Professionals who use multimedia documents as a tool to communicate concepts will find this a hugely illuminating text. It provides a comprehensive and up to date account of relevant research issues, methodologies and results in the area of multimedia comprehension. More specifically, the book draws connections between cognitive research, instructional strategies and design methodologies. It includes theoretical reviews, discussions of research techniques, ad original experimental contributions. The book highlights essential aspects of current theories, and trends for future research on the use of multimedia documents.