You will collaborate closely with the project team at Radboud University and the Radboud university medical center (Radboudumc), and you will take a leading role in the realisation of several objectives. You will develop the intervention in co-creation with the participating couples and mindfulness and relationship experts. In close collaboration with the other PhD candidate on this project, you will set up a randomised controlled trial that will test the mindfulness-based intervention against an active control group on various relationship outcomes, while exploring various mechanisms.