Behavioral patterns of individuals and groups during co located collaboration on large high resolution displays Collaboration among multiple users on large screens leads to complicated behavior patterns and group dynamics. To gain a deeper understanding of collaboration on vertical large high resolution screens this dissertation builds on previous research and gains novel insights through new observational studies. Among other things the collected results reveal new patterns of collaborative coupling suggest that territorial behavior is less critical than shown in previous research and demonstrate that workspace awareness can also negatively affect the effectiveness of individual users.<eng>