Client Perceptions of Reported Outcomes of Group Model Building in the New Zealand Public Sector

System dynamics modellers sometimes involve decision-makers in the modelling process, a method known as “group model building”. Group model building has been associated with a number of different outcomes, and it is not clear which of these outcomes are important to clients. The public sector is a significant audience for group model building interventions; this paper reports on what outcomes are most valued by potential clients in the New Zealand public sector. Senior management within four government agencies identified the employees who were most likely to commission and conduct group decision processes. These individuals participated in detailed semi-structured interviews, and completed a written questionnaire, exploring the contexts in which group model building may be useful and the outcomes sought in each situation. The results suggest that, even within the public sector, the importance of a particular outcome will depend upon context. However, public servants generally appear to value trust and agreement over policy quality when conducting group-decision processes. Knowledge of the outcomes sought by potential clients helps guide the outcomes measured by researchers, and helps practitioners to tailor communication messages to clients.