Social capital is naturally embedded in social networks. In his famous work on the causal relationship between "bridging" social capital (e.g., associational life), trust, and civic behavior, Putnam [1993] did not investigate the structural aspect of such networks.
Recently, the relationship between associational life and civicness of ethnic minority groups in Europe has been investigated [Fennema, Tillie, 2001; Jacobs et al, 2004; Vermeulen, Berger, 2008], without reaching uniform conclusions. In this work, simple structural properties of the network of interlocking directorates among ethnic associations are used as a proxy of the social capital of the corresponding minority group. We pursue this line further, arguing that more advanced models may consistently predict differences among the studied communities, and look at the structure of such networks,but also at the dynamics that produced it. Here we present results with a stochastic actor-based model, SIENA [Snijders, 2010], which estimates the effect of actor covariates and local structure on network evolution. We model the dynamics of the full two-mode network among directors and boards of voluntary associations, including the structural effects proposed by [Koskinen, Edling, 2012], and considering the political orientation of associations as a covariate. Using data from [Vermeulen, Berger, 2008], we compare the evolution of interlocks among Turkish associations in two European capitals, and explain the noticeable difference in structure by looking at statistically significant differences among the estimated effects. In the longer term we intend to relate the dynamics of these networks to the civic behavior of the corresponding communities.
