Abstract. Most analyses of the relationship between state institutions and interpersonal trust claim either that the state crowds out trust or that it helps to create trust, acting as a third-party enforcer of agreements. Actually, the relationship between the state and trust is much more complex. This article presents a theoretical model that predicts how trust will evolve in highly efficacious and low-efficacious states.

Abstract. The paper introduces the use of blockmodeling in the micro-level study of the internal structure of co-authorship networks over time. Variations in scientific productivity and researcher or research group visibility were determined by observing authors’ role in the core-periphery structure and crossing this information with bibliometric data.