Motivated by the challenge of combining psychological theories and methods with high-tech gaming and simulating technology, a project was carried out to develop a simulator that could train people in the skill of negotiation. An analysis of the existing theory, interviews with experienced negotiators and observations of negotiation in action formed the basis for a User Centred Design process. Through the application of Contextual Design methods, traditional qualitative methods, and a Usability test, this process has currently resulted in the overall design of a training program and an early design prototype. This work is described in thefollowing document. As well as this a review of central existing theories on group development was carried out. This review concluded with a suggestion to pair Systematising Person-Group Relations (SPGR) with Action Research methods for further research. Finally,a study was carried out using these methods, showing that SPGR and Action Research provide rich and valuable data on group development.