@inproceedings { prada04, abstract = {Synthetic characters are used in virtual environments to improve the users’ interaction experience. However, this effect is only possible if the characters are able to show a coherent and believable behaviour. Therefore, in scenarios where users and synthetic characters interact in the context of a group it is very important that the group inter- actions follow a believable group dynamics. In this paper we describe a model that supports the creation of believable group dynamics based on a characterization of the different types of interactions that may occur in a group. This model will be applied in the development of an application that will be used by a group of psychologists in their studies of group dynamics.}, address = {New York, USA}, booktitle = {Workshop on Coalition and Teams: Formation and Activity. AAMAS'04 - 3rd International Joint Conference on Autonomous Agents and Multi Agents Systems}, keywords = {autonomous agents, group interactions, believability}, month = {September}, title = {Building Believability in Groups of Synthetic Characters}, year = {2004}, author = {Rui Prada and Ana Paiva} }