The impact of environmental interest groups in international negotiations: Do ENGOs induce stronger environmental commitments?

Although there is a substantial amount of research that studies how environmental interest groups/non-governmental organizations (ENGOs) influence international environmental negotiations, both the theoretical work and the empirical evidence were not yet able to answer comprehensively if this makes it more likely that states, in turn, commit to stronger environmental agreements. This article seeks to contribute to clarifying this. First, the authors argue that a higher degree of ENGO access to official negotiations and a larger number of ENGOs actively participating during bargaining processes can facilitate outcomes of environmental negotiations. The authors then analyze quantitative data on international environmental regimes and their members' commitment levels from 1946 to 1998 and obtain robust support for their claims. However, the rationale on the introduced explanatory factors also implies that the impact of ENGO access on states' commitment levels should vary conditional on the number of ENGOs actively participating. The paper finds evidence for such an interaction, although the results go against our expectations.