Abstract
The primary objective of transdisciplinary research (TDR) is to contribute to the solution of complex 'real-world' problems by integrating heterogeneous knowledge and achieving societal effects. However, establishing a continuous impact orientation during TDR processes remains a challenge, as the necessary tools are not yet sufficiently available. We developed and tested a half-day workshop format for strengthening the impact-oriented project management and research activities of seven TDR projects. Our findings indicate that the reflective impact workshops supported participants in pursuing societal effects systematically. Applying the methodological approach also fosters TDR process qualities such as knowledge integration. Conducted at different project stages, the results can serve as a basis for monitoring and adapting the project design. The reflective approach•includes scientific and non-scientific TDR project team members,•draws on Theory of Change as a conceptual framework and motivates participants to reflect on plausible impact pathways and make implicit assumptions about interlinkages between different forms of societal effects explicit, and•provides results which enable project partners to adjust their project design for greater societal effectiveness.