22 Chapter 1 RESEARCH DESIGN Creating intervention- and control locations For our research questions we needed prison locations willing to start implementing MCD: the intervention locations in our study. The DCIA program of craftsmanship ensured money and time were available within the organization (DCIA, 2022) to pay attention to proper implementation of MCD. Overall, the organization and implementation of the MCD sessions was the responsibility of the DCIA Educational Institute. MCD can be facilitated in many different settings and with various conversation methods (Steinkamp & Gordijn, 2003). For our research aims, the intervention groups involved in MCD needed regulated conditions. Such regulations would benefit the comparability and validity of our data. To prevent having different conditions at each session during the series of MCD at DCIA, the following regulations in the setting of MCD at the intervention locations were chosen: having one introductory meeting before starting with MCD, having set prison locations that would start implementing MCD with five to six selected teams per location that we could follow during the implementation, they would participate in team-based MCD sessions, using only one type of conversation method for all sessions (i.e., the dilemma method, see Figure 1 and Appendix 2, Stolper et al., 2016), each team would have a fixed pair of MCD facilitators, and all participating teams aimed to have 10 MCD sessions within one to one-and-a-half years. During these MCD sessions the manager or superior of the team would only participate at the request of the team. MCD sessions were scheduled for two to two-and-a-half hours each. All involved teams appointed one team member who would help a local coordinator and the Educational Institute with the organizational aspects of MCD. This person, together with their team and the local coordinator, decided upon a scheduled time for MCD sessions. Most teams opted for periods during their regular work routines, for example, a time they would otherwise use for sports. The MCD sessions were guided by a total of 18 trained MCD facilitators deployed as freelancers by the DCIA Educational Institute. The facilitators were professionally trained, most of them by the ‘MCD facilitator training program’ of the Department of Ethics, Law and Humanities of the Amsterdam UMC (Stolper et al., 2015). Furthermore, to be able to analyze the impact of MCD, we selected locations of prisons that would serve as control locations. These locations neither had the experience nor the intention to start implementing MCD during the period of our data collection. As a condition for our research, no similar training (such as: ‘Talking about your profession’, in Dutch: ‘Praten over je vak’) could take place during our research period. Their staff