fiction
For a more detailed look at my work, please refer to my publications.