Although the effect of government transparency on trust is heavily debated, our theoretical and empirical understanding of this relationship is still limited. The basic assumption tested in this article is whether transparency leads to higher levels of perceived trustworthiness. This article uses theories from social psychology to advance our understanding of the effects and mechanism of the relationship between transparency and the perceived trustworthiness of a government organization. Based on these theories, we propose two alternative hypotheses: (1) the general predisposition to trust government, and (2) prior knowledge about the specific issue moderates the relationship between transparency and trust. These assumptions are tested by online experimental research, which demonstrates that these factors indeed affect the relationship between transparency and perceived trustworthiness: changes in perceived competence occur mainly in the group of citizens with high trust and little knowledge, whereas changes in perceived benevolence occur predominantly in the group of citizens with low knowledge and low trust. These findings highlight that prior knowledge and general predisposition to trust should be incorporated in our theoretical models of the relationship between transparency and perceived trustworthiness.
