Twenty-Five Years of Group Dynamics

Objective: Group Dynamics: Theory, Research, and Practice celebrates its 25th anniversary in 2021. This special issue invited each former and current editor of the journal to reflect on a key topic of group dynamics and to provide a roadmap for current and future researchers. Method: The five former and current editors of Group Dynamics selectively reviewed the literature on a particular topic and suggested future research agendas based on the review. Results: Topics reviewed by the editors included: a unified theory of cohesion, actor-partner interdependence models, expert and lay conceptions of cooperation, the social relations model, and the synergy between reflective functioning theory and team cognition. Conclusion: These reviews by five experts in the field provide a way forward for group dynamics researchers. The reviews help define important concepts and methods that will have a scientific, social, and clinical impact for the next 25 years.