Human-centered informatics (HCI) is a young discipline that is still defining its core components, with approaches rooted in engineering, science, and creative design. In the spirit of this book series, this book explores HCI as an intersection point for different perspectives of computing and information technology, seeking to understand how groups of designers can communicate with an increasingly diverse set of colleagues on a broadening set of problems. In so doing, this book traces the evolution of claims as a way to capture and share knowledge, particularly in comparison to other approaches like patterns and issues. Claims can be a centrally important aspect in HCI design efforts, either consciously by targeted design techniques or through ingrained habits of experienced designers. An examination of claims, their uses in design, and the possibilities for explicit use in future collaborative design endeavors seeks to inspire their further development use in HCI design. Table of Contents: What are Claims? / Knowing and Sharing / Evolution of Claims / Using Claims / Looking Forward

D. Scott McCrickard is an Associate Professor in the Department of Computer Science at Virginia Tech, and a member of Virginia Techs Center for Human Computer Interaction. His research is on the design of mobile interfaces and notification systems, toward understanding how designers capture, share, and reuse design knowledge. He has received best paper awards from the Internet Research Journal, the IFIP Interact Conference, and the Advances in Computer-Human Interactions Conference. In 1992, he received an undergraduate degree in mathematical science from the University of North Carolina, Chapel Hill. He went on to receive his M.S. and Ph.D. degrees from Georgia Tech in computer science in 1995 and 2000, respectively. His sabbatical for the 2011-2012 academic year was at the University of Colorado, Boulder, where he authored this book.