Rapid-and seemingly accelerating-changes in the economies of developed nations are having a proportional effect on the skill sets required of workers in many new jobs. Work environments are often technology-heavy, while problems are frequently ill-defined and tackled by multidisciplinary teams. This book contains insights based on research  conducted as part of a major international project supported by Cisco, Intel and Microsoft. It faces these new working environments head-on, delineating new ways of thinking about '21st-century' skills and including operational definitions of those skills. The authors focus too on fresh approaches to educational assessment, and present methodological and technological solutions to the barriers that hinder ICT-based assessments of these skills, whether in large-scale surveys or classrooms. Equally committed to defining its terms and providing practical solutions, and including international perspectives and comparative evaluations of assessment methodology and policy, this volume tackles an issue at the top of most educationalists' agendas.