ut spatial environments, be it real or abstract, human or machine. Research issues range from human spatial cognition to mobile robot navigation. Numerous results have been obtained: there are theoretical results about spatial knowledge representation and spatial reasoning; there are empirically gained results from psychological experiments; and there are implementations both of specialized reasoning techniques and of computational cognitive models. The SFB/TR 8 Spatial Cognition aims at integrating the diverse specialized computational solutions and results into a common framework of cognitive functions to deal with complex spatial tasks. The goal of the SFB/TR 8 is to investigate the cognitive foundations for human-centered spatial assistance systems. SFB/TR 8 Spatial Cognition: Reasoning – Action - Interaction The interdisciplinary Transregional Collaborative Research Center (Sonderforschungsbereich/Transregio) Spatial Cognition: Reasoning – Action – Interaction SFB/TR 8 is fu...