“…Finally, our data reveal a further need for a dialogue between different research methods, that is, qualitative strategies, in particular, case studies, and more traditional quantitative strategies, such as randomised controlled trials (RCTs). This call corresponds with existing debates about the 'validity' of current evidence-based research standards in psychotherapy, with many authors asking for a mixed-method approach, in which qualitative methods are seen as just as valuable as statistical studies (see, e.g., Kaluzeviciute, 2021;Truijens et al, 2022).…”