*Practical Implications*

Due to its pervasive negative influences, relationship conflict needs to be pro-actively managed in multiparty systems. Conflict reducing techniques both at the party as well as at the system level may help alleviate the detrimental influences of conflict escalation. Interventions aimed at generating task conflict within stakeholder parties will spur collaborativeness in the whole system. Simple normative interventions could help stakeholder parties to engage in healthy task debates as illustrated by research that used ground rules for collaboration to increase the quality of group debates and ultimately group rationality (Cur¸seu and Schruijer 2012). Moreover, process consultation may support multiparty collaboration by stimulating healthy task conflict and reducing the relationship conflict. Finally, behavioural simulations constitute experiential learning opportunities in which individuals can gain an understanding of multiparty dynamics and can develop their collaboration skills.

**Author Contributions:** S.S. and P.L.C. designed and conducted the study; P.L.C. analysed the data; S.S. provided the behavioural simulation materials and brochures; P.L.C. and S.S. wrote and revised the paper.

**Funding:** P.L.C. was supported by a gran<sup>t</sup> of the Romanian National Authority for Scientific Research, CNCS—UEFISCDI, project number PN-III-P4-ID-ERC- 2016-0008. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

**Conflicts of Interest:** The authors declare no conflicts of interest.
