Helen Couclelis is Professor of Geography at the University of California, Santa Barbara. Prior to joining the Geography Department at UC Santa Barbara in 1982, she spent several years as a professional planner and policy advisor in Greece. She has held visiting appointments at the Department of Civil Engineering of the University of Waterloo, the Institute of Urban and Regional Development of the University of California at Berkeley, and the Woodrow Wilson School of Princeton University. Her research interests are in the areas of geographic information science, urban and regional modeling and planning, integrated urban and environmental modeling, planning support systems, and spatial cognition. She is a co-editor of the journal Environment and Planning B: Planning and Design. She has co-edited A Ground for Common Search (with P. Gould and R.G. Golledge) and Geographic Information Research: Bridging the Atlantic (with M. Craglia). She has served as Associate Director of the National Center for Geographic Information and Analysis (NCGIA) and as member of the executive committee of the NSF-funded Center for Spatially Integrated Social Science (CSISS).