"International organisations (IOs) wield considerable influence in today’s world. Distinguishing them from other actors are the new ideas they produce and communicate that can reframe global debates. However, there is little research about how these organisations evaluate their communication activities. This thesis sets out to fill this gap by providing the first in-depth study of communication evaluation within IOs. The central question of this thesis is to assess the extent to which communication evaluation is possible within IOs with three specific questions: 1) the appropriateness and feasibility of communication evaluation methodology for IOs; 2) the influence of internal and external factors; and 3) the use of communication evaluation findings in IOs." (Abstract)