2.1. Setting

Qualitative designs are especially suitable to answer explorative research questions without the need of presuppositions from previous research (Mazzola et al., 2011; Meyer et al., 2012; Kitzinger, 1995). Therefore, we chose a qualitative design for this study. Focus groups were conducted as a voluntary part from a five-day elective workshop on mHealth for medical students that took place from March 2, 2020 until March 6, 2020 at the medical school of the Heinrich Heine University Düsseldorf in Germany. The elective workshop focused on participatory design approaches and mental health app prototyping. Two focus groups were conducted on the second day and two focus groups were conducted on the third day of the workshop. All participants were provided with basic information on IMIs during the first day in order to foster a common understanding for the discussion. We chose to conduct four groups due to the limited number of students in the workshop. When we found that data saturation was reached with these four groups and no new content emerged, we decided not to conduct further focus groups with another cohort of medical students.