The CoAct project has been a comprehensive effort to evaluate and assess the impact of participatory research processes. By examining the various tools and methods employed, the project aimed to provide insights into the effectiveness of these approaches in achieving their intended outcomes. The final impact assessment report presents a detailed analysis of the project's findings, highlighting the successes and challenges encountered along the way. This report serves as a valuable resource for researchers, policymakers, and practitioners seeking to understand the complexities of participatory research and its potential applications in real-world contexts.